diff --git a/Telegram/SourceFiles/app.cpp b/Telegram/SourceFiles/app.cpp
index 8b5e0cbd9..eef367e92 100644
--- a/Telegram/SourceFiles/app.cpp
+++ b/Telegram/SourceFiles/app.cpp
@@ -314,9 +314,8 @@ namespace App {
 	void quit() {
 		if (quitting()) {
 			return;
-		} else if (Main::Session::Exists()
-			&& Auth().data().exportInProgress()) {
-			Auth().data().stopExportWithConfirmation([] { App::quit(); });
+		} else if (Core::IsAppLaunched()
+			&& Core::App().exportPreventsQuit()) {
 			return;
 		}
 		setLaunchState(QuitRequested);
diff --git a/Telegram/SourceFiles/boxes/auto_download_box.cpp b/Telegram/SourceFiles/boxes/auto_download_box.cpp
index 34d00a982..7ba178507 100644
--- a/Telegram/SourceFiles/boxes/auto_download_box.cpp
+++ b/Telegram/SourceFiles/boxes/auto_download_box.cpp
@@ -29,8 +29,10 @@ constexpr auto kDefaultLimit = 10 * kMegabyte;
 
 AutoDownloadBox::AutoDownloadBox(
 	QWidget*,
+	not_null<Main::Session*> session,
 	Data::AutoDownload::Source source)
-: _source(source) {
+: _session(session)
+, _source(source) {
 }
 
 void AutoDownloadBox::prepare() {
@@ -45,7 +47,7 @@ void AutoDownloadBox::setupContent() {
 
 	setTitle(tr::lng_media_auto_title());
 
-	const auto settings = &Auth().settings().autoDownload();
+	const auto settings = &_session->settings().autoDownload();
 	const auto checked = [=](Source source, Type type) {
 		return (settings->bytesLimit(source, type) > 0);
 	};
@@ -166,11 +168,11 @@ void AutoDownloadBox::setupContent() {
 			Local::writeUserSettings();
 		}
 		if (allowMoreTypes.contains(Type::Photo)) {
-			Auth().data().photoLoadSettingsChanged();
+			_session->data().photoLoadSettingsChanged();
 		}
 		if (ranges::find_if(allowMoreTypes, _1 != Type::Photo)
 			!= allowMoreTypes.end()) {
-			Auth().data().documentLoadSettingsChanged();
+			_session->data().documentLoadSettingsChanged();
 		}
 		closeBox();
 	});
diff --git a/Telegram/SourceFiles/boxes/auto_download_box.h b/Telegram/SourceFiles/boxes/auto_download_box.h
index a3485ef4e..50fefad68 100644
--- a/Telegram/SourceFiles/boxes/auto_download_box.h
+++ b/Telegram/SourceFiles/boxes/auto_download_box.h
@@ -9,6 +9,10 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 
 #include "boxes/abstract_box.h"
 
+namespace Main {
+class Session;
+} // namespace Main
+
 namespace Data {
 namespace AutoDownload {
 enum class Source;
@@ -17,7 +21,10 @@ enum class Source;
 
 class AutoDownloadBox : public BoxContent {
 public:
-	AutoDownloadBox(QWidget*, Data::AutoDownload::Source source);
+	AutoDownloadBox(
+		QWidget*,
+		not_null<Main::Session*> session,
+		Data::AutoDownload::Source source);
 
 protected:
 	void prepare() override;
@@ -25,6 +32,8 @@ protected:
 private:
 	void setupContent();
 
+	const not_null<Main::Session*> _session;
+
 	Data::AutoDownload::Source _source;
 
 };
diff --git a/Telegram/SourceFiles/boxes/auto_lock_box.cpp b/Telegram/SourceFiles/boxes/auto_lock_box.cpp
index ab4a1ccf2..61db8eb88 100644
--- a/Telegram/SourceFiles/boxes/auto_lock_box.cpp
+++ b/Telegram/SourceFiles/boxes/auto_lock_box.cpp
@@ -13,6 +13,10 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "ui/widgets/checkbox.h"
 #include "styles/style_boxes.h"
 
+AutoLockBox::AutoLockBox(QWidget*, not_null<Main::Session*> session)
+: _session(session) {
+}
+
 void AutoLockBox::prepare() {
 	setTitle(tr::lng_passcode_autolock());
 
@@ -39,6 +43,6 @@ void AutoLockBox::durationChanged(int seconds) {
 	Local::writeUserSettings();
 	Global::RefLocalPasscodeChanged().notify();
 
-	Auth().checkAutoLock();
+	_session->checkAutoLock();
 	closeBox();
 }
diff --git a/Telegram/SourceFiles/boxes/auto_lock_box.h b/Telegram/SourceFiles/boxes/auto_lock_box.h
index c0bbd8e0f..903510236 100644
--- a/Telegram/SourceFiles/boxes/auto_lock_box.h
+++ b/Telegram/SourceFiles/boxes/auto_lock_box.h
@@ -9,14 +9,17 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 
 #include "boxes/abstract_box.h"
 
+namespace Main {
+class Session;
+} // namespace Main
+
 namespace Ui {
 class Radiobutton;
 } // namespace Ui
 
 class AutoLockBox : public BoxContent {
 public:
-	AutoLockBox(QWidget*) {
-	}
+	AutoLockBox(QWidget*, not_null<Main::Session*> session);
 
 protected:
 	void prepare() override;
@@ -24,6 +27,8 @@ protected:
 private:
 	void durationChanged(int seconds);
 
+	const not_null<Main::Session*> _session;
+
 	std::vector<object_ptr<Ui::Radiobutton>> _options;
 
 };
diff --git a/Telegram/SourceFiles/boxes/background_box.cpp b/Telegram/SourceFiles/boxes/background_box.cpp
index c58b0404d..20c245e96 100644
--- a/Telegram/SourceFiles/boxes/background_box.cpp
+++ b/Telegram/SourceFiles/boxes/background_box.cpp
@@ -54,7 +54,9 @@ class BackgroundBox::Inner
 	, private MTP::Sender
 	, private base::Subscriber {
 public:
-	Inner(QWidget *parent);
+	Inner(
+		QWidget *parent,
+		not_null<Main::Session*> session);
 
 	rpl::producer<Data::WallPaper> chooseEvents() const;
 	rpl::producer<Data::WallPaper> removeRequests() const;
@@ -107,6 +109,8 @@ private:
 		int row) const;
 	void validatePaperThumbnail(const Paper &paper) const;
 
+	const not_null<Main::Session*> _session;
+
 	std::vector<Paper> _papers;
 
 	Selection _over;
@@ -118,7 +122,8 @@ private:
 
 };
 
-BackgroundBox::BackgroundBox(QWidget*) {
+BackgroundBox::BackgroundBox(QWidget*, not_null<Main::Session*> session)
+: _session(session) {
 }
 
 void BackgroundBox::prepare() {
@@ -128,11 +133,15 @@ void BackgroundBox::prepare() {
 
 	setDimensions(st::boxWideWidth, st::boxMaxListHeight);
 
-	_inner = setInnerWidget(object_ptr<Inner>(this), st::backgroundScroll);
+	_inner = setInnerWidget(
+		object_ptr<Inner>(this, _session),
+		st::backgroundScroll);
 
 	_inner->chooseEvents(
-	) | rpl::start_with_next([](const Data::WallPaper &paper) {
-		Ui::show(Box<BackgroundPreviewBox>(paper), LayerOption::KeepOther);
+	) | rpl::start_with_next([=](const Data::WallPaper &paper) {
+		Ui::show(
+			Box<BackgroundPreviewBox>(_session, paper),
+			LayerOption::KeepOther);
 	}, _inner->lifetime());
 
 	_inner->removeRequests(
@@ -143,6 +152,7 @@ void BackgroundBox::prepare() {
 
 void BackgroundBox::removePaper(const Data::WallPaper &paper) {
 	const auto box = std::make_shared<QPointer<BoxContent>>();
+	const auto session = _session;
 	const auto remove = [=, weak = make_weak(this)]{
 		if (*box) {
 			(*box)->closeBox();
@@ -150,8 +160,8 @@ void BackgroundBox::removePaper(const Data::WallPaper &paper) {
 		if (weak) {
 			weak->_inner->removePaper(paper);
 		}
-		Auth().data().removeWallpaper(paper);
-		Auth().api().request(MTPaccount_SaveWallPaper(
+		session->data().removeWallpaper(paper);
+		session->api().request(MTPaccount_SaveWallPaper(
 			paper.mtpInput(),
 			MTP_bool(true),
 			paper.mtpSettings()
@@ -166,17 +176,21 @@ void BackgroundBox::removePaper(const Data::WallPaper &paper) {
 		LayerOption::KeepOther);
 }
 
-BackgroundBox::Inner::Inner(QWidget *parent) : RpWidget(parent)
+BackgroundBox::Inner::Inner(
+	QWidget *parent,
+	not_null<Main::Session*> session)
+: RpWidget(parent)
+, _session(session)
 , _check(std::make_unique<Ui::RoundCheckbox>(st::overviewCheck, [=] { update(); })) {
 	_check->setChecked(true, Ui::RoundCheckbox::SetStyle::Fast);
-	if (Auth().data().wallpapers().empty()) {
+	if (_session->data().wallpapers().empty()) {
 		resize(st::boxWideWidth, 2 * (st::backgroundSize.height() + st::backgroundPadding) + st::backgroundPadding);
 	} else {
 		updatePapers();
 	}
 	requestPapers();
 
-	subscribe(Auth().downloaderTaskFinished(), [=] { update(); });
+	subscribe(_session->downloaderTaskFinished(), [=] { update(); });
 	using Update = Window::Theme::BackgroundUpdate;
 	subscribe(Window::Theme::Background(), [=](const Update &update) {
 		if (update.paletteChanged()) {
@@ -192,9 +206,9 @@ BackgroundBox::Inner::Inner(QWidget *parent) : RpWidget(parent)
 
 void BackgroundBox::Inner::requestPapers() {
 	request(MTPaccount_GetWallPapers(
-		MTP_int(Auth().data().wallpapersHash())
+		MTP_int(_session->data().wallpapersHash())
 	)).done([=](const MTPaccount_WallPapers &result) {
-		if (Auth().data().updateWallpapers(result)) {
+		if (_session->data().updateWallpapers(result)) {
 			updatePapers();
 		}
 	}).send();
@@ -220,7 +234,7 @@ void BackgroundBox::Inner::sortPapers() {
 void BackgroundBox::Inner::updatePapers() {
 	_over = _overDown = Selection();
 
-	_papers = Auth().data().wallpapers(
+	_papers = _session->data().wallpapers(
 	) | ranges::view::filter([](const Data::WallPaper &paper) {
 		return !paper.isPattern() || paper.backgroundColor().has_value();
 	}) | ranges::view::transform([](const Data::WallPaper &paper) {
diff --git a/Telegram/SourceFiles/boxes/background_box.h b/Telegram/SourceFiles/boxes/background_box.h
index 6cc597168..4dbfae467 100644
--- a/Telegram/SourceFiles/boxes/background_box.h
+++ b/Telegram/SourceFiles/boxes/background_box.h
@@ -9,13 +9,17 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 
 #include "boxes/abstract_box.h"
 
+namespace Main {
+class Session;
+} // namespace Main
+
 namespace Data {
 class WallPaper;
 } // namespace Data
 
 class BackgroundBox : public BoxContent {
 public:
-	BackgroundBox(QWidget*);
+	BackgroundBox(QWidget*, not_null<Main::Session*> session);
 
 protected:
 	void prepare() override;
@@ -25,6 +29,8 @@ private:
 
 	void removePaper(const Data::WallPaper &paper);
 
+	const not_null<Main::Session*> _session;
+
 	QPointer<Inner> _inner;
 
 };
diff --git a/Telegram/SourceFiles/boxes/background_preview_box.cpp b/Telegram/SourceFiles/boxes/background_preview_box.cpp
index eaebe3c29..a389af557 100644
--- a/Telegram/SourceFiles/boxes/background_preview_box.cpp
+++ b/Telegram/SourceFiles/boxes/background_preview_box.cpp
@@ -387,20 +387,24 @@ QImage PrepareScaledFromFull(
 
 BackgroundPreviewBox::BackgroundPreviewBox(
 	QWidget*,
+	not_null<Main::Session*> session,
 	const Data::WallPaper &paper)
-: _text1(GenerateTextItem(
+: _session(session)
+, _text1(GenerateTextItem(
 	delegate(),
-	Auth().data().history(peerFromUser(PeerData::kServiceNotificationsId)),
+	_session->data().history(
+		peerFromUser(PeerData::kServiceNotificationsId)),
 	tr::lng_background_text1(tr::now),
 	false))
 , _text2(GenerateTextItem(
 	delegate(),
-	Auth().data().history(peerFromUser(PeerData::kServiceNotificationsId)),
+	_session->data().history(
+		peerFromUser(PeerData::kServiceNotificationsId)),
 	tr::lng_background_text2(tr::now),
 	true))
 , _paper(paper)
 , _radial([=](crl::time now) { radialAnimationCallback(now); }) {
-	subscribe(Auth().downloaderTaskFinished(), [=] { update(); });
+	subscribe(_session->downloaderTaskFinished(), [=] { update(); });
 }
 
 not_null<HistoryView::ElementDelegate*> BackgroundPreviewBox::delegate() {
@@ -483,7 +487,7 @@ void BackgroundPreviewBox::apply() {
 		&& Data::IsCloudWallPaper(_paper);
 	App::main()->setChatBackground(_paper, std::move(_full));
 	if (install) {
-		Auth().api().request(MTPaccount_InstallWallPaper(
+		_session->api().request(MTPaccount_InstallWallPaper(
 			_paper.mtpInput(),
 			_paper.mtpSettings()
 		)).send();
@@ -736,18 +740,23 @@ void BackgroundPreviewBox::checkLoadedDocument() {
 }
 
 bool BackgroundPreviewBox::Start(
+		not_null<Main::Session*> session,
 		const QString &slug,
 		const QMap<QString, QString> &params) {
 	if (const auto paper = Data::WallPaper::FromColorSlug(slug)) {
-		Ui::show(Box<BackgroundPreviewBox>(paper->withUrlParams(params)));
+		Ui::show(Box<BackgroundPreviewBox>(
+			session,
+			paper->withUrlParams(params)));
 		return true;
 	}
 	if (!IsValidWallPaperSlug(slug)) {
 		Ui::show(Box<InformBox>(tr::lng_background_bad_link(tr::now)));
 		return false;
 	}
-	Auth().api().requestWallPaper(slug, [=](const Data::WallPaper &result) {
-		Ui::show(Box<BackgroundPreviewBox>(result.withUrlParams(params)));
+	session->api().requestWallPaper(slug, [=](const Data::WallPaper &result) {
+		Ui::show(Box<BackgroundPreviewBox>(
+			session,
+			result.withUrlParams(params)));
 	}, [](const RPCError &error) {
 		Ui::show(Box<InformBox>(tr::lng_background_bad_link(tr::now)));
 	});
diff --git a/Telegram/SourceFiles/boxes/background_preview_box.h b/Telegram/SourceFiles/boxes/background_preview_box.h
index 3d7cbb2df..6d97e2f18 100644
--- a/Telegram/SourceFiles/boxes/background_preview_box.h
+++ b/Telegram/SourceFiles/boxes/background_preview_box.h
@@ -15,6 +15,10 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "ui/effects/animations.h"
 #include "ui/effects/radial_animation.h"
 
+namespace Main {
+class Session;
+} // namespace Main
+
 namespace Ui {
 class Checkbox;
 } // namespace Ui
@@ -23,9 +27,13 @@ class BackgroundPreviewBox
 	: public BoxContent
 	, private HistoryView::SimpleElementDelegate {
 public:
-	BackgroundPreviewBox(QWidget*, const Data::WallPaper &paper);
+	BackgroundPreviewBox(
+		QWidget*,
+		not_null<Main::Session*> session,
+		const Data::WallPaper &paper);
 
 	static bool Start(
+		not_null<Main::Session*> session,
 		const QString &slug,
 		const QMap<QString, QString> &params);
 
@@ -58,6 +66,7 @@ private:
 	void startFadeInFrom(QPixmap previous);
 	void checkBlurAnimationStart();
 
+	const not_null<Main::Session*> _session;
 	AdminLog::OwnedItem _text1;
 	AdminLog::OwnedItem _text2;
 	Data::WallPaper _paper;
diff --git a/Telegram/SourceFiles/boxes/change_phone_box.cpp b/Telegram/SourceFiles/boxes/change_phone_box.cpp
index 919b54f46..8b30c7b19 100644
--- a/Telegram/SourceFiles/boxes/change_phone_box.cpp
+++ b/Telegram/SourceFiles/boxes/change_phone_box.cpp
@@ -60,8 +60,7 @@ void createErrorLabel(
 
 class ChangePhoneBox::EnterPhone : public BoxContent {
 public:
-	EnterPhone(QWidget*) {
-	}
+	EnterPhone(QWidget*, not_null<Main::Session*> session);
 
 	void setInnerFocus() override {
 		_phone->setFocusFast();
@@ -79,6 +78,7 @@ private:
 		showError(QString());
 	}
 
+	const not_null<Main::Session*> _session;
 	object_ptr<Ui::PhoneInput> _phone = { nullptr };
 	object_ptr<Ui::FadeWrap<Ui::FlatLabel>> _error = { nullptr };
 	mtpRequestId _requestId = 0;
@@ -87,7 +87,13 @@ private:
 
 class ChangePhoneBox::EnterCode : public BoxContent {
 public:
-	EnterCode(QWidget*, const QString &phone, const QString &hash, int codeLength, int callTimeout);
+	EnterCode(
+		QWidget*,
+		not_null<Main::Session*> session,
+		const QString &phone,
+		const QString &hash,
+		int codeLength,
+		int callTimeout);
 
 	void setInnerFocus() override {
 		_code->setFocusFast();
@@ -107,6 +113,8 @@ private:
 	}
 	int countHeight();
 
+	const not_null<Main::Session*> _session;
+
 	QString _phone;
 	QString _hash;
 	int _codeLength = 0;
@@ -119,6 +127,12 @@ private:
 
 };
 
+ChangePhoneBox::EnterPhone::EnterPhone(
+	QWidget*,
+	not_null<Main::Session*> session)
+: _session(session) {
+}
+
 void ChangePhoneBox::EnterPhone::prepare() {
 	setTitle(tr::lng_change_phone_title());
 
@@ -188,6 +202,7 @@ void ChangePhoneBox::EnterPhone::sendPhoneDone(const QString &phoneNumber, const
 	}
 	Ui::show(
 		Box<EnterCode>(
+			_session,
 			phoneNumber,
 			phoneCodeHash,
 			codeLength,
@@ -229,8 +244,15 @@ void ChangePhoneBox::EnterPhone::showError(const QString &text) {
 	}
 }
 
-ChangePhoneBox::EnterCode::EnterCode(QWidget*, const QString &phone, const QString &hash, int codeLength, int callTimeout)
-: _phone(phone)
+ChangePhoneBox::EnterCode::EnterCode(
+	QWidget*,
+	not_null<Main::Session*> session,
+	const QString &phone,
+	const QString &hash,
+	int codeLength,
+	int callTimeout)
+: _session(session)
+, _phone(phone)
 , _hash(hash)
 , _codeLength(codeLength)
 , _callTimeout(callTimeout)
@@ -279,13 +301,15 @@ void ChangePhoneBox::EnterCode::submit() {
 	}
 	hideError();
 
+	const auto session = _session;
 	const auto code = _code->getDigitsOnly();
+	const auto weak = make_weak(this);
 	_requestId = MTP::send(MTPaccount_ChangePhone(
 		MTP_string(_phone),
 		MTP_string(_hash),
 		MTP_string(code)
-	), rpcDone([weak = make_weak(this)](const MTPUser &result) {
-		Auth().data().processUser(result);
+	), rpcDone([=](const MTPUser &result) {
+		session->data().processUser(result);
 		if (weak) {
 			Ui::hideLayer();
 		}
@@ -342,11 +366,17 @@ bool ChangePhoneBox::EnterCode::sendCodeFail(const RPCError &error) {
 	return true;
 }
 
+ChangePhoneBox::ChangePhoneBox(QWidget*, not_null<Main::Session*> session)
+: _session(session) {
+}
+
 void ChangePhoneBox::prepare() {
+	const auto session = _session;
+
 	setTitle(tr::lng_change_phone_title());
-	addButton(tr::lng_change_phone_button(), [] {
-		Ui::show(Box<ConfirmBox>(tr::lng_change_phone_warning(tr::now), [] {
-			Ui::show(Box<EnterPhone>());
+	addButton(tr::lng_change_phone_button(), [=] {
+		Ui::show(Box<ConfirmBox>(tr::lng_change_phone_warning(tr::now), [=] {
+			Ui::show(Box<EnterPhone>(session));
 		}));
 	});
 	addButton(tr::lng_cancel(), [this] {
diff --git a/Telegram/SourceFiles/boxes/change_phone_box.h b/Telegram/SourceFiles/boxes/change_phone_box.h
index ee9383c97..9eb6a8479 100644
--- a/Telegram/SourceFiles/boxes/change_phone_box.h
+++ b/Telegram/SourceFiles/boxes/change_phone_box.h
@@ -9,10 +9,13 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 
 #include "boxes/abstract_box.h"
 
+namespace Main {
+class Session;
+} // namespace Main
+
 class ChangePhoneBox : public BoxContent {
 public:
-	ChangePhoneBox(QWidget*) {
-	}
+	ChangePhoneBox(QWidget*, not_null<Main::Session*> session);
 
 protected:
 	void prepare() override;
@@ -23,5 +26,7 @@ private:
 	class EnterPhone;
 	class EnterCode;
 
+	const not_null<Main::Session*> _session;
+
 };
 
diff --git a/Telegram/SourceFiles/boxes/confirm_box.cpp b/Telegram/SourceFiles/boxes/confirm_box.cpp
index 4f2b6942d..3d79848cb 100644
--- a/Telegram/SourceFiles/boxes/confirm_box.cpp
+++ b/Telegram/SourceFiles/boxes/confirm_box.cpp
@@ -459,7 +459,8 @@ DeleteMessagesBox::DeleteMessagesBox(
 	QWidget*,
 	not_null<HistoryItem*> item,
 	bool suggestModerateActions)
-: _ids(1, item->fullId()) {
+: _session(&item->history()->session())
+, _ids(1, item->fullId()) {
 	if (suggestModerateActions) {
 		_moderateBan = item->suggestBanReport();
 		_moderateDeleteAll = item->suggestDeleteAllReport();
@@ -472,8 +473,10 @@ DeleteMessagesBox::DeleteMessagesBox(
 
 DeleteMessagesBox::DeleteMessagesBox(
 	QWidget*,
+	not_null<Main::Session*> session,
 	MessageIdsList &&selected)
-: _ids(std::move(selected)) {
+: _session(session)
+, _ids(std::move(selected)) {
 	Expects(!_ids.empty());
 }
 
@@ -481,7 +484,8 @@ DeleteMessagesBox::DeleteMessagesBox(
 	QWidget*,
 	not_null<PeerData*> peer,
 	bool justClear)
-: _wipeHistoryPeer(peer)
+: _session(&peer->session())
+, _wipeHistoryPeer(peer)
 , _wipeHistoryJustClear(justClear) {
 }
 
@@ -579,7 +583,7 @@ void DeleteMessagesBox::prepare() {
 PeerData *DeleteMessagesBox::checkFromSinglePeer() const {
 	auto result = (PeerData*)nullptr;
 	for (const auto fullId : std::as_const(_ids)) {
-		if (const auto item = Auth().data().message(fullId)) {
+		if (const auto item = _session->data().message(fullId)) {
 			const auto peer = item->history()->peer;
 			if (!result) {
 				result = peer;
@@ -762,7 +766,7 @@ void DeleteMessagesBox::deleteAndClear() {
 
 	base::flat_map<not_null<PeerData*>, QVector<MTPint>> idsByPeer;
 	for (const auto itemId : _ids) {
-		if (const auto item = Auth().data().message(itemId)) {
+		if (const auto item = _session->data().message(itemId)) {
 			const auto history = item->history();
 			const auto wasOnServer = IsServerMsgId(item->id);
 			const auto wasLast = (history->lastMessage() == item);
@@ -780,18 +784,21 @@ void DeleteMessagesBox::deleteAndClear() {
 	for (const auto &[peer, ids] : idsByPeer) {
 		peer->session().api().deleteMessages(peer, ids, revoke);
 	}
+	const auto session = _session;
 	Ui::hideLayer();
-	Auth().data().sendHistoryChangeNotifications();
+	session->data().sendHistoryChangeNotifications();
 }
 
 ConfirmInviteBox::ConfirmInviteBox(
 	QWidget*,
+	not_null<Main::Session*> session,
 	const MTPDchatInvite &data,
 	Fn<void()> submit)
-: _submit(std::move(submit))
+: _session(session)
+, _submit(std::move(submit))
 , _title(this, st::confirmInviteTitle)
 , _status(this, st::confirmInviteStatus)
-, _participants(GetParticipants(data))
+, _participants(GetParticipants(_session, data))
 , _isChannel(data.is_channel() && !data.is_megagroup()) {
 	const auto title = qs(data.vtitle());
 	const auto count = data.vparticipants_count().v;
@@ -807,11 +814,11 @@ ConfirmInviteBox::ConfirmInviteBox(
 	_title->setText(title);
 	_status->setText(status);
 
-	const auto photo = Auth().data().processPhoto(data.vphoto());
+	const auto photo = _session->data().processPhoto(data.vphoto());
 	if (!photo->isNull()) {
 		_photo = photo->thumbnail();
 		if (!_photo->loaded()) {
-			subscribe(Auth().downloaderTaskFinished(), [=] {
+			subscribe(_session->downloaderTaskFinished(), [=] {
 				update();
 			});
 			_photo->load(Data::FileOrigin());
@@ -824,6 +831,7 @@ ConfirmInviteBox::ConfirmInviteBox(
 }
 
 std::vector<not_null<UserData*>> ConfirmInviteBox::GetParticipants(
+		not_null<Main::Session*> session,
 		const MTPDchatInvite &data) {
 	const auto participants = data.vparticipants();
 	if (!participants) {
@@ -833,7 +841,7 @@ std::vector<not_null<UserData*>> ConfirmInviteBox::GetParticipants(
 	auto result = std::vector<not_null<UserData*>>();
 	result.reserve(v.size());
 	for (const auto &participant : v) {
-		if (const auto user = Auth().data().processUser(participant)) {
+		if (const auto user = session->data().processUser(participant)) {
 			result.push_back(user);
 		}
 	}
diff --git a/Telegram/SourceFiles/boxes/confirm_box.h b/Telegram/SourceFiles/boxes/confirm_box.h
index afaa94037..e1fe14314 100644
--- a/Telegram/SourceFiles/boxes/confirm_box.h
+++ b/Telegram/SourceFiles/boxes/confirm_box.h
@@ -9,6 +9,10 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 
 #include "boxes/abstract_box.h"
 
+namespace Main {
+class Session;
+} // namespace Main
+
 namespace Ui {
 class Checkbox;
 class FlatLabel;
@@ -150,7 +154,10 @@ public:
 		QWidget*,
 		not_null<HistoryItem*> item,
 		bool suggestModerateActions);
-	DeleteMessagesBox(QWidget*, MessageIdsList &&selected);
+	DeleteMessagesBox(
+		QWidget*,
+		not_null<Main::Session*> session,
+		MessageIdsList &&selected);
 	DeleteMessagesBox(QWidget*, not_null<PeerData*> peer, bool justClear);
 
 	void setDeleteConfirmedCallback(Fn<void()> callback) {
@@ -172,6 +179,8 @@ private:
 	PeerData *checkFromSinglePeer() const;
 	std::optional<RevokeConfig> revokeText(not_null<PeerData*> peer) const;
 
+	const not_null<Main::Session*> _session;
+
 	PeerData * const _wipeHistoryPeer = nullptr;
 	const bool _wipeHistoryJustClear = false;
 	const MessageIdsList _ids;
@@ -194,6 +203,7 @@ class ConfirmInviteBox : public BoxContent, public RPCSender {
 public:
 	ConfirmInviteBox(
 		QWidget*,
+		not_null<Main::Session*> session,
 		const MTPDchatInvite &data,
 		Fn<void()> submit);
 	~ConfirmInviteBox();
@@ -206,8 +216,11 @@ protected:
 
 private:
 	static std::vector<not_null<UserData*>> GetParticipants(
+		not_null<Main::Session*> session,
 		const MTPDchatInvite &data);
 
+	const not_null<Main::Session*> _session;
+
 	Fn<void()> _submit;
 	object_ptr<Ui::FlatLabel> _title;
 	object_ptr<Ui::FlatLabel> _status;
diff --git a/Telegram/SourceFiles/boxes/edit_caption_box.cpp b/Telegram/SourceFiles/boxes/edit_caption_box.cpp
index 8839d86bf..3a4086721 100644
--- a/Telegram/SourceFiles/boxes/edit_caption_box.cpp
+++ b/Telegram/SourceFiles/boxes/edit_caption_box.cpp
@@ -232,7 +232,7 @@ EditCaptionBox::EditCaptionBox(
 	_thumbnailImageLoaded = _thumbnailImage
 		? _thumbnailImage->loaded()
 		: true;
-	subscribe(Auth().downloaderTaskFinished(), [=] {
+	subscribe(_controller->session().downloaderTaskFinished(), [=] {
 		if (!_thumbnailImageLoaded
 			&& _thumbnailImage
 			&& _thumbnailImage->loaded()) {
@@ -876,7 +876,7 @@ void EditCaptionBox::setInnerFocus() {
 void EditCaptionBox::save() {
 	if (_saveRequestId) return;
 
-	const auto item = Auth().data().message(_msgId);
+	const auto item = _controller->session().data().message(_msgId);
 	if (!item) {
 		_error = tr::lng_edit_deleted(tr::now);
 		update();
@@ -894,7 +894,7 @@ void EditCaptionBox::save() {
 	};
 	const auto prepareFlags = Ui::ItemTextOptions(
 		item->history(),
-		Auth().user()).flags;
+		_controller->session().user()).flags;
 	TextUtilities::PrepareForSending(sending, prepareFlags);
 	TextUtilities::Trim(sending);
 
@@ -913,7 +913,7 @@ void EditCaptionBox::save() {
 		};
 		item->setText(sending);
 
-		Auth().api().editMedia(
+		_controller->session().api().editMedia(
 			std::move(_preparedList),
 			(!_asFile && _photo) ? SendMediaType::Photo : SendMediaType::File,
 			_field->getTextWithAppliedMarkdown(),
@@ -938,21 +938,24 @@ void EditCaptionBox::save() {
 
 void EditCaptionBox::saveDone(const MTPUpdates &updates) {
 	_saveRequestId = 0;
+	const auto controller = _controller;
 	closeBox();
-	Auth().api().applyUpdates(updates);
+	controller->session().api().applyUpdates(updates);
 }
 
 bool EditCaptionBox::saveFail(const RPCError &error) {
 	if (MTP::isDefaultHandledError(error)) return false;
 
 	_saveRequestId = 0;
-	QString err = error.type();
-	if (err == qstr("MESSAGE_ID_INVALID") || err == qstr("CHAT_ADMIN_REQUIRED") || err == qstr("MESSAGE_EDIT_TIME_EXPIRED")) {
+	const auto &type = error.type();
+	if (type == qstr("MESSAGE_ID_INVALID")
+		|| type == qstr("CHAT_ADMIN_REQUIRED")
+		|| type == qstr("MESSAGE_EDIT_TIME_EXPIRED")) {
 		_error = tr::lng_edit_error(tr::now);
-	} else if (err == qstr("MESSAGE_NOT_MODIFIED")) {
+	} else if (type == qstr("MESSAGE_NOT_MODIFIED")) {
 		closeBox();
 		return true;
-	} else if (err == qstr("MESSAGE_EMPTY")) {
+	} else if (type == qstr("MESSAGE_EMPTY")) {
 		_field->setFocus();
 		_field->showError();
 	} else {
diff --git a/Telegram/SourceFiles/boxes/edit_privacy_box.cpp b/Telegram/SourceFiles/boxes/edit_privacy_box.cpp
index 6a9baec1e..ed6152957 100644
--- a/Telegram/SourceFiles/boxes/edit_privacy_box.cpp
+++ b/Telegram/SourceFiles/boxes/edit_privacy_box.cpp
@@ -25,6 +25,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "data/data_user.h"
 #include "data/data_chat.h"
 #include "data/data_channel.h"
+#include "window/window_session_controller.h"
 #include "styles/style_settings.h"
 #include "styles/style_boxes.h"
 
@@ -113,9 +114,11 @@ QString EditPrivacyController::optionLabel(Option option) {
 
 EditPrivacyBox::EditPrivacyBox(
 	QWidget*,
+	not_null<Window::SessionController*> window,
 	std::unique_ptr<EditPrivacyController> controller,
 	const Value &value)
-: _controller(std::move(controller))
+: _window(window)
+, _controller(std::move(controller))
 , _value(value) {
 }
 
@@ -350,7 +353,7 @@ void EditPrivacyBox::setupContent() {
 	addLabel(content, _controller->exceptionsDescription());
 	AddSkip(content);
 
-	if (auto below = _controller->setupBelowWidget(content)) {
+	if (auto below = _controller->setupBelowWidget(_window, content)) {
 		content->add(std::move(below));
 	}
 
@@ -358,7 +361,7 @@ void EditPrivacyBox::setupContent() {
 		const auto someAreDisallowed = (_value.option != Option::Everyone)
 			|| !_value.never.empty();
 		_controller->confirmSave(someAreDisallowed, crl::guard(this, [=] {
-			Auth().api().savePrivacy(
+			_window->session().api().savePrivacy(
 				_controller->apiKey(),
 				collectResult());
 			closeBox();
diff --git a/Telegram/SourceFiles/boxes/edit_privacy_box.h b/Telegram/SourceFiles/boxes/edit_privacy_box.h
index 1096d5f81..29110f2cf 100644
--- a/Telegram/SourceFiles/boxes/edit_privacy_box.h
+++ b/Telegram/SourceFiles/boxes/edit_privacy_box.h
@@ -59,6 +59,7 @@ public:
 		return { nullptr };
 	}
 	[[nodiscard]] virtual object_ptr<Ui::RpWidget> setupBelowWidget(
+			not_null<Window::SessionController*> controller,
 			not_null<QWidget*> parent) {
 		return { nullptr };
 	}
@@ -95,6 +96,7 @@ public:
 
 	EditPrivacyBox(
 		QWidget*,
+		not_null<Window::SessionController*> window,
 		std::unique_ptr<EditPrivacyController> controller,
 		const Value &value);
 
@@ -117,6 +119,7 @@ private:
 	void editExceptions(Exception exception, Fn<void()> done);
 	std::vector<not_null<PeerData*>> &exceptions(Exception exception);
 
+	const not_null<Window::SessionController*> _window;
 	std::unique_ptr<EditPrivacyController> _controller;
 	Value _value;
 
diff --git a/Telegram/SourceFiles/boxes/local_storage_box.cpp b/Telegram/SourceFiles/boxes/local_storage_box.cpp
index 7614a0c4c..047dcc2cb 100644
--- a/Telegram/SourceFiles/boxes/local_storage_box.cpp
+++ b/Telegram/SourceFiles/boxes/local_storage_box.cpp
@@ -265,11 +265,11 @@ QString LocalStorageBox::Row::sizeText(const Database::TaggedSummary &data) cons
 
 LocalStorageBox::LocalStorageBox(
 	QWidget*,
-	not_null<Database*> db,
-	not_null<Database*> dbBig,
+	not_null<Main::Session*> session,
 	CreateTag)
-: _db(db)
-, _dbBig(dbBig) {
+: _session(session)
+, _db(&session->data().cache())
+, _dbBig(&session->data().cacheBigFile()) {
 	const auto &settings = Local::cacheSettings();
 	const auto &settingsBig = Local::cacheBigFileSettings();
 	_totalSizeLimit = settings.totalSizeLimit + settingsBig.totalSizeLimit;
@@ -277,15 +277,13 @@ LocalStorageBox::LocalStorageBox(
 	_timeLimit = settings.totalTimeLimit;
 }
 
-void LocalStorageBox::Show(
-		not_null<Database*> db,
-		not_null<Database*> dbBig) {
+void LocalStorageBox::Show(not_null<::Main::Session*> session) {
 	auto shared = std::make_shared<object_ptr<LocalStorageBox>>(
-		Box<LocalStorageBox>(db, dbBig, CreateTag()));
+		Box<LocalStorageBox>(session, CreateTag()));
 	const auto weak = shared->data();
 	rpl::combine(
-		db->statsOnMain(),
-		dbBig->statsOnMain()
+		session->data().cache().statsOnMain(),
+		session->data().cacheBigFile().statsOnMain()
 	) | rpl::start_with_next([=](
 			Database::Stats &&stats,
 			Database::Stats &&statsBig) {
@@ -592,7 +590,7 @@ void LocalStorageBox::save() {
 	updateBig.totalSizeLimit = _mediaSizeLimit;
 	updateBig.totalTimeLimit = _timeLimit;
 	Local::updateCacheSettings(update, updateBig);
-	Auth().data().cache().updateSettings(update);
+	_session->data().cache().updateSettings(update);
 	closeBox();
 }
 
diff --git a/Telegram/SourceFiles/boxes/local_storage_box.h b/Telegram/SourceFiles/boxes/local_storage_box.h
index 5a9bc4e30..f00d83958 100644
--- a/Telegram/SourceFiles/boxes/local_storage_box.h
+++ b/Telegram/SourceFiles/boxes/local_storage_box.h
@@ -10,6 +10,10 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "boxes/abstract_box.h"
 #include "storage/cache/storage_cache_database.h"
 
+namespace Main {
+class Session;
+} // namespace Main
+
 namespace Storage {
 namespace Cache {
 class Database;
@@ -33,11 +37,10 @@ public:
 
 	LocalStorageBox(
 		QWidget*,
-		not_null<Database*> db,
-		not_null<Database*> dbBig,
+		not_null<Main::Session*> session,
 		CreateTag);
 
-	static void Show(not_null<Database*> db, not_null<Database*> dbBig);
+	static void Show(not_null<Main::Session*> session);
 
 protected:
 	void prepare() override;
@@ -80,8 +83,10 @@ private:
 		Value currentValue,
 		Callback &&callback);
 
-	not_null<Storage::Cache::Database*> _db;
-	not_null<Storage::Cache::Database*> _dbBig;
+	const not_null<Main::Session*> _session;
+	const not_null<Storage::Cache::Database*> _db;
+	const not_null<Storage::Cache::Database*> _dbBig;
+
 	Database::Stats _stats;
 	Database::Stats _statsBig;
 
diff --git a/Telegram/SourceFiles/boxes/mute_settings_box.cpp b/Telegram/SourceFiles/boxes/mute_settings_box.cpp
index d809afe17..996d424a2 100644
--- a/Telegram/SourceFiles/boxes/mute_settings_box.cpp
+++ b/Telegram/SourceFiles/boxes/mute_settings_box.cpp
@@ -10,6 +10,7 @@ Copyright (C) 2017, Nicholas Guriev <guriev-ns@ya.ru>
 #include "lang/lang_keys.h"
 #include "main/main_session.h"
 #include "data/data_session.h"
+#include "data/data_peer.h"
 #include "styles/style_boxes.h"
 #include "ui/special_buttons.h"
 #include "ui/widgets/checkbox.h"
@@ -73,7 +74,7 @@ void MuteSettingsBox::prepare() {
 
 	_save = [=] {
 		const auto muteForSeconds = group->value() * 3600;
-		Auth().data().updateNotifySettings(
+		_peer->session().data().updateNotifySettings(
 			_peer,
 			muteForSeconds);
 		closeBox();
diff --git a/Telegram/SourceFiles/boxes/passcode_box.cpp b/Telegram/SourceFiles/boxes/passcode_box.cpp
index 05cfa92ef..a8a0b19f2 100644
--- a/Telegram/SourceFiles/boxes/passcode_box.cpp
+++ b/Telegram/SourceFiles/boxes/passcode_box.cpp
@@ -40,8 +40,12 @@ PasscodeBox::CloudFields PasscodeBox::CloudFields::From(
 	return result;
 }
 
-PasscodeBox::PasscodeBox(QWidget*, bool turningOff)
-: _turningOff(turningOff)
+PasscodeBox::PasscodeBox(
+	QWidget*,
+	not_null<Main::Session*> session,
+	bool turningOff)
+: _session(session)
+, _turningOff(turningOff)
 , _about(st::boxWidth - st::boxPadding.left() * 1.5)
 , _oldPasscode(this, st::defaultInputField, tr::lng_passcode_enter_old())
 , _newPasscode(this, st::defaultInputField, Global::LocalPasscode() ? tr::lng_passcode_enter_new() : tr::lng_passcode_enter_first())
@@ -51,8 +55,12 @@ PasscodeBox::PasscodeBox(QWidget*, bool turningOff)
 , _recover(this, tr::lng_signin_recover(tr::now)) {
 }
 
-PasscodeBox::PasscodeBox(QWidget*, const CloudFields &fields)
-: _turningOff(fields.turningOff)
+PasscodeBox::PasscodeBox(
+	QWidget*,
+	not_null<Main::Session*> session,
+	const CloudFields &fields)
+: _session(session)
+, _turningOff(fields.turningOff)
 , _cloudPwd(true)
 , _cloudFields(fields)
 , _about(st::boxWidth - st::boxPadding.left() * 1.5)
@@ -506,7 +514,7 @@ void PasscodeBox::save(bool force) {
 		const auto weak = make_weak(this);
 		cSetPasscodeBadTries(0);
 		Local::setPasscode(pwd.toUtf8());
-		Auth().localPasscodeChanged();
+		_session->localPasscodeChanged();
 		if (weak) {
 			closeBox();
 		}
diff --git a/Telegram/SourceFiles/boxes/passcode_box.h b/Telegram/SourceFiles/boxes/passcode_box.h
index 8b9dbdf05..7c907d523 100644
--- a/Telegram/SourceFiles/boxes/passcode_box.h
+++ b/Telegram/SourceFiles/boxes/passcode_box.h
@@ -11,6 +11,10 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "mtproto/sender.h"
 #include "core/core_cloud_password.h"
 
+namespace Main {
+class Session;
+} // namespace Main
+
 namespace Ui {
 class InputField;
 class PasswordInput;
@@ -23,7 +27,7 @@ struct CloudPasswordState;
 
 class PasscodeBox : public BoxContent, private MTP::Sender {
 public:
-	PasscodeBox(QWidget*, bool turningOff);
+	PasscodeBox(QWidget*, not_null<Main::Session*> session, bool turningOff);
 
 	struct CloudFields {
 		static CloudFields From(const Core::CloudPasswordState &current);
@@ -42,7 +46,10 @@ public:
 		std::optional<QString> customDescription;
 		rpl::producer<QString> customSubmitButton;
 	};
-	PasscodeBox(QWidget*, const CloudFields &fields);
+	PasscodeBox(
+		QWidget*,
+		not_null<Main::Session*> session,
+		const CloudFields &fields);
 
 	rpl::producer<QByteArray> newPasswordSet() const;
 	rpl::producer<> passwordReloadNeeded() const;
@@ -122,6 +129,8 @@ private:
 	void passwordChecked();
 	void serverError();
 
+	const not_null<Main::Session*> _session;
+
 	QString _pattern;
 
 	QPointer<BoxContent> _replacedBy;
diff --git a/Telegram/SourceFiles/boxes/peers/edit_participant_box.cpp b/Telegram/SourceFiles/boxes/peers/edit_participant_box.cpp
index 851629750..3809c0d73 100644
--- a/Telegram/SourceFiles/boxes/peers/edit_participant_box.cpp
+++ b/Telegram/SourceFiles/boxes/peers/edit_participant_box.cpp
@@ -57,7 +57,7 @@ void SetCloudPassword(not_null<GenericBox*> box, not_null<UserData*> user) {
 	) | rpl::start_with_next([=] {
 		using namespace Settings;
 		const auto weak = make_weak(box);
-		if (CheckEditCloudPassword()) {
+		if (CheckEditCloudPassword(&user->session())) {
 			box->getDelegate()->show(
 				EditCloudPasswordBox(&user->session()));
 		} else {
@@ -566,7 +566,9 @@ void EditAdminBox::requestTransferPassword(not_null<ChannelData*> channel) {
 				const Core::CloudPasswordResult &result) {
 			sendTransferRequestFrom(*box, channel, result);
 		});
-		*box = getDelegate()->show(Box<PasscodeBox>(fields));
+		*box = getDelegate()->show(Box<PasscodeBox>(
+			&channel->session(),
+			fields));
 	}, lifetime());
 }
 
diff --git a/Telegram/SourceFiles/core/application.cpp b/Telegram/SourceFiles/core/application.cpp
index c91dd5f04..f12b4fb00 100644
--- a/Telegram/SourceFiles/core/application.cpp
+++ b/Telegram/SourceFiles/core/application.cpp
@@ -480,6 +480,17 @@ void Application::writeInstallBetaVersionsSetting() {
 	_launcher->writeInstallBetaVersionsSetting();
 }
 
+bool Application::exportPreventsQuit() {
+	if (!activeAccount().sessionExists()
+		|| !activeAccount().session().data().exportInProgress()) {
+		return false;
+	}
+	activeAccount().session().data().stopExportWithConfirmation([] {
+		App::quit();
+	});
+	return true;
+}
+
 int Application::unreadBadge() const {
 	return activeAccount().sessionExists()
 		? activeAccount().session().data().unreadBadge()
@@ -551,12 +562,15 @@ bool Application::openLocalUrl(const QString &url, QVariant context) {
 	}
 	auto command = urlTrimmed.midRef(protocol.size());
 
+	const auto session = activeAccount().sessionExists()
+		? &activeAccount().session()
+		: nullptr;
 	using namespace qthelp;
 	const auto options = RegExOption::CaseInsensitive;
 	for (const auto &[expression, handler] : LocalUrlHandlers()) {
 		const auto match = regex_match(expression, command, options);
 		if (match) {
-			return handler(match, context);
+			return handler(session, match, context);
 		}
 	}
 	return false;
diff --git a/Telegram/SourceFiles/core/application.h b/Telegram/SourceFiles/core/application.h
index f9d8c444d..10fc5c8ea 100644
--- a/Telegram/SourceFiles/core/application.h
+++ b/Telegram/SourceFiles/core/application.h
@@ -130,17 +130,18 @@ public:
 	void badMtprotoConfigurationError();
 
 	// Databases.
-	Storage::Databases &databases() {
+	[[nodiscard]] Storage::Databases &databases() {
 		return *_databases;
 	}
 
 	// Account component.
-	Main::Account &activeAccount() const {
+	[[nodiscard]] Main::Account &activeAccount() const {
 		return *_account;
 	}
+	[[nodiscard]] bool exportPreventsQuit();
 
 	// Main::Session component.
-	int unreadBadge() const;
+	[[nodiscard]] int unreadBadge() const;
 	bool unreadBadgeMuted() const;
 
 	// Media component.
diff --git a/Telegram/SourceFiles/core/local_url_handlers.cpp b/Telegram/SourceFiles/core/local_url_handlers.cpp
index d7468ea25..f80888243 100644
--- a/Telegram/SourceFiles/core/local_url_handlers.cpp
+++ b/Telegram/SourceFiles/core/local_url_handlers.cpp
@@ -33,19 +33,22 @@ namespace {
 
 using Match = qthelp::RegularExpressionMatch;
 
-bool JoinGroupByHash(const Match &match, const QVariant &context) {
-	if (!Main::Session::Exists()) {
+bool JoinGroupByHash(
+		Main::Session *session,
+		const Match &match,
+		const QVariant &context) {
+	if (!session) {
 		return false;
 	}
 	const auto hash = match->captured(1);
-	Auth().api().checkChatInvite(hash, [=](const MTPChatInvite &result) {
+	session->api().checkChatInvite(hash, [=](const MTPChatInvite &result) {
 		Core::App().hideMediaView();
 		result.match([=](const MTPDchatInvite &data) {
-			Ui::show(Box<ConfirmInviteBox>(data, [=] {
-				Auth().api().importChatInvite(hash);
+			Ui::show(Box<ConfirmInviteBox>(session, data, [=] {
+				session->api().importChatInvite(hash);
 			}));
 		}, [=](const MTPDchatInviteAlready &data) {
-			if (const auto chat = Auth().data().processChat(data.vchat())) {
+			if (const auto chat = session->data().processChat(data.vchat())) {
 				App::wnd()->sessionController()->showPeerHistory(
 					chat,
 					Window::SectionShow::Way::Forward);
@@ -61,8 +64,11 @@ bool JoinGroupByHash(const Match &match, const QVariant &context) {
 	return true;
 }
 
-bool ShowStickerSet(const Match &match, const QVariant &context) {
-	if (!Main::Session::Exists()) {
+bool ShowStickerSet(
+		Main::Session *session,
+		const Match &match,
+		const QVariant &context) {
+	if (!session) {
 		return false;
 	}
 	Core::App().hideMediaView();
@@ -72,14 +78,20 @@ bool ShowStickerSet(const Match &match, const QVariant &context) {
 	return true;
 }
 
-bool SetLanguage(const Match &match, const QVariant &context) {
+bool SetLanguage(
+		Main::Session *session,
+		const Match &match,
+		const QVariant &context) {
 	const auto languageId = match->captured(1);
 	Lang::CurrentCloudManager().switchWithWarning(languageId);
 	return true;
 }
 
-bool ShareUrl(const Match &match, const QVariant &context) {
-	if (!Main::Session::Exists()) {
+bool ShareUrl(
+		Main::Session *session,
+		const Match &match,
+		const QVariant &context) {
+	if (!session) {
 		return false;
 	}
 	auto params = url_parse_params(
@@ -93,8 +105,11 @@ bool ShareUrl(const Match &match, const QVariant &context) {
 	return true;
 }
 
-bool ConfirmPhone(const Match &match, const QVariant &context) {
-	if (!Main::Session::Exists()) {
+bool ConfirmPhone(
+		Main::Session *session,
+		const Match &match,
+		const QVariant &context) {
+	if (!session) {
 		return false;
 	}
 	auto params = url_parse_params(
@@ -109,8 +124,11 @@ bool ConfirmPhone(const Match &match, const QVariant &context) {
 	return true;
 }
 
-bool ShareGameScore(const Match &match, const QVariant &context) {
-	if (!Main::Session::Exists()) {
+bool ShareGameScore(
+		Main::Session *session,
+		const Match &match,
+		const QVariant &context) {
+	if (!session) {
 		return false;
 	}
 	const auto params = url_parse_params(
@@ -120,7 +138,10 @@ bool ShareGameScore(const Match &match, const QVariant &context) {
 	return true;
 }
 
-bool ApplySocksProxy(const Match &match, const QVariant &context) {
+bool ApplySocksProxy(
+		Main::Session *session,
+		const Match &match,
+		const QVariant &context) {
 	auto params = url_parse_params(
 		match->captured(1),
 		qthelp::UrlParamNameTransform::ToLower);
@@ -128,7 +149,10 @@ bool ApplySocksProxy(const Match &match, const QVariant &context) {
 	return true;
 }
 
-bool ApplyMtprotoProxy(const Match &match, const QVariant &context) {
+bool ApplyMtprotoProxy(
+		Main::Session *session,
+		const Match &match,
+		const QVariant &context) {
 	auto params = url_parse_params(
 		match->captured(1),
 		qthelp::UrlParamNameTransform::ToLower);
@@ -160,26 +184,36 @@ bool ShowPassportForm(const QMap<QString, QString> &params) {
 	return false;
 }
 
-bool ShowPassport(const Match &match, const QVariant &context) {
+bool ShowPassport(
+		Main::Session *session,
+		const Match &match,
+		const QVariant &context) {
 	return ShowPassportForm(url_parse_params(
 		match->captured(1),
 		qthelp::UrlParamNameTransform::ToLower));
 }
 
-bool ShowWallPaper(const Match &match, const QVariant &context) {
-	if (!Main::Session::Exists()) {
+bool ShowWallPaper(
+		Main::Session *session,
+		const Match &match,
+		const QVariant &context) {
+	if (!session) {
 		return false;
 	}
 	const auto params = url_parse_params(
 		match->captured(1),
 		qthelp::UrlParamNameTransform::ToLower);
 	return BackgroundPreviewBox::Start(
+		session,
 		params.value(qsl("slug")),
 		params);
 }
 
-bool ResolveUsername(const Match &match, const QVariant &context) {
-	if (!Main::Session::Exists()) {
+bool ResolveUsername(
+		Main::Session *session,
+		const Match &match,
+		const QVariant &context) {
+	if (!session) {
 		return false;
 	}
 	const auto params = url_parse_params(
@@ -228,8 +262,11 @@ bool ResolveUsername(const Match &match, const QVariant &context) {
 	return true;
 }
 
-bool ResolvePrivatePost(const Match &match, const QVariant &context) {
-	if (!Main::Session::Exists()) {
+bool ResolvePrivatePost(
+		Main::Session *session,
+		const Match &match,
+		const QVariant &context) {
+	if (!session) {
 		return false;
 	}
 	const auto params = url_parse_params(
@@ -249,18 +286,17 @@ bool ResolvePrivatePost(const Match &match, const QVariant &context) {
 	const auto fail = [=] {
 		Ui::show(Box<InformBox>(tr::lng_error_post_link_invalid(tr::now)));
 	};
-	const auto auth = &Auth();
-	if (const auto channel = auth->data().channelLoaded(channelId)) {
+	if (const auto channel = session->data().channelLoaded(channelId)) {
 		done(channel);
 		return true;
 	}
-	auth->api().request(MTPchannels_GetChannels(
+	session->api().request(MTPchannels_GetChannels(
 		MTP_vector<MTPInputChannel>(
 			1,
 			MTP_inputChannel(MTP_int(channelId), MTP_long(0)))
 	)).done([=](const MTPmessages_Chats &result) {
 		result.match([&](const auto &data) {
-			const auto peer = auth->data().processChats(data.vchats());
+			const auto peer = session->data().processChats(data.vchats());
 			if (peer && peer->id == peerFromChannel(channelId)) {
 				done(peer);
 			} else {
@@ -273,8 +309,11 @@ bool ResolvePrivatePost(const Match &match, const QVariant &context) {
 	return true;
 }
 
-bool HandleUnknown(const Match &match, const QVariant &context) {
-	if (!Main::Session::Exists()) {
+bool HandleUnknown(
+		Main::Session *session,
+		const Match &match,
+		const QVariant &context) {
+	if (!session) {
 		return false;
 	}
 	const auto request = match->captured(1);
@@ -298,7 +337,7 @@ bool HandleUnknown(const Match &match, const QVariant &context) {
 			Ui::show(Box<InformBox>(text));
 		}
 	};
-	Auth().api().requestDeepLinkInfo(request, callback);
+	session->api().requestDeepLinkInfo(request, callback);
 	return true;
 }
 
diff --git a/Telegram/SourceFiles/core/local_url_handlers.h b/Telegram/SourceFiles/core/local_url_handlers.h
index e4f266fec..a24040c08 100644
--- a/Telegram/SourceFiles/core/local_url_handlers.h
+++ b/Telegram/SourceFiles/core/local_url_handlers.h
@@ -11,11 +11,16 @@ namespace qthelp {
 class RegularExpressionMatch;
 } // namespace qthelp
 
+namespace Main {
+class Session;
+} // namespace Main
+
 namespace Core {
 
 struct LocalUrlHandler {
 	QString expression;
 	Fn<bool(
+		Main::Session *session,
 		const qthelp::RegularExpressionMatch &match,
 		const QVariant &context)> handler;
 };
diff --git a/Telegram/SourceFiles/history/history_inner_widget.cpp b/Telegram/SourceFiles/history/history_inner_widget.cpp
index 77f814ff8..7a5abb47f 100644
--- a/Telegram/SourceFiles/history/history_inner_widget.cpp
+++ b/Telegram/SourceFiles/history/history_inner_widget.cpp
@@ -3012,6 +3012,7 @@ void HistoryInner::deleteAsGroup(FullMsgId itemId) {
 			return deleteItem(item);
 		}
 		Ui::show(Box<DeleteMessagesBox>(
+			&session(),
 			session().data().itemsToIds(group->items)));
 	}
 }
diff --git a/Telegram/SourceFiles/history/history_widget.cpp b/Telegram/SourceFiles/history/history_widget.cpp
index b5b9c4b31..80b7ccd27 100644
--- a/Telegram/SourceFiles/history/history_widget.cpp
+++ b/Telegram/SourceFiles/history/history_widget.cpp
@@ -6131,7 +6131,9 @@ void HistoryWidget::confirmDeleteSelected() {
 		return;
 	}
 	const auto weak = make_weak(this);
-	const auto box = Ui::show(Box<DeleteMessagesBox>(std::move(items)));
+	const auto box = Ui::show(Box<DeleteMessagesBox>(
+		&session(),
+		std::move(items)));
 	box->setDeleteConfirmedCallback([=] {
 		if (const auto strong = weak.data()) {
 			strong->clearSelected();
diff --git a/Telegram/SourceFiles/history/view/history_view_context_menu.cpp b/Telegram/SourceFiles/history/view/history_view_context_menu.cpp
index f90924b87..ec582e384 100644
--- a/Telegram/SourceFiles/history/view/history_view_context_menu.cpp
+++ b/Telegram/SourceFiles/history/view/history_view_context_menu.cpp
@@ -298,10 +298,13 @@ bool AddDeleteSelectedAction(
 		return false;
 	}
 
+	const auto session = request.session;
 	menu->addAction(tr::lng_context_delete_selected(tr::now), [=] {
 		const auto weak = make_weak(list);
 		auto items = ExtractIdsList(request.selectedItems);
-		const auto box = Ui::show(Box<DeleteMessagesBox>(std::move(items)));
+		const auto box = Ui::show(Box<DeleteMessagesBox>(
+			session,
+			std::move(items)));
 		box->setDeleteConfirmedCallback([=] {
 			if (const auto strong = weak.data()) {
 				strong->cancelSelection();
@@ -338,6 +341,7 @@ bool AddDeleteMessageAction(
 			if (asGroup) {
 				if (const auto group = owner->groups().find(item)) {
 					Ui::show(Box<DeleteMessagesBox>(
+						&owner->session(),
 						owner->itemsToIds(group->items)));
 					return;
 				}
@@ -439,6 +443,10 @@ void AddCopyLinkAction(
 
 } // namespace
 
+ContextMenuRequest::ContextMenuRequest(not_null<Main::Session*> session)
+: session(session) {
+}
+
 base::unique_qptr<Ui::PopupMenu> FillContextMenu(
 		not_null<ListWidget*> list,
 		const ContextMenuRequest &request) {
diff --git a/Telegram/SourceFiles/history/view/history_view_context_menu.h b/Telegram/SourceFiles/history/view/history_view_context_menu.h
index 2e5915665..65d870a1b 100644
--- a/Telegram/SourceFiles/history/view/history_view_context_menu.h
+++ b/Telegram/SourceFiles/history/view/history_view_context_menu.h
@@ -13,6 +13,10 @@ namespace Ui {
 class PopupMenu;
 } // namespace Ui
 
+namespace Main {
+class Session;
+} // namespace Main
+
 namespace HistoryView {
 
 enum class PointState : char;
@@ -22,6 +26,9 @@ struct SelectedItem;
 using SelectedItems = std::vector<SelectedItem>;
 
 struct ContextMenuRequest {
+	explicit ContextMenuRequest(not_null<Main::Session*> session);
+
+	const not_null<Main::Session*> session;
 	ClickHandlerPtr link;
 	Element *view = nullptr;
 	HistoryItem *item = nullptr;
diff --git a/Telegram/SourceFiles/history/view/history_view_list_widget.cpp b/Telegram/SourceFiles/history/view/history_view_list_widget.cpp
index 02f46c5c5..021c649a4 100644
--- a/Telegram/SourceFiles/history/view/history_view_list_widget.cpp
+++ b/Telegram/SourceFiles/history/view/history_view_list_widget.cpp
@@ -1611,7 +1611,8 @@ void ListWidget::showContextMenu(QContextMenuEvent *e, bool showFromTouch) {
 		mouseActionUpdate(e->globalPos());
 	}
 
-	ContextMenuRequest request;
+	auto request = ContextMenuRequest(&_controller->session());
+
 	request.link = ClickHandler::getActive();
 	request.view = _overElement;
 	request.item = _overItemExact
diff --git a/Telegram/SourceFiles/info/info_top_bar.cpp b/Telegram/SourceFiles/info/info_top_bar.cpp
index f00d453df..08add27da 100644
--- a/Telegram/SourceFiles/info/info_top_bar.cpp
+++ b/Telegram/SourceFiles/info/info_top_bar.cpp
@@ -35,9 +35,11 @@ namespace Info {
 
 TopBar::TopBar(
 	QWidget *parent,
+	not_null<Main::Session*> session,
 	const style::InfoTopBar &st,
 	SelectedItems &&selectedItems)
 : RpWidget(parent)
+, _session(session)
 , _st(st)
 , _selectedItems(Section::MediaType::kCount) {
 	setAttribute(Qt::WA_OpaquePaintEvent);
@@ -516,8 +518,8 @@ MessageIdsList TopBar::collectItems() const {
 		_selectedItems.list
 	) | ranges::view::transform([](auto &&item) {
 		return item.msgId;
-	}) | ranges::view::filter([](FullMsgId msgId) {
-		return Auth().data().message(msgId) != nullptr;
+	}) | ranges::view::filter([&](FullMsgId msgId) {
+		return _session->data().message(msgId) != nullptr;
 	}) | ranges::to_vector;
 }
 
@@ -541,7 +543,9 @@ void TopBar::performDelete() {
 	if (items.empty()) {
 		_cancelSelectionClicks.fire({});
 	} else {
-		const auto box = Ui::show(Box<DeleteMessagesBox>(std::move(items)));
+		const auto box = Ui::show(Box<DeleteMessagesBox>(
+			_session,
+			std::move(items)));
 		box->setDeleteConfirmedCallback([weak = make_weak(this)] {
 			if (weak) {
 				weak->_cancelSelectionClicks.fire({});
diff --git a/Telegram/SourceFiles/info/info_top_bar.h b/Telegram/SourceFiles/info/info_top_bar.h
index 82396bcdf..3a92216b2 100644
--- a/Telegram/SourceFiles/info/info_top_bar.h
+++ b/Telegram/SourceFiles/info/info_top_bar.h
@@ -39,6 +39,7 @@ class TopBar : public Ui::RpWidget {
 public:
 	TopBar(
 		QWidget *parent,
+		not_null<Main::Session*> session,
 		const style::InfoTopBar &st,
 		SelectedItems &&items);
 
@@ -130,6 +131,8 @@ private:
 	template <typename Widget, typename IsVisible>
 	void registerToggleControlCallback(Widget *widget, IsVisible &&callback);
 
+	const not_null<Main::Session*> _session;
+
 	const style::InfoTopBar &_st;
 	Ui::Animations::Simple _a_highlight;
 	bool _highlight = false;
diff --git a/Telegram/SourceFiles/info/info_wrap_widget.cpp b/Telegram/SourceFiles/info/info_wrap_widget.cpp
index 0ff8df071..00e5aca2e 100644
--- a/Telegram/SourceFiles/info/info_wrap_widget.cpp
+++ b/Telegram/SourceFiles/info/info_wrap_widget.cpp
@@ -353,7 +353,11 @@ void WrapWidget::createTopBar() {
 	auto selectedItems = _topBar
 		? _topBar->takeSelectedItems()
 		: SelectedItems(Section::MediaType::kCount);
-	_topBar.create(this, TopBarStyle(wrapValue), std::move(selectedItems));
+	_topBar.create(
+		this,
+		&session(),
+		TopBarStyle(wrapValue),
+		std::move(selectedItems));
 	_topBar->cancelSelectionRequests(
 	) | rpl::start_with_next([this] {
 		_content->cancelSelection();
@@ -582,7 +586,7 @@ void WrapWidget::showTopBarMenu() {
 			_topBarMenu = nullptr;
 			controller->showSettings(type);
 		};
-		::Settings::FillMenu(showOther, addAction);
+		::Settings::FillMenu(&self->session(), showOther, addAction);
 	} else {
 		_topBarMenu = nullptr;
 		return;
diff --git a/Telegram/SourceFiles/info/media/info_media_list_widget.cpp b/Telegram/SourceFiles/info/media/info_media_list_widget.cpp
index 4dc05f78a..d1ee7add9 100644
--- a/Telegram/SourceFiles/info/media/info_media_list_widget.cpp
+++ b/Telegram/SourceFiles/info/media/info_media_list_widget.cpp
@@ -1422,7 +1422,9 @@ void ListWidget::deleteItem(UniversalMsgId universalId) {
 DeleteMessagesBox *ListWidget::deleteItems(MessageIdsList &&items) {
 	if (!items.empty()) {
 		const auto box = Ui::show(
-			Box<DeleteMessagesBox>(std::move(items))).data();
+			Box<DeleteMessagesBox>(
+				&_controller->session(),
+				std::move(items))).data();
 		setActionBoxWeak(box);
 		return box;
 	}
diff --git a/Telegram/SourceFiles/info/settings/info_settings_widget.cpp b/Telegram/SourceFiles/info/settings/info_settings_widget.cpp
index 734b794ba..89a09479c 100644
--- a/Telegram/SourceFiles/info/settings/info_settings_widget.cpp
+++ b/Telegram/SourceFiles/info/settings/info_settings_widget.cpp
@@ -45,8 +45,7 @@ Widget::Widget(
 , _inner(setInnerWidget(::Settings::CreateSection(
 		_type,
 		this,
-		controller->parentController(),
-		_self))) {
+		controller->parentController()))) {
 	_inner->sectionShowOther(
 	) | rpl::start_with_next([=](Type type) {
 		controller->showSettings(type);
diff --git a/Telegram/SourceFiles/passport/passport_form_controller.h b/Telegram/SourceFiles/passport/passport_form_controller.h
index e05664745..aadb0cd90 100644
--- a/Telegram/SourceFiles/passport/passport_form_controller.h
+++ b/Telegram/SourceFiles/passport/passport_form_controller.h
@@ -325,6 +325,10 @@ public:
 		not_null<Window::SessionController*> controller,
 		const FormRequest &request);
 
+	not_null<Window::SessionController*> window() const {
+		return _controller;
+	}
+
 	void show();
 	UserData *bot() const;
 	QString privacyPolicyUrl() const;
diff --git a/Telegram/SourceFiles/passport/passport_panel_controller.cpp b/Telegram/SourceFiles/passport/passport_panel_controller.cpp
index 8fbf26bbf..bd22ba3d7 100644
--- a/Telegram/SourceFiles/passport/passport_panel_controller.cpp
+++ b/Telegram/SourceFiles/passport/passport_panel_controller.cpp
@@ -17,6 +17,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "base/unixtime.h"
 #include "boxes/passcode_box.h"
 #include "boxes/confirm_box.h"
+#include "window/window_session_controller.h"
 #include "ui/toast/toast.h"
 #include "ui/rp_widget.h"
 #include "ui/countryinput.h"
@@ -723,7 +724,7 @@ void PanelController::setupPassword() {
 	auto fields = PasscodeBox::CloudFields();
 	fields.newAlgo = settings.newAlgo;
 	fields.newSecureSecretAlgo = settings.newSecureAlgo;
-	auto box = show(Box<PasscodeBox>(fields));
+	auto box = show(Box<PasscodeBox>(&_form->window()->session(), fields));
 	box->newPasswordSet(
 	) | rpl::filter([=](const QByteArray &password) {
 		return !password.isEmpty();
diff --git a/Telegram/SourceFiles/settings/settings_advanced.cpp b/Telegram/SourceFiles/settings/settings_advanced.cpp
index 5f4456c38..a1ebd6169 100644
--- a/Telegram/SourceFiles/settings/settings_advanced.cpp
+++ b/Telegram/SourceFiles/settings/settings_advanced.cpp
@@ -20,6 +20,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "info/profile/info_profile_button.h"
 #include "platform/platform_specific.h"
 #include "platform/platform_info.h"
+#include "window/window_session_controller.h"
 #include "lang/lang_keys.h"
 #include "core/update_checker.h"
 #include "core/application.h"
@@ -418,7 +419,9 @@ void SetupAnimations(not_null<Ui::VerticalLayout*> container) {
 	}, container->lifetime());
 }
 
-void SetupPerformance(not_null<Ui::VerticalLayout*> container) {
+void SetupPerformance(
+		not_null<Window::SessionController*> controller,
+		not_null<Ui::VerticalLayout*> container) {
 	SetupAnimations(container);
 
 	AddButton(
@@ -430,10 +433,10 @@ void SetupPerformance(not_null<Ui::VerticalLayout*> container) {
 	)->toggledValue(
 	) | rpl::filter([](bool enabled) {
 		return (enabled != cAutoPlayGif());
-	}) | rpl::start_with_next([](bool enabled) {
+	}) | rpl::start_with_next([=](bool enabled) {
 		cSetAutoPlayGif(enabled);
 		if (!cAutoPlayGif()) {
-			Auth().data().stopAutoplayAnimations();
+			controller->session().data().stopAutoplayAnimations();
 		}
 		Local::writeUserSettings();
 	}, container->lifetime());
@@ -456,16 +459,18 @@ void SetupSystemIntegration(
 	AddSkip(container);
 }
 
-Advanced::Advanced(QWidget *parent, UserData *self)
+Advanced::Advanced(
+	QWidget *parent,
+	not_null<Window::SessionController*> controller)
 : Section(parent) {
-	setupContent();
+	setupContent(controller);
 }
 
 rpl::producer<Type> Advanced::sectionShowOther() {
 	return _showOther.events();
 }
 
-void Advanced::setupContent() {
+void Advanced::setupContent(not_null<Window::SessionController*> controller) {
 	const auto content = Ui::CreateChild<Ui::VerticalLayout>(this);
 
 	auto empty = true;
@@ -495,8 +500,8 @@ void Advanced::setupContent() {
 		SetupConnectionType(content);
 		AddSkip(content);
 	}
-	SetupDataStorage(content);
-	SetupAutoDownload(content);
+	SetupDataStorage(controller, content);
+	SetupAutoDownload(controller, content);
 	SetupSystemIntegration(content, [=](Type type) {
 		_showOther.fire_copy(type);
 	});
@@ -504,7 +509,7 @@ void Advanced::setupContent() {
 	AddDivider(content);
 	AddSkip(content);
 	AddSubsectionTitle(content, tr::lng_settings_performance());
-	SetupPerformance(content);
+	SetupPerformance(controller, content);
 	AddSkip(content);
 
 	if (cAutoUpdate()) {
diff --git a/Telegram/SourceFiles/settings/settings_advanced.h b/Telegram/SourceFiles/settings/settings_advanced.h
index 60d8c3f44..998f3700d 100644
--- a/Telegram/SourceFiles/settings/settings_advanced.h
+++ b/Telegram/SourceFiles/settings/settings_advanced.h
@@ -21,12 +21,14 @@ void SetupAnimations(not_null<Ui::VerticalLayout*> container);
 
 class Advanced : public Section {
 public:
-	explicit Advanced(QWidget *parent, UserData *self = nullptr);
+	Advanced(
+		QWidget *parent,
+		not_null<Window::SessionController*> controller);
 
 	rpl::producer<Type> sectionShowOther() override;
 
 private:
-	void setupContent();
+	void setupContent(not_null<Window::SessionController*> controller);
 
 	rpl::event_stream<Type> _showOther;
 
diff --git a/Telegram/SourceFiles/settings/settings_calls.cpp b/Telegram/SourceFiles/settings/settings_calls.cpp
index 3bc9015ae..5a1e2cdd7 100644
--- a/Telegram/SourceFiles/settings/settings_calls.cpp
+++ b/Telegram/SourceFiles/settings/settings_calls.cpp
@@ -38,9 +38,11 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 
 namespace Settings {
 
-Calls::Calls(QWidget *parent, UserData *self)
+Calls::Calls(
+	QWidget *parent,
+	not_null<Window::SessionController*> controller)
 : Section(parent) {
-	setupContent();
+	setupContent(controller);
 }
 
 Calls::~Calls() {
@@ -56,7 +58,7 @@ void Calls::sectionSaveChanges(FnMut<void()> done) {
 	done();
 }
 
-void Calls::setupContent() {
+void Calls::setupContent(not_null<Window::SessionController*> controller) {
 	using namespace tgvoip;
 
 	const auto content = Ui::CreateChild<Ui::VerticalLayout>(this);
diff --git a/Telegram/SourceFiles/settings/settings_calls.h b/Telegram/SourceFiles/settings/settings_calls.h
index 7745f8ecc..9fc098400 100644
--- a/Telegram/SourceFiles/settings/settings_calls.h
+++ b/Telegram/SourceFiles/settings/settings_calls.h
@@ -11,27 +11,28 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "base/timer.h"
 
 namespace Calls {
-	class Call;
+class Call;
 } // namespace Calls
 
 namespace Ui {
-	class LevelMeter;
-}
+class LevelMeter;
+} // namespace Ui
 
 namespace tgvoip {
-	class AudioInputTester;
-}
+class AudioInputTester;
+} // namespace tgvoip
 
 namespace Settings {
 
 class Calls : public Section {
 public:
-	explicit Calls(QWidget *parent, UserData *self = nullptr);
-	virtual ~Calls();
-	virtual void sectionSaveChanges(FnMut<void()> done) override;
+	Calls(QWidget *parent, not_null<Window::SessionController*> controller);
+	~Calls();
+
+	void sectionSaveChanges(FnMut<void()> done) override;
 
 private:
-	void setupContent();
+	void setupContent(not_null<Window::SessionController*> controller);
 	void requestPermissionAndStartTestingMicrophone();
 	void startTestingMicrophone();
 	void stopTestingMicrophone();
@@ -43,6 +44,7 @@ private:
 	std::unique_ptr<tgvoip::AudioInputTester> _micTester;
 	Ui::LevelMeter *_micTestLevel = nullptr;
 	base::Timer _levelUpdateTimer;
+
 };
 
 } // namespace Settings
diff --git a/Telegram/SourceFiles/settings/settings_chat.cpp b/Telegram/SourceFiles/settings/settings_chat.cpp
index cb626ab93..7ad4da393 100644
--- a/Telegram/SourceFiles/settings/settings_chat.cpp
+++ b/Telegram/SourceFiles/settings/settings_chat.cpp
@@ -27,6 +27,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "lang/lang_keys.h"
 #include "window/themes/window_theme_editor.h"
 #include "window/themes/window_theme.h"
+#include "window/window_session_controller.h"
 #include "info/profile/info_profile_button.h"
 #include "storage/localstorage.h"
 #include "core/file_utilities.h"
@@ -44,7 +45,9 @@ namespace Settings {
 
 class BackgroundRow : public Ui::RpWidget {
 public:
-	BackgroundRow(QWidget *parent);
+	BackgroundRow(
+		QWidget *parent,
+		not_null<Window::SessionController*> controller);
 
 protected:
 	void paintEvent(QPaintEvent *e) override;
@@ -106,9 +109,14 @@ private:
 
 };
 
-void ChooseFromFile(not_null<QWidget*> parent);
+void ChooseFromFile(
+	not_null<::Main::Session*> session,
+	not_null<QWidget*> parent);
 
-BackgroundRow::BackgroundRow(QWidget *parent) : RpWidget(parent)
+BackgroundRow::BackgroundRow(
+	QWidget *parent,
+	not_null<Window::SessionController*> controller)
+: RpWidget(parent)
 , _chooseFromGallery(
 	this,
 	tr::lng_settings_bg_from_gallery(tr::now),
@@ -117,11 +125,11 @@ BackgroundRow::BackgroundRow(QWidget *parent) : RpWidget(parent)
 , _radial([=](crl::time now) { radialAnimationCallback(now); }) {
 	updateImage();
 
-	_chooseFromGallery->addClickHandler([] {
-		Ui::show(Box<BackgroundBox>());
+	_chooseFromGallery->addClickHandler([=] {
+		Ui::show(Box<BackgroundBox>(&controller->session()));
 	});
 	_chooseFromFile->addClickHandler([=] {
-		ChooseFromFile(this);
+		ChooseFromFile(&controller->session(), this);
 	});
 
 	using Update = const Window::Theme::BackgroundUpdate;
@@ -361,14 +369,17 @@ void DefaultTheme::checkedChangedHook(anim::type animated) {
 	_radio.setChecked(checked(), animated);
 }
 
-void ChooseFromFile(not_null<QWidget*> parent) {
+void ChooseFromFile(
+		not_null<::Main::Session*> session,
+		not_null<QWidget*> parent) {
 	const auto &imgExtensions = cImgExtensions();
 	auto filters = QStringList(
 		qsl("Theme files (*.tdesktop-theme *.tdesktop-palette *")
 		+ imgExtensions.join(qsl(" *"))
 		+ qsl(")"));
 	filters.push_back(FileDialog::AllFilesFilter());
-	const auto callback = [=](const FileDialog::OpenResult &result) {
+	const auto callback = crl::guard(session, [=](
+			const FileDialog::OpenResult &result) {
 		if (result.paths.isEmpty() && result.remoteContent.isEmpty()) {
 			return;
 		}
@@ -396,8 +407,8 @@ void ChooseFromFile(not_null<QWidget*> parent) {
 			std::make_unique<Images::ImageSource>(
 				std::move(image),
 				"JPG")));
-		Ui::show(Box<BackgroundPreviewBox>(local));
-	};
+		Ui::show(Box<BackgroundPreviewBox>(session, local));
+	});
 	FileDialog::GetOpenPath(
 		parent.get(),
 		tr::lng_choose_image(tr::now),
@@ -492,7 +503,9 @@ void SetupStickersEmoji(not_null<Ui::VerticalLayout*> container) {
 	AddSkip(container, st::settingsCheckboxesSkip);
 }
 
-void SetupMessages(not_null<Ui::VerticalLayout*> container) {
+void SetupMessages(
+		not_null<Window::SessionController*> controller,
+		not_null<Ui::VerticalLayout*> container) {
 	AddDivider(container);
 	AddSkip(container);
 
@@ -512,7 +525,7 @@ void SetupMessages(not_null<Ui::VerticalLayout*> container) {
 			QMargins(0, skip, 0, skip)));
 
 	const auto group = std::make_shared<Ui::RadioenumGroup<SendByType>>(
-		Auth().settings().sendSubmitWay());
+		controller->session().settings().sendSubmitWay());
 	const auto add = [&](SendByType value, const QString &text) {
 		inner->add(
 			object_ptr<Ui::Radioenum<SendByType>>(
@@ -532,8 +545,8 @@ void SetupMessages(not_null<Ui::VerticalLayout*> container) {
 			? tr::lng_settings_send_cmdenter(tr::now)
 			: tr::lng_settings_send_ctrlenter(tr::now)));
 
-	group->setChangedCallback([](SendByType value) {
-		Auth().settings().setSendSubmitWay(value);
+	group->setChangedCallback([=](SendByType value) {
+		controller->session().settings().setSendSubmitWay(value);
 		if (App::main()) {
 			App::main()->ctrlEnterSubmitUpdated();
 		}
@@ -543,33 +556,38 @@ void SetupMessages(not_null<Ui::VerticalLayout*> container) {
 	AddSkip(inner, st::settingsCheckboxesSkip);
 }
 
-void SetupExport(not_null<Ui::VerticalLayout*> container) {
+void SetupExport(
+		not_null<Window::SessionController*> controller,
+		not_null<Ui::VerticalLayout*> container) {
 	AddButton(
 		container,
 		tr::lng_settings_export_data(),
 		st::settingsButton
-	)->addClickHandler([] {
+	)->addClickHandler([=] {
+		const auto session = &controller->session();
 		Ui::hideSettingsAndLayer();
 		App::CallDelayed(
 			st::boxDuration,
-			&Auth(),
-			[] { Auth().data().startExport(); });
+			session,
+			[=] { session->data().startExport(); });
 	});
 }
 
-void SetupLocalStorage(not_null<Ui::VerticalLayout*> container) {
+void SetupLocalStorage(
+		not_null<Window::SessionController*> controller,
+		not_null<Ui::VerticalLayout*> container) {
 	AddButton(
 		container,
 		tr::lng_settings_manage_local_storage(),
 		st::settingsButton
-	)->addClickHandler([] {
-		LocalStorageBox::Show(
-			&Auth().data().cache(),
-			&Auth().data().cacheBigFile());
+	)->addClickHandler([=] {
+		LocalStorageBox::Show(&controller->session());
 	});
 }
 
-void SetupDataStorage(not_null<Ui::VerticalLayout*> container) {
+void SetupDataStorage(
+		not_null<Window::SessionController*> controller,
+		not_null<Ui::VerticalLayout*> container) {
 	using namespace rpl::mappers;
 
 	AddDivider(container);
@@ -623,13 +641,15 @@ void SetupDataStorage(not_null<Ui::VerticalLayout*> container) {
 
 	}, ask->lifetime());
 
-	SetupLocalStorage(container);
-	SetupExport(container);
+	SetupLocalStorage(controller, container);
+	SetupExport(controller, container);
 
 	AddSkip(container, st::settingsCheckboxesSkip);
 }
 
-void SetupAutoDownload(not_null<Ui::VerticalLayout*> container) {
+void SetupAutoDownload(
+		not_null<Window::SessionController*> controller,
+		not_null<Ui::VerticalLayout*> container) {
 	AddDivider(container);
 	AddSkip(container);
 
@@ -642,7 +662,7 @@ void SetupAutoDownload(not_null<Ui::VerticalLayout*> container) {
 			std::move(label),
 			st::settingsButton
 		)->addClickHandler([=] {
-			Ui::show(Box<AutoDownloadBox>(source));
+			Ui::show(Box<AutoDownloadBox>(&controller->session(), source));
 		});
 	};
 	add(tr::lng_media_auto_in_private(), Source::User);
@@ -652,14 +672,16 @@ void SetupAutoDownload(not_null<Ui::VerticalLayout*> container) {
 	AddSkip(container, st::settingsCheckboxesSkip);
 }
 
-void SetupChatBackground(not_null<Ui::VerticalLayout*> container) {
+void SetupChatBackground(
+		not_null<Window::SessionController*> controller,
+		not_null<Ui::VerticalLayout*> container) {
 	AddDivider(container);
 	AddSkip(container);
 
 	AddSubsectionTitle(container, tr::lng_settings_section_background());
 
 	container->add(
-		object_ptr<BackgroundRow>(container),
+		object_ptr<BackgroundRow>(container, controller),
 		st::settingsBackgroundPadding);
 
 	const auto skipTop = st::settingsCheckbox.margin.top();
@@ -925,10 +947,12 @@ void SetupThemeOptions(not_null<Ui::VerticalLayout*> container) {
 	AddSkip(container);
 }
 
-void SetupSupportSwitchSettings(not_null<Ui::VerticalLayout*> container) {
+void SetupSupportSwitchSettings(
+		not_null<Window::SessionController*> controller,
+		not_null<Ui::VerticalLayout*> container) {
 	using SwitchType = Support::SwitchSettings;
 	const auto group = std::make_shared<Ui::RadioenumGroup<SwitchType>>(
-		Auth().settings().supportSwitch());
+		controller->session().settings().supportSwitch());
 	const auto add = [&](SwitchType value, const QString &label) {
 		container->add(
 			object_ptr<Ui::Radioenum<SwitchType>>(
@@ -942,13 +966,15 @@ void SetupSupportSwitchSettings(not_null<Ui::VerticalLayout*> container) {
 	add(SwitchType::None, "Just send the reply");
 	add(SwitchType::Next, "Send and switch to next");
 	add(SwitchType::Previous, "Send and switch to previous");
-	group->setChangedCallback([](SwitchType value) {
-		Auth().settings().setSupportSwitch(value);
+	group->setChangedCallback([=](SwitchType value) {
+		controller->session().settings().setSupportSwitch(value);
 		Local::writeUserSettings();
 	});
 }
 
-void SetupSupportChatsLimitSlice(not_null<Ui::VerticalLayout*> container) {
+void SetupSupportChatsLimitSlice(
+		not_null<Window::SessionController*> controller,
+		not_null<Ui::VerticalLayout*> container) {
 	constexpr auto kDayDuration = 24 * 60 * 60;
 	struct Option {
 		int days = 0;
@@ -961,7 +987,7 @@ void SetupSupportChatsLimitSlice(not_null<Ui::VerticalLayout*> container) {
 		{ 365, "1 year" },
 		{ 0, "All of them" },
 	};
-	const auto current = Auth().settings().supportChatsTimeSlice();
+	const auto current = controller->session().settings().supportChatsTimeSlice();
 	const auto days = current / kDayDuration;
 	const auto best = ranges::min_element(
 		options,
@@ -980,12 +1006,15 @@ void SetupSupportChatsLimitSlice(not_null<Ui::VerticalLayout*> container) {
 			st::settingsSendTypePadding);
 	}
 	group->setChangedCallback([=](int days) {
-		Auth().settings().setSupportChatsTimeSlice(days * kDayDuration);
+		controller->session().settings().setSupportChatsTimeSlice(
+			days * kDayDuration);
 		Local::writeUserSettings();
 	});
 }
 
-void SetupSupport(not_null<Ui::VerticalLayout*> container) {
+void SetupSupport(
+		not_null<Window::SessionController*> controller,
+		not_null<Ui::VerticalLayout*> container) {
 	AddSkip(container);
 
 	AddSubsectionTitle(container, rpl::single(qsl("Support settings")));
@@ -1001,7 +1030,7 @@ void SetupSupport(not_null<Ui::VerticalLayout*> container) {
 			std::move(wrap),
 			QMargins(0, skip, 0, skip)));
 
-	SetupSupportSwitchSettings(inner);
+	SetupSupportSwitchSettings(controller, inner);
 
 	AddSkip(inner, st::settingsCheckboxesSkip);
 
@@ -1009,12 +1038,13 @@ void SetupSupport(not_null<Ui::VerticalLayout*> container) {
 		object_ptr<Ui::Checkbox>(
 			inner,
 			"Enable templates autocomplete",
-			Auth().settings().supportTemplatesAutocomplete(),
+			controller->session().settings().supportTemplatesAutocomplete(),
 			st::settingsCheckbox),
 		st::settingsSendTypePadding
 	)->checkedChanges(
 	) | rpl::start_with_next([=](bool checked) {
-		Auth().settings().setSupportTemplatesAutocomplete(checked);
+		controller->session().settings().setSupportTemplatesAutocomplete(
+			checked);
 		Local::writeUserSettings();
 	}, inner->lifetime());
 
@@ -1022,26 +1052,25 @@ void SetupSupport(not_null<Ui::VerticalLayout*> container) {
 
 	AddSubsectionTitle(inner, rpl::single(qsl("Load chats for a period")));
 
-	SetupSupportChatsLimitSlice(inner);
+	SetupSupportChatsLimitSlice(controller, inner);
 
 	AddSkip(inner, st::settingsCheckboxesSkip);
 
 	AddSkip(inner);
 }
 
-Chat::Chat(QWidget *parent, not_null<UserData*> self)
-: Section(parent)
-, _self(self) {
-	setupContent();
+Chat::Chat(QWidget *parent, not_null<Window::SessionController*> controller)
+: Section(parent) {
+	setupContent(controller);
 }
 
-void Chat::setupContent() {
+void Chat::setupContent(not_null<Window::SessionController*> controller) {
 	const auto content = Ui::CreateChild<Ui::VerticalLayout>(this);
 
 	SetupThemeOptions(content);
-	SetupChatBackground(content);
+	SetupChatBackground(controller, content);
 	SetupStickersEmoji(content);
-	SetupMessages(content);
+	SetupMessages(controller, content);
 
 	Ui::ResizeFitChild(this, content);
 }
diff --git a/Telegram/SourceFiles/settings/settings_chat.h b/Telegram/SourceFiles/settings/settings_chat.h
index f9f2f9818..578210d77 100644
--- a/Telegram/SourceFiles/settings/settings_chat.h
+++ b/Telegram/SourceFiles/settings/settings_chat.h
@@ -11,19 +11,23 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 
 namespace Settings {
 
-void SetupDataStorage(not_null<Ui::VerticalLayout*> container);
-void SetupAutoDownload(not_null<Ui::VerticalLayout*> container);
+void SetupDataStorage(
+	not_null<Window::SessionController*> controller,
+	not_null<Ui::VerticalLayout*> container);
+void SetupAutoDownload(
+	not_null<Window::SessionController*> controller,
+	not_null<Ui::VerticalLayout*> container);
 void SetupDefaultThemes(not_null<Ui::VerticalLayout*> container);
-void SetupSupport(not_null<Ui::VerticalLayout*> container);
+void SetupSupport(
+	not_null<Window::SessionController*> controller,
+	not_null<Ui::VerticalLayout*> container);
 
 class Chat : public Section {
 public:
-	Chat(QWidget *parent, not_null<UserData*> self);
+	Chat(QWidget *parent, not_null<Window::SessionController*> controller);
 
 private:
-	void setupContent();
-
-	not_null<UserData*> _self;
+	void setupContent(not_null<Window::SessionController*> controller);
 
 };
 
diff --git a/Telegram/SourceFiles/settings/settings_codes.cpp b/Telegram/SourceFiles/settings/settings_codes.cpp
index f4522887a..378fa8a7d 100644
--- a/Telegram/SourceFiles/settings/settings_codes.cpp
+++ b/Telegram/SourceFiles/settings/settings_codes.cpp
@@ -27,8 +27,8 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 namespace Settings {
 
 auto GenerateCodes() {
-	auto codes = std::map<QString, Fn<void()>>();
-	codes.emplace(qsl("debugmode"), [] {
+	auto codes = std::map<QString, Fn<void(::Main::Session*)>>();
+	codes.emplace(qsl("debugmode"), [](::Main::Session *session) {
 		QString text = Logs::DebugEnabled()
 			? qsl("Do you want to disable DEBUG logs?")
 			: qsl("Do you want to enable DEBUG logs?\n\n"
@@ -37,24 +37,24 @@ auto GenerateCodes() {
 			Core::App().switchDebugMode();
 		}));
 	});
-	codes.emplace(qsl("viewlogs"), [] {
+	codes.emplace(qsl("viewlogs"), [](::Main::Session *session) {
 		File::ShowInFolder(cWorkingDir() + "log.txt");
 	});
-	codes.emplace(qsl("testmode"), [] {
+	codes.emplace(qsl("testmode"), [](::Main::Session *session) {
 		auto text = cTestMode() ? qsl("Do you want to disable TEST mode?") : qsl("Do you want to enable TEST mode?\n\nYou will be switched to test cloud.");
 		Ui::show(Box<ConfirmBox>(text, [] {
 			Core::App().switchTestMode();
 		}));
 	});
 	if (!Core::UpdaterDisabled()) {
-		codes.emplace(qsl("testupdate"), [] {
+		codes.emplace(qsl("testupdate"), [](::Main::Session *session) {
 			Core::UpdateChecker().test();
 		});
 	}
-	codes.emplace(qsl("loadlang"), [] {
+	codes.emplace(qsl("loadlang"), [](::Main::Session *session) {
 		Lang::CurrentCloudManager().switchToLanguage({ qsl("#custom") });
 	});
-	codes.emplace(qsl("debugfiles"), [] {
+	codes.emplace(qsl("debugfiles"), [](::Main::Session *session) {
 		if (!Logs::DebugEnabled()) {
 			return;
 		}
@@ -65,39 +65,39 @@ auto GenerateCodes() {
 		}
 		Ui::show(Box<InformBox>(DebugLogging::FileLoader() ? qsl("Enabled file download logging") : qsl("Disabled file download logging")));
 	});
-	codes.emplace(qsl("crashplease"), [] {
+	codes.emplace(qsl("crashplease"), [](::Main::Session *session) {
 		Unexpected("Crashed in Settings!");
 	});
-	codes.emplace(qsl("workmode"), [] {
+	codes.emplace(qsl("workmode"), [](::Main::Session *session) {
 		auto text = Global::DialogsModeEnabled() ? qsl("Disable work mode?") : qsl("Enable work mode?");
 		Ui::show(Box<ConfirmBox>(text, [] {
 			Core::App().switchWorkMode();
 		}));
 	});
-	codes.emplace(qsl("moderate"), [] {
+	codes.emplace(qsl("moderate"), [](::Main::Session *session) {
 		auto text = Global::ModerateModeEnabled() ? qsl("Disable moderate mode?") : qsl("Enable moderate mode?");
-		Ui::show(Box<ConfirmBox>(text, []() {
+		Ui::show(Box<ConfirmBox>(text, [] {
 			Global::SetModerateModeEnabled(!Global::ModerateModeEnabled());
 			Local::writeUserSettings();
 			Ui::hideLayer();
 		}));
 	});
-	codes.emplace(qsl("getdifference"), [] {
+	codes.emplace(qsl("getdifference"), [](::Main::Session *session) {
 		if (auto main = App::main()) {
 			main->getDifference();
 		}
 	});
-	codes.emplace(qsl("loadcolors"), [] {
+	codes.emplace(qsl("loadcolors"), [](::Main::Session *session) {
 		FileDialog::GetOpenPath(Core::App().getFileDialogParent(), "Open palette file", "Palette (*.tdesktop-palette)", [](const FileDialog::OpenResult &result) {
 			if (!result.paths.isEmpty()) {
 				Window::Theme::Apply(result.paths.front());
 			}
 		});
 	});
-	codes.emplace(qsl("edittheme"), [] {
+	codes.emplace(qsl("edittheme"), [](::Main::Session *session) {
 		Window::Theme::Editor::Start();
 	});
-	codes.emplace(qsl("videoplayer"), [] {
+	codes.emplace(qsl("videoplayer"), [](::Main::Session *session) {
 		auto text = cUseExternalVideoPlayer() ? qsl("Use internal video player?") : qsl("Use external video player?");
 		Ui::show(Box<ConfirmBox>(text, [] {
 			cSetUseExternalVideoPlayer(!cUseExternalVideoPlayer());
@@ -105,7 +105,7 @@ auto GenerateCodes() {
 			Ui::hideLayer();
 		}));
 	});
-	codes.emplace(qsl("endpoints"), [] {
+	codes.emplace(qsl("endpoints"), [](::Main::Session *session) {
 		FileDialog::GetOpenPath(Core::App().getFileDialogParent(), "Open DC endpoints", "DC Endpoints (*.tdesktop-endpoints)", [](const FileDialog::OpenResult &result) {
 			if (!result.paths.isEmpty()) {
 				if (!Core::App().dcOptions()->loadFromFile(result.paths.front())) {
@@ -114,12 +114,12 @@ auto GenerateCodes() {
 			}
 		});
 	});
-	codes.emplace(qsl("registertg"), [] {
+	codes.emplace(qsl("registertg"), [](::Main::Session *session) {
 		Platform::RegisterCustomScheme();
 		Ui::Toast::Show("Forced custom scheme register.");
 	});
-	codes.emplace(qsl("export"), [] {
-		Auth().data().startExport();
+	codes.emplace(qsl("export"), [](::Main::Session *session) {
+		session->data().startExport();
 	});
 
 	auto audioFilters = qsl("Audio files (*.wav *.mp3);;") + FileDialog::AllFilesFilter();
@@ -132,28 +132,28 @@ auto GenerateCodes() {
 		qsl("call_end"),
 	};
 	for (auto &key : audioKeys) {
-		codes.emplace(key, [audioFilters, key] {
-			if (!Main::Session::Exists()) {
+		codes.emplace(key, [=](::Main::Session *session) {
+			if (!session) {
 				return;
 			}
 
-			FileDialog::GetOpenPath(Core::App().getFileDialogParent(), "Open audio file", audioFilters, [key](const FileDialog::OpenResult &result) {
+			FileDialog::GetOpenPath(Core::App().getFileDialogParent(), "Open audio file", audioFilters, crl::guard(session, [=](const FileDialog::OpenResult &result) {
 				if (Main::Session::Exists() && !result.paths.isEmpty()) {
 					auto track = Media::Audio::Current().createTrack();
 					track->fillFromFile(result.paths.front());
 					if (track->failed()) {
 						Ui::show(Box<InformBox>("Could not audio :( Errors in 'log.txt'."));
 					} else {
-						Auth().settings().setSoundOverride(key, result.paths.front());
+						session->settings().setSoundOverride(key, result.paths.front());
 						Local::writeUserSettings();
 					}
 				}
-			});
+			}));
 		});
 	}
-	codes.emplace(qsl("sounds_reset"), [] {
-		if (Main::Session::Exists()) {
-			Auth().settings().clearSoundOverrides();
+	codes.emplace(qsl("sounds_reset"), [](::Main::Session *session) {
+		if (session) {
+			session->settings().clearSoundOverrides();
 			Local::writeUserSettings();
 			Ui::show(Box<InformBox>("All sound overrides were reset."));
 		}
@@ -161,7 +161,7 @@ auto GenerateCodes() {
 	return codes;
 }
 
-void CodesFeedString(const QString &text) {
+void CodesFeedString(::Main::Session *session, const QString &text) {
 	static const auto codes = GenerateCodes();
 	static auto secret = QString();
 
@@ -172,7 +172,7 @@ void CodesFeedString(const QString &text) {
 		auto found = false;
 		for (const auto &[key, method] : codes) {
 			if (piece == key) {
-				method();
+				method(session);
 				from = size;
 				found = true;
 				break;
diff --git a/Telegram/SourceFiles/settings/settings_codes.h b/Telegram/SourceFiles/settings/settings_codes.h
index 27798adc5..850daed45 100644
--- a/Telegram/SourceFiles/settings/settings_codes.h
+++ b/Telegram/SourceFiles/settings/settings_codes.h
@@ -7,8 +7,12 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 */
 #pragma once
 
+namespace Main {
+class Session;
+} // namespace Main
+
 namespace Settings {
 
-void CodesFeedString(const QString &text);
+void CodesFeedString(::Main::Session *session, const QString &text);
 
 } // namespace Settings
diff --git a/Telegram/SourceFiles/settings/settings_common.cpp b/Telegram/SourceFiles/settings/settings_common.cpp
index a7cc1022c..16cf208e0 100644
--- a/Telegram/SourceFiles/settings/settings_common.cpp
+++ b/Telegram/SourceFiles/settings/settings_common.cpp
@@ -30,23 +30,22 @@ namespace Settings {
 object_ptr<Section> CreateSection(
 		Type type,
 		not_null<QWidget*> parent,
-		Window::SessionController *controller,
-		UserData *self) {
+		not_null<Window::SessionController*> controller) {
 	switch (type) {
 	case Type::Main:
-		return object_ptr<Main>(parent, controller, self);
+		return object_ptr<Main>(parent, controller);
 	case Type::Information:
-		return object_ptr<Information>(parent, controller, self);
+		return object_ptr<Information>(parent, controller);
 	case Type::Notifications:
-		return object_ptr<Notifications>(parent, self);
+		return object_ptr<Notifications>(parent, controller);
 	case Type::PrivacySecurity:
-		return object_ptr<PrivacySecurity>(parent, self);
+		return object_ptr<PrivacySecurity>(parent, controller);
 	case Type::Advanced:
-		return object_ptr<Advanced>(parent, self);
+		return object_ptr<Advanced>(parent, controller);
 	case Type::Chat:
-		return object_ptr<Chat>(parent, self);
+		return object_ptr<Chat>(parent, controller);
 	case Type::Calls:
-		return object_ptr<Calls>(parent, self);
+		return object_ptr<Calls>(parent, controller);
 	}
 	Unexpected("Settings section type in Widget::createInnerWidget.");
 }
@@ -170,8 +169,11 @@ void AddSubsectionTitle(
 		st::settingsSubsectionTitlePadding);
 }
 
-void FillMenu(Fn<void(Type)> showOther, MenuCallback addAction) {
-	if (!Auth().supportMode()) {
+void FillMenu(
+		not_null<::Main::Session*> session,
+		Fn<void(Type)> showOther,
+		MenuCallback addAction) {
+	if (!session->supportMode()) {
 		addAction(
 			tr::lng_settings_information(tr::now),
 			[=] { showOther(Type::Information); });
diff --git a/Telegram/SourceFiles/settings/settings_common.h b/Telegram/SourceFiles/settings/settings_common.h
index 204a53d52..b0999709d 100644
--- a/Telegram/SourceFiles/settings/settings_common.h
+++ b/Telegram/SourceFiles/settings/settings_common.h
@@ -9,6 +9,10 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 
 #include "ui/rp_widget.h"
 
+namespace Main {
+class Session;
+} // namespace Main
+
 namespace Ui {
 class VerticalLayout;
 } // namespace Ui
@@ -60,8 +64,7 @@ public:
 object_ptr<Section> CreateSection(
 	Type type,
 	not_null<QWidget*> parent,
-	Window::SessionController *controller = nullptr,
-	UserData *self = nullptr);
+	not_null<Window::SessionController*> controller);
 
 void AddSkip(not_null<Ui::VerticalLayout*> container);
 void AddSkip(not_null<Ui::VerticalLayout*> container, int skip);
@@ -96,6 +99,7 @@ using MenuCallback = Fn<QAction*(
 	Fn<void()> handler)>;
 
 void FillMenu(
+	not_null<::Main::Session*> session,
 	Fn<void(Type)> showOther,
 	MenuCallback addAction);
 
diff --git a/Telegram/SourceFiles/settings/settings_information.cpp b/Telegram/SourceFiles/settings/settings_information.cpp
index 0572a773d..cc880344a 100644
--- a/Telegram/SourceFiles/settings/settings_information.cpp
+++ b/Telegram/SourceFiles/settings/settings_information.cpp
@@ -26,6 +26,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "info/profile/info_profile_button.h"
 #include "lang/lang_keys.h"
 #include "main/main_session.h"
+#include "window/window_session_controller.h"
 #include "apiwrap.h"
 #include "core/file_utilities.h"
 #include "styles/style_boxes.h"
@@ -79,7 +80,9 @@ void SetupPhoto(
 				Box<PhotoCropBox>(image, tr::lng_settings_crop_profile(tr::now)));
 			box->ready(
 			) | rpl::start_with_next([=](QImage &&image) {
-				Auth().api().uploadPeerPhoto(self, std::move(image));
+				self->session().api().uploadPeerPhoto(
+					self,
+					std::move(image));
 			}, box->lifetime());
 		};
 		FileDialog::GetOpenPath(
@@ -229,7 +232,7 @@ void SetupRows(
 		tr::lng_settings_phone_label(),
 		Info::Profile::PhoneValue(self),
 		tr::lng_profile_copy_phone(tr::now),
-		[] { Ui::show(Box<ChangePhoneBox>()); },
+		[=] { Ui::show(Box<ChangePhoneBox>(&self->session())); },
 		st::settingsInfoPhone);
 
 	auto username = Info::Profile::UsernameValue(self);
@@ -333,7 +336,7 @@ BioManager SetupBio(
 		countdown->setText(QString::number(countLeft));
 	};
 	const auto save = [=](FnMut<void()> done) {
-		Auth().api().saveSelfBio(
+		self->session().api().saveSelfBio(
 			TextUtilities::PrepareForSending(bio->getLastText()),
 			std::move(done));
 	};
@@ -408,10 +411,8 @@ BioManager SetupBio(
 
 Information::Information(
 	QWidget *parent,
-	not_null<Window::SessionController*> controller,
-	not_null<UserData*> self)
-: Section(parent)
-, _self(self) {
+	not_null<Window::SessionController*> controller)
+: Section(parent) {
 	setupContent(controller);
 }
 
@@ -423,13 +424,15 @@ Information::Information(
 //	_save(std::move(done));
 //}
 
-void Information::setupContent(not_null<Window::SessionController*> controller) {
+void Information::setupContent(
+		not_null<Window::SessionController*> controller) {
 	const auto content = Ui::CreateChild<Ui::VerticalLayout>(this);
 
-	SetupPhoto(content, controller, _self);
-	SetupRows(content, _self);
-	SetupBio(content, _self);
-	//auto manager = SetupBio(content, _self);
+	const auto self = controller->session().user();
+	SetupPhoto(content, controller, self);
+	SetupRows(content, self);
+	SetupBio(content, self);
+	//auto manager = SetupBio(content, self);
 	//_canSaveChanges = std::move(manager.canSave);
 	//_save = std::move(manager.save);
 
diff --git a/Telegram/SourceFiles/settings/settings_information.h b/Telegram/SourceFiles/settings/settings_information.h
index 0bd591721..b450101c8 100644
--- a/Telegram/SourceFiles/settings/settings_information.h
+++ b/Telegram/SourceFiles/settings/settings_information.h
@@ -15,13 +15,11 @@ class Information : public Section {
 public:
 	Information(
 		QWidget *parent,
-		not_null<Window::SessionController*> controller,
-		not_null<UserData*> self);
+		not_null<Window::SessionController*> controller);
 
 private:
 	void setupContent(not_null<Window::SessionController*> controller);
 
-	not_null<UserData*> _self;
 	//rpl::variable<bool> _canSaveChanges;
 	//Fn<void(FnMut<void()> done)> _save;
 
diff --git a/Telegram/SourceFiles/settings/settings_intro.cpp b/Telegram/SourceFiles/settings/settings_intro.cpp
index bb994caaf..7897ee5f1 100644
--- a/Telegram/SourceFiles/settings/settings_intro.cpp
+++ b/Telegram/SourceFiles/settings/settings_intro.cpp
@@ -345,7 +345,7 @@ void IntroWidget::resizeEvent(QResizeEvent *e) {
 }
 
 void IntroWidget::keyPressEvent(QKeyEvent *e) {
-	CodesFeedString(e->text());
+	CodesFeedString(nullptr, e->text());
 	return RpWidget::keyPressEvent(e);
 }
 
diff --git a/Telegram/SourceFiles/settings/settings_main.cpp b/Telegram/SourceFiles/settings/settings_main.cpp
index 861afef9a..413b64f89 100644
--- a/Telegram/SourceFiles/settings/settings_main.cpp
+++ b/Telegram/SourceFiles/settings/settings_main.cpp
@@ -55,6 +55,7 @@ void SetupLanguageButton(
 }
 
 void SetupSections(
+		not_null<Window::SessionController*> controller,
 		not_null<Ui::VerticalLayout*> container,
 		Fn<void(Type)> showOther) {
 	AddDivider(container);
@@ -71,8 +72,8 @@ void SetupSections(
 			icon
 		)->addClickHandler([=] { showOther(type); });
 	};
-	if (Auth().supportMode()) {
-		SetupSupport(container);
+	if (controller->session().supportMode()) {
+		SetupSupport(controller, container);
 
 		AddDivider(container);
 		AddSkip(container);
@@ -227,51 +228,50 @@ void SetupFaq(not_null<Ui::VerticalLayout*> container, bool icon) {
 	)->addClickHandler(OpenFaq);
 }
 
-void SetupHelp(not_null<Ui::VerticalLayout*> container) {
+void SetupHelp(
+		not_null<Window::SessionController*> controller,
+		not_null<Ui::VerticalLayout*> container) {
 	AddDivider(container);
 	AddSkip(container);
 
 	SetupFaq(container);
 
-	if (::Main::Session::Exists()) {
-		const auto button = AddButton(
-			container,
-			tr::lng_settings_ask_question(),
-			st::settingsSectionButton);
-		button->addClickHandler([=] {
-			const auto ready = crl::guard(button, [](const MTPUser &data) {
-				if (const auto user = Auth().data().processUser(data)) {
-					Ui::showPeerHistory(user, ShowAtUnreadMsgId);
-				}
-			});
-			const auto sure = crl::guard(button, [=] {
-				Auth().api().requestSupportContact(ready);
-			});
-			auto box = Box<ConfirmBox>(
-				tr::lng_settings_ask_sure(tr::now),
-				tr::lng_settings_ask_ok(tr::now),
-				tr::lng_settings_faq_button(tr::now),
-				sure,
-				OpenFaq);
-			box->setStrictCancel(true);
-			Ui::show(std::move(box));
+	const auto button = AddButton(
+		container,
+		tr::lng_settings_ask_question(),
+		st::settingsSectionButton);
+	button->addClickHandler([=] {
+		const auto ready = crl::guard(button, [=](const MTPUser &data) {
+			if (const auto user = controller->session().data().processUser(data)) {
+				Ui::showPeerHistory(user, ShowAtUnreadMsgId);
+			}
 		});
-	}
+		const auto sure = crl::guard(button, [=] {
+			controller->session().api().requestSupportContact(ready);
+		});
+		auto box = Box<ConfirmBox>(
+			tr::lng_settings_ask_sure(tr::now),
+			tr::lng_settings_ask_ok(tr::now),
+			tr::lng_settings_faq_button(tr::now),
+			sure,
+			OpenFaq);
+		box->setStrictCancel(true);
+		Ui::show(std::move(box));
+	});
 
 	AddSkip(container);
 }
 
 Main::Main(
 	QWidget *parent,
-	not_null<Window::SessionController*> controller,
-	not_null<UserData*> self)
+	not_null<Window::SessionController*> controller)
 : Section(parent)
-, _self(self) {
+, _controller(controller) {
 	setupContent(controller);
 }
 
 void Main::keyPressEvent(QKeyEvent *e) {
-	CodesFeedString(e->text());
+	CodesFeedString(&_controller->session(), e->text());
 	return Section::keyPressEvent(e);
 }
 
@@ -280,11 +280,11 @@ void Main::setupContent(not_null<Window::SessionController*> controller) {
 
 	const auto cover = content->add(object_ptr<Info::Profile::Cover>(
 		content,
-		_self,
+		controller->session().user(),
 		controller));
 	cover->setOnlineCount(rpl::single(0));
 
-	SetupSections(content, [=](Type type) {
+	SetupSections(controller, content, [=](Type type) {
 		_showOther.fire_copy(type);
 	});
 	if (HasInterfaceScale()) {
@@ -293,7 +293,7 @@ void Main::setupContent(not_null<Window::SessionController*> controller) {
 		SetupInterfaceScale(content);
 		AddSkip(content);
 	}
-	SetupHelp(content);
+	SetupHelp(controller, content);
 
 	Ui::ResizeFitChild(this, content);
 
diff --git a/Telegram/SourceFiles/settings/settings_main.h b/Telegram/SourceFiles/settings/settings_main.h
index 9724780f6..5a68bd197 100644
--- a/Telegram/SourceFiles/settings/settings_main.h
+++ b/Telegram/SourceFiles/settings/settings_main.h
@@ -32,10 +32,7 @@ void SetupFaq(
 
 class Main : public Section {
 public:
-	Main(
-		QWidget *parent,
-		not_null<Window::SessionController*> controller,
-		not_null<UserData*> self);
+	Main(QWidget *parent, not_null<Window::SessionController*> controller);
 
 	rpl::producer<Type> sectionShowOther() override;
 
@@ -45,7 +42,7 @@ protected:
 private:
 	void setupContent(not_null<Window::SessionController*> controller);
 
-	not_null<UserData*> _self;
+	const not_null<Window::SessionController*> _controller;
 	rpl::event_stream<Type> _showOther;
 
 };
diff --git a/Telegram/SourceFiles/settings/settings_notifications.cpp b/Telegram/SourceFiles/settings/settings_notifications.cpp
index 1465bcf95..71ded811c 100644
--- a/Telegram/SourceFiles/settings/settings_notifications.cpp
+++ b/Telegram/SourceFiles/settings/settings_notifications.cpp
@@ -18,6 +18,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "info/profile/info_profile_button.h"
 #include "storage/localstorage.h"
 #include "window/notifications_manager.h"
+#include "window/window_session_controller.h"
 #include "platform/platform_notifications_manager.h"
 #include "platform/platform_info.h"
 #include "mainwindow.h"
@@ -42,7 +43,9 @@ using ChangeType = Window::Notifications::ChangeType;
 
 class NotificationsCount : public Ui::RpWidget {
 public:
-	NotificationsCount(QWidget *parent);
+	NotificationsCount(
+		QWidget *parent,
+		not_null<Window::SessionController*> controller);
 
 	void setCount(int count);
 
@@ -72,6 +75,8 @@ private:
 	void prepareNotificationSampleLarge();
 	void prepareNotificationSampleUserpic();
 
+	const not_null<Window::SessionController*> _controller;
+
 	QPixmap _notificationSampleUserpic;
 	QPixmap _notificationSampleSmall;
 	QPixmap _notificationSampleLarge;
@@ -114,8 +119,11 @@ private:
 
 };
 
-NotificationsCount::NotificationsCount(QWidget *parent)
-: _chosenCorner(Global::NotificationsCorner())
+NotificationsCount::NotificationsCount(
+	QWidget *parent,
+	not_null<Window::SessionController*> controller)
+: _controller(controller)
+, _chosenCorner(Global::NotificationsCorner())
 , _oldCount(CurrentCount()) {
 	setMouseTracking(true);
 
@@ -176,7 +184,8 @@ void NotificationsCount::setCount(int count) {
 
 	if (count != Global::NotificationsCount()) {
 		Global::SetNotificationsCount(count);
-		Auth().notifications().settingsChanged().notify(ChangeType::MaxCount);
+		_controller->session().notifications().settingsChanged().notify(
+			ChangeType::MaxCount);
 		Local::writeUserSettings();
 	}
 }
@@ -340,7 +349,8 @@ void NotificationsCount::setOverCorner(Notify::ScreenCorner corner) {
 		_isOverCorner = true;
 		setCursor(style::cur_pointer);
 		Global::SetNotificationsDemoIsShown(true);
-		Auth().notifications().settingsChanged().notify(ChangeType::DemoIsShown);
+		_controller->session().notifications().settingsChanged().notify(
+			ChangeType::DemoIsShown);
 	}
 	_overCorner = corner;
 
@@ -375,10 +385,10 @@ void NotificationsCount::clearOverCorner() {
 		_isOverCorner = false;
 		setCursor(style::cur_default);
 		Global::SetNotificationsDemoIsShown(false);
-		Auth().notifications().settingsChanged().notify(ChangeType::DemoIsShown);
+		_controller->session().notifications().settingsChanged().notify(ChangeType::DemoIsShown);
 
-		for_const (auto &samples, _cornerSamples) {
-			for_const (auto widget, samples) {
+		for_const (const auto &samples, _cornerSamples) {
+			for_const (const auto widget, samples) {
 				widget->hideFast();
 			}
 		}
@@ -392,13 +402,17 @@ void NotificationsCount::mousePressEvent(QMouseEvent *e) {
 
 void NotificationsCount::mouseReleaseEvent(QMouseEvent *e) {
 	auto isDownCorner = base::take(_isDownCorner);
-	if (isDownCorner && _isOverCorner && _downCorner == _overCorner && _downCorner != _chosenCorner) {
+	if (isDownCorner
+		&& _isOverCorner
+		&& _downCorner == _overCorner
+		&& _downCorner != _chosenCorner) {
 		_chosenCorner = _downCorner;
 		update();
 
 		if (_chosenCorner != Global::NotificationsCorner()) {
 			Global::SetNotificationsCorner(_chosenCorner);
-			Auth().notifications().settingsChanged().notify(ChangeType::Corner);
+			_controller->session().notifications().settingsChanged().notify(
+				ChangeType::Corner);
 			Local::writeUserSettings();
 		}
 	}
@@ -487,7 +501,9 @@ void NotificationsCount::SampleWidget::destroyDelayed() {
 #endif // Q_OS_LINUX32 || Q_OS_LINUX64
 }
 
-void SetupAdvancedNotifications(not_null<Ui::VerticalLayout*> container) {
+void SetupAdvancedNotifications(
+		not_null<Window::SessionController*> controller,
+		not_null<Ui::VerticalLayout*> container) {
 	AddSkip(container, st::settingsCheckboxesSkip);
 	AddDivider(container);
 	AddSkip(container, st::settingsCheckboxesSkip);
@@ -495,7 +511,7 @@ void SetupAdvancedNotifications(not_null<Ui::VerticalLayout*> container) {
 	AddSkip(container, st::settingsCheckboxesSkip);
 
 	const auto position = container->add(
-		object_ptr<NotificationsCount>(container));
+		object_ptr<NotificationsCount>(container, controller));
 
 	AddSkip(container, st::settingsCheckboxesSkip);
 	AddSubsectionTitle(container, tr::lng_settings_notifications_count());
@@ -514,9 +530,12 @@ void SetupAdvancedNotifications(not_null<Ui::VerticalLayout*> container) {
 	AddSkip(container, st::settingsCheckboxesSkip);
 }
 
-void SetupNotificationsContent(not_null<Ui::VerticalLayout*> container) {
+void SetupNotificationsContent(
+		not_null<Window::SessionController*> controller,
+		not_null<Ui::VerticalLayout*> container) {
 	AddSubsectionTitle(container, tr::lng_settings_notify_title());
 
+	const auto session = &controller->session();
 	const auto checkbox = [&](const QString &label, bool checked) {
 		return object_ptr<Ui::Checkbox>(
 			container,
@@ -556,10 +575,10 @@ void SetupNotificationsContent(not_null<Ui::VerticalLayout*> container) {
 
 	const auto muted = addCheckbox(
 		tr::lng_settings_include_muted(tr::now),
-		Auth().settings().includeMutedCounter());
+		session->settings().includeMutedCounter());
 	const auto count = addCheckbox(
 		tr::lng_settings_count_unread(tr::now),
-		Auth().settings().countUnreadMessages());
+		session->settings().countUnreadMessages());
 
 
 	AddSkip(container, st::settingsCheckboxesSkip);
@@ -569,32 +588,32 @@ void SetupNotificationsContent(not_null<Ui::VerticalLayout*> container) {
 
 	const auto joined = addCheckbox(
 		tr::lng_settings_events_joined(tr::now),
-		!Auth().api().contactSignupSilentCurrent().value_or(false));
-	Auth().api().contactSignupSilent(
+		!session->api().contactSignupSilentCurrent().value_or(false));
+	session->api().contactSignupSilent(
 	) | rpl::start_with_next([=](bool silent) {
 		joined->setChecked(!silent);
 	}, joined->lifetime());
 	joined->checkedChanges(
-	) | rpl::filter([](bool enabled) {
-		const auto silent = Auth().api().contactSignupSilentCurrent();
+	) | rpl::filter([=](bool enabled) {
+		const auto silent = session->api().contactSignupSilentCurrent();
 		return (enabled == silent.value_or(false));
 	}) | rpl::start_with_next([=](bool enabled) {
-		Auth().api().saveContactSignupSilent(!enabled);
+		session->api().saveContactSignupSilent(!enabled);
 	}, joined->lifetime());
 
 	const auto pinned = addCheckbox(
 		tr::lng_settings_events_pinned(tr::now),
-		Auth().settings().notifyAboutPinned());
-	Auth().settings().notifyAboutPinnedChanges(
+		session->settings().notifyAboutPinned());
+	session->settings().notifyAboutPinnedChanges(
 	) | rpl::start_with_next([=](bool notify) {
 		pinned->setChecked(notify);
 	}, pinned->lifetime());
 	pinned->checkedChanges(
-	) | rpl::filter([](bool notify) {
-		return (notify != Auth().settings().notifyAboutPinned());
+	) | rpl::filter([=](bool notify) {
+		return (notify != session->settings().notifyAboutPinned());
 	}) | rpl::start_with_next([=](bool notify) {
-		Auth().settings().setNotifyAboutPinned(notify);
-		Auth().saveSettingsDelayed();
+		session->settings().setNotifyAboutPinned(notify);
+		session->saveSettingsDelayed();
 	}, joined->lifetime());
 
 	const auto nativeText = [&] {
@@ -629,7 +648,7 @@ void SetupNotificationsContent(not_null<Ui::VerticalLayout*> container) {
 		? advancedSlide->entity()
 		: nullptr;
 	if (advancedWrap) {
-		SetupAdvancedNotifications(advancedWrap);
+		SetupAdvancedNotifications(controller, advancedWrap);
 	}
 
 	if (!name->entity()->checked()) {
@@ -644,9 +663,9 @@ void SetupNotificationsContent(not_null<Ui::VerticalLayout*> container) {
 	}
 
 	using Change = Window::Notifications::ChangeType;
-	const auto changed = [](Change change) {
+	const auto changed = [=](Change change) {
 		Local::writeUserSettings();
-		Auth().notifications().settingsChanged().notify(change);
+		session->notifications().settingsChanged().notify(change);
 	};
 	desktop->checkedChanges(
 	) | rpl::filter([](bool checked) {
@@ -695,23 +714,23 @@ void SetupNotificationsContent(not_null<Ui::VerticalLayout*> container) {
 	}, sound->lifetime());
 
 	muted->checkedChanges(
-	) | rpl::filter([](bool checked) {
-		return (checked != Auth().settings().includeMutedCounter());
+	) | rpl::filter([=](bool checked) {
+		return (checked != session->settings().includeMutedCounter());
 	}) | rpl::start_with_next([=](bool checked) {
-		Auth().settings().setIncludeMutedCounter(checked);
+		session->settings().setIncludeMutedCounter(checked);
 		changed(Change::IncludeMuted);
 	}, muted->lifetime());
 
 	count->checkedChanges(
-	) | rpl::filter([](bool checked) {
-		return (checked != Auth().settings().countUnreadMessages());
+	) | rpl::filter([=](bool checked) {
+		return (checked != session->settings().countUnreadMessages());
 	}) | rpl::start_with_next([=](bool checked) {
-		Auth().settings().setCountUnreadMessages(checked);
+		session->settings().setCountUnreadMessages(checked);
 		changed(Change::CountMessages);
 	}, count->lifetime());
 
 	base::ObservableViewer(
-		Auth().notifications().settingsChanged()
+		session->notifications().settingsChanged()
 	) | rpl::start_with_next([=](Change change) {
 		if (change == Change::DesktopEnabled) {
 			desktop->setChecked(Global::DesktopNotify());
@@ -734,7 +753,7 @@ void SetupNotificationsContent(not_null<Ui::VerticalLayout*> container) {
 			Global::SetNativeNotifications(checked);
 			Local::writeUserSettings();
 
-			Auth().notifications().createManager();
+			session->notifications().createManager();
 
 			if (advancedSlide) {
 				advancedSlide->toggle(
@@ -745,11 +764,13 @@ void SetupNotificationsContent(not_null<Ui::VerticalLayout*> container) {
 	}
 }
 
-void SetupNotifications(not_null<Ui::VerticalLayout*> container) {
+void SetupNotifications(
+		not_null<Window::SessionController*> controller,
+		not_null<Ui::VerticalLayout*> container) {
 	AddSkip(container, st::settingsCheckboxesSkip);
 
 	auto wrap = object_ptr<Ui::VerticalLayout>(container);
-	SetupNotificationsContent(wrap.data());
+	SetupNotificationsContent(controller, wrap.data());
 
 	container->add(object_ptr<Ui::OverrideMargins>(
 		container,
@@ -760,16 +781,18 @@ void SetupNotifications(not_null<Ui::VerticalLayout*> container) {
 
 } // namespace
 
-Notifications::Notifications(QWidget *parent, not_null<UserData*> self)
-: Section(parent)
-, _self(self) {
-	setupContent();
+Notifications::Notifications(
+	QWidget *parent,
+	not_null<Window::SessionController*> controller)
+: Section(parent) {
+	setupContent(controller);
 }
 
-void Notifications::setupContent() {
+void Notifications::setupContent(
+		not_null<Window::SessionController*> controller) {
 	const auto content = Ui::CreateChild<Ui::VerticalLayout>(this);
 
-	SetupNotifications(content);
+	SetupNotifications(controller, content);
 
 	Ui::ResizeFitChild(this, content);
 }
diff --git a/Telegram/SourceFiles/settings/settings_notifications.h b/Telegram/SourceFiles/settings/settings_notifications.h
index 4bcdaba51..38327de92 100644
--- a/Telegram/SourceFiles/settings/settings_notifications.h
+++ b/Telegram/SourceFiles/settings/settings_notifications.h
@@ -13,12 +13,12 @@ namespace Settings {
 
 class Notifications : public Section {
 public:
-	Notifications(QWidget *parent, not_null<UserData*> self);
+	Notifications(
+		QWidget *parent,
+		not_null<Window::SessionController*> controller);
 
 private:
-	void setupContent();
-
-	not_null<UserData*> _self;
+	void setupContent(not_null<Window::SessionController*> controller);
 
 };
 
diff --git a/Telegram/SourceFiles/settings/settings_privacy_controllers.cpp b/Telegram/SourceFiles/settings/settings_privacy_controllers.cpp
index 7ea0e13d5..5ebfd852c 100644
--- a/Telegram/SourceFiles/settings/settings_privacy_controllers.cpp
+++ b/Telegram/SourceFiles/settings/settings_privacy_controllers.cpp
@@ -29,6 +29,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "ui/wrap/vertical_layout.h"
 #include "ui/image/image_prepare.h"
 #include "window/section_widget.h"
+#include "window/window_session_controller.h"
 #include "boxes/peer_list_controllers.h"
 #include "boxes/confirm_box.h"
 #include "settings/settings_privacy_security.h"
@@ -154,6 +155,11 @@ AdminLog::OwnedItem GenerateForwardedItem(
 
 } // namespace
 
+BlockedBoxController::BlockedBoxController(
+	not_null<Window::SessionController*> window)
+: _window(window) {
+}
+
 void BlockedBoxController::prepare() {
 	delegate()->peerListSetTitle(tr::lng_blocked_list_title());
 	setDescriptionText(tr::lng_contacts_loading(tr::now));
@@ -166,7 +172,7 @@ void BlockedBoxController::prepare() {
 	}));
 
 	_loadRequestId = -1;
-	Auth().api().blockedUsersSlice(
+	_window->session().api().blockedUsersSlice(
 	) | rpl::take(
 		1
 	) | rpl::start_with_next([=](const ApiWrap::BlockedUsersSlice &result) {
@@ -193,8 +199,8 @@ void BlockedBoxController::loadMoreRows() {
 	)).done([=](const MTPcontacts_Blocked &result) {
 		_loadRequestId = 0;
 
-		auto handleContactsBlocked = [](auto &list) {
-			Auth().data().processUsers(list.vusers());
+		auto handleContactsBlocked = [&](auto &list) {
+			_window->session().data().processUsers(list.vusers());
 			return list.vblocked().v;
 		};
 		switch (result.type()) {
@@ -222,7 +228,7 @@ void BlockedBoxController::rowActionClicked(not_null<PeerListRow*> row) {
 	auto user = row->peer()->asUser();
 	Expects(user != nullptr);
 
-	Auth().api().unblockUser(user);
+	_window->session().api().unblockUser(user);
 }
 
 void BlockedBoxController::receivedUsers(const QVector<MTPContactBlocked> &result) {
@@ -233,7 +239,7 @@ void BlockedBoxController::receivedUsers(const QVector<MTPContactBlocked> &resul
 	_offset += result.size();
 	for (const auto &item : result) {
 		item.match([&](const MTPDcontactBlocked &data) {
-			if (const auto user = Auth().data().userLoaded(data.vuser_id().v)) {
+			if (const auto user = _window->session().data().userLoaded(data.vuser_id().v)) {
 				appendRow(user);
 				user->setIsBlocked(true);
 			}
@@ -254,11 +260,13 @@ void BlockedBoxController::handleBlockedEvent(not_null<UserData*> user) {
 	}
 }
 
-void BlockedBoxController::BlockNewUser() {
+void BlockedBoxController::BlockNewUser(
+		not_null<Window::SessionController*> window) {
 	auto controller = std::make_unique<BlockUserBoxController>();
-	auto initBox = [controller = controller.get()](not_null<PeerListBox*> box) {
-		controller->setBlockUserCallback([box](not_null<UserData*> user) {
-			Auth().api().blockUser(user);
+	auto initBox = [=, controller = controller.get()](
+			not_null<PeerListBox*> box) {
+		controller->setBlockUserCallback([=](not_null<UserData*> user) {
+			window->session().api().blockUser(user);
 			box->closeBox();
 		});
 		box->addButton(tr::lng_cancel(), [box] { box->closeBox(); });
@@ -346,6 +354,11 @@ rpl::producer<QString> PhoneNumberPrivacyController::exceptionsDescription() {
 	return tr::lng_edit_privacy_phone_number_exceptions();
 }
 
+LastSeenPrivacyController::LastSeenPrivacyController(
+	not_null<::Main::Session*> session)
+: _session(session) {
+}
+
 ApiWrap::Privacy::Key LastSeenPrivacyController::key() {
 	return Key::LastSeen;
 }
@@ -391,14 +404,15 @@ rpl::producer<QString> LastSeenPrivacyController::exceptionsDescription() {
 }
 
 void LastSeenPrivacyController::confirmSave(bool someAreDisallowed, FnMut<void()> saveCallback) {
-	if (someAreDisallowed && !Auth().settings().lastSeenWarningSeen()) {
+	if (someAreDisallowed && !_session->settings().lastSeenWarningSeen()) {
+		const auto session = _session;
 		auto weakBox = std::make_shared<QPointer<ConfirmBox>>();
-		auto callback = [weakBox, saveCallback = std::move(saveCallback)]() mutable {
+		auto callback = [=, saveCallback = std::move(saveCallback)]() mutable {
 			if (auto box = *weakBox) {
 				box->closeBox();
 			}
 			saveCallback();
-			Auth().settings().setLastSeenWarningSeen(true);
+			session->settings().setLastSeenWarningSeen(true);
 			Local::writeUserSettings();
 		};
 		auto box = Box<ConfirmBox>(
@@ -494,6 +508,7 @@ rpl::producer<QString> CallsPrivacyController::exceptionsDescription() {
 }
 
 object_ptr<Ui::RpWidget> CallsPrivacyController::setupBelowWidget(
+		not_null<Window::SessionController*> controller,
 		not_null<QWidget*> parent) {
 	auto result = object_ptr<Ui::VerticalLayout>(parent);
 	const auto content = result.data();
@@ -502,6 +517,7 @@ object_ptr<Ui::RpWidget> CallsPrivacyController::setupBelowWidget(
 	AddSkip(content);
 	AddSubsectionTitle(content, tr::lng_settings_calls_peer_to_peer_title());
 	Settings::AddPrivacyButton(
+		controller,
 		content,
 		tr::lng_settings_calls_peer_to_peer_button(),
 		ApiWrap::Privacy::Key::CallsPeer2Peer,
@@ -563,6 +579,11 @@ rpl::producer<QString> CallsPeer2PeerPrivacyController::exceptionsDescription()
 	return tr::lng_edit_privacy_calls_p2p_exceptions();
 }
 
+ForwardsPrivacyController::ForwardsPrivacyController(
+	not_null<::Main::Session*> session)
+: _session(session) {
+}
+
 ApiWrap::Privacy::Key ForwardsPrivacyController::key() {
 	return Key::Forwards;
 }
@@ -613,7 +634,7 @@ object_ptr<Ui::RpWidget> ForwardsPrivacyController::setupAboveWidget(
 
 	auto message = GenerateForwardedItem(
 		delegate(),
-		Auth().data().history(
+		_session->data().history(
 			peerFromUser(PeerData::kServiceNotificationsId)),
 		tr::lng_edit_privacy_forwards_sample_message(tr::now));
 	const auto view = message.get();
diff --git a/Telegram/SourceFiles/settings/settings_privacy_controllers.h b/Telegram/SourceFiles/settings/settings_privacy_controllers.h
index 83e25b4f5..669a48577 100644
--- a/Telegram/SourceFiles/settings/settings_privacy_controllers.h
+++ b/Telegram/SourceFiles/settings/settings_privacy_controllers.h
@@ -16,12 +16,15 @@ namespace Settings {
 
 class BlockedBoxController : public PeerListController, private base::Subscriber, private MTP::Sender {
 public:
+	explicit BlockedBoxController(
+		not_null<Window::SessionController*> window);
+
 	void prepare() override;
 	void rowClicked(not_null<PeerListRow*> row) override;
 	void rowActionClicked(not_null<PeerListRow*> row) override;
 	void loadMoreRows() override;
 
-	static void BlockNewUser();
+	static void BlockNewUser(not_null<Window::SessionController*> window);
 
 private:
 	void receivedUsers(const QVector<MTPContactBlocked> &result);
@@ -31,6 +34,8 @@ private:
 	bool prependRow(not_null<UserData*> user);
 	std::unique_ptr<PeerListRow> createRow(not_null<UserData*> user) const;
 
+	const not_null<Window::SessionController*> _window;
+
 	int _offset = 0;
 	mtpRequestId _loadRequestId = 0;
 	bool _allLoaded = false;
@@ -60,6 +65,8 @@ public:
 	using Option = EditPrivacyBox::Option;
 	using Exception = EditPrivacyBox::Exception;
 
+	explicit LastSeenPrivacyController(not_null<::Main::Session*> session);
+
 	Key key() override;
 	MTPInputPrivacyKey apiKey() override;
 
@@ -75,6 +82,9 @@ public:
 		bool someAreDisallowed,
 		FnMut<void()> saveCallback) override;
 
+private:
+	const not_null<::Main::Session*> _session;
+
 };
 
 class GroupsInvitePrivacyController : public EditPrivacyController {
@@ -111,6 +121,7 @@ public:
 	rpl::producer<QString> exceptionsDescription() override;
 
 	object_ptr<Ui::RpWidget> setupBelowWidget(
+		not_null<Window::SessionController*> controller,
 		not_null<QWidget*> parent) override;
 
 };
@@ -141,6 +152,8 @@ public:
 	using Option = EditPrivacyBox::Option;
 	using Exception = EditPrivacyBox::Exception;
 
+	explicit ForwardsPrivacyController(not_null<::Main::Session*> session);
+
 	Key key() override;
 	MTPInputPrivacyKey apiKey() override;
 
@@ -166,6 +179,8 @@ private:
 		not_null<HistoryView::Element*> view,
 		Option value);
 
+	const not_null<::Main::Session*> _session;
+
 };
 
 class ProfilePhotoPrivacyController : public EditPrivacyController {
diff --git a/Telegram/SourceFiles/settings/settings_privacy_security.cpp b/Telegram/SourceFiles/settings/settings_privacy_security.cpp
index 34b60af0b..bd48556aa 100644
--- a/Telegram/SourceFiles/settings/settings_privacy_security.cpp
+++ b/Telegram/SourceFiles/settings/settings_privacy_security.cpp
@@ -31,6 +31,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "data/data_chat.h"
 #include "data/data_channel.h"
 #include "main/main_session.h"
+#include "window/window_session_controller.h"
 #include "apiwrap.h"
 #include "styles/style_settings.h"
 #include "styles/style_boxes.h"
@@ -72,9 +73,11 @@ QString PrivacyBase(Privacy::Key key, Privacy::Option option) {
 	}
 }
 
-rpl::producer<QString> PrivacyString(Privacy::Key key) {
-	Auth().api().reloadPrivacy(key);
-	return Auth().api().privacyValue(
+rpl::producer<QString> PrivacyString(
+		not_null<::Main::Session*> session,
+		Privacy::Key key) {
+	session->api().reloadPrivacy(key);
+	return session->api().privacyValue(
 		key
 	) | rpl::map([=](const Privacy &value) {
 		auto add = QStringList();
@@ -93,20 +96,23 @@ rpl::producer<QString> PrivacyString(Privacy::Key key) {
 	});
 }
 
-rpl::producer<int> BlockedUsersCount() {
-	Auth().api().reloadBlockedUsers();
-	return Auth().api().blockedUsersSlice(
+rpl::producer<int> BlockedUsersCount(not_null<::Main::Session*> session) {
+	session->api().reloadBlockedUsers();
+	return session->api().blockedUsersSlice(
 	) | rpl::map([=](const ApiWrap::BlockedUsersSlice &data) {
 		return data.total;
 	});
 }
 
-void SetupPrivacy(not_null<Ui::VerticalLayout*> container) {
+void SetupPrivacy(
+		not_null<Window::SessionController*> controller,
+		not_null<Ui::VerticalLayout*> container) {
 	AddSkip(container, st::settingsPrivacySkip);
 	AddSubsectionTitle(container, tr::lng_settings_privacy_title());
 
+	const auto session = &controller->session();
 	auto count = rpl::combine(
-		BlockedUsersCount(),
+		BlockedUsersCount(session),
 		tr::lng_settings_no_blocked_users()
 	) | rpl::map([](int count, const QString &none) {
 		return count ? QString::number(count) : none;
@@ -116,17 +122,17 @@ void SetupPrivacy(not_null<Ui::VerticalLayout*> container) {
 		tr::lng_settings_blocked_users(),
 		std::move(count),
 		st::settingsButton
-	)->addClickHandler([] {
-		const auto initBox = [](not_null<PeerListBox*> box) {
+	)->addClickHandler([=] {
+		const auto initBox = [=](not_null<PeerListBox*> box) {
 			box->addButton(tr::lng_close(), [=] {
 				box->closeBox();
 			});
-			box->addLeftButton(tr::lng_blocked_list_add(), [] {
-				BlockedBoxController::BlockNewUser();
+			box->addLeftButton(tr::lng_blocked_list_add(), [=] {
+				BlockedBoxController::BlockNewUser(controller);
 			});
 		};
 		Ui::show(Box<PeerListBox>(
-			std::make_unique<BlockedBoxController>(),
+			std::make_unique<BlockedBoxController>(controller),
 			initBox));
 	});
 
@@ -134,8 +140,13 @@ void SetupPrivacy(not_null<Ui::VerticalLayout*> container) {
 	const auto add = [&](
 			rpl::producer<QString> label,
 			Key key,
-			auto controller) {
-		AddPrivacyButton(container, std::move(label), key, controller);
+			auto controllerFactory) {
+		AddPrivacyButton(
+			controller,
+			container,
+			std::move(label),
+			key,
+			controllerFactory);
 	};
 	add(
 		tr::lng_settings_phone_number_privacy(),
@@ -144,11 +155,11 @@ void SetupPrivacy(not_null<Ui::VerticalLayout*> container) {
 	add(
 		tr::lng_settings_last_seen(),
 		Key::LastSeen,
-		[] { return std::make_unique<LastSeenPrivacyController>(); });
+		[=] { return std::make_unique<LastSeenPrivacyController>(session); });
 	add(
 		tr::lng_settings_forwards_privacy(),
 		Key::Forwards,
-		[] { return std::make_unique<ForwardsPrivacyController>(); });
+		[=] { return std::make_unique<ForwardsPrivacyController>(session); });
 	add(
 		tr::lng_settings_profile_photo_privacy(),
 		Key::ProfilePhoto,
@@ -175,7 +186,9 @@ not_null<Ui::SlideWrap<Ui::PlainShadow>*> AddSeparator(
 			st::settingsSeparatorPadding));
 }
 
-void SetupLocalPasscode(not_null<Ui::VerticalLayout*> container) {
+void SetupLocalPasscode(
+		not_null<Window::SessionController*> controller,
+		not_null<Ui::VerticalLayout*> container) {
 	AddSkip(container);
 	AddSubsectionTitle(container, tr::lng_settings_passcode_title());
 
@@ -195,8 +208,8 @@ void SetupLocalPasscode(not_null<Ui::VerticalLayout*> container) {
 			container,
 			std::move(text),
 			st::settingsButton)
-	)->addClickHandler([] {
-		Ui::show(Box<PasscodeBox>(false));
+	)->addClickHandler([=] {
+		Ui::show(Box<PasscodeBox>(&controller->session(), false));
 	});
 
 	const auto wrap = container->add(
@@ -209,8 +222,8 @@ void SetupLocalPasscode(not_null<Ui::VerticalLayout*> container) {
 			inner,
 			tr::lng_settings_passcode_disable(),
 			st::settingsButton)
-	)->addClickHandler([] {
-		Ui::show(Box<PasscodeBox>(true));
+	)->addClickHandler([=] {
+		Ui::show(Box<PasscodeBox>(&controller->session(), true));
 	});
 
 	const auto label = Platform::LastUserInputTimeSupported()
@@ -229,8 +242,8 @@ void SetupLocalPasscode(not_null<Ui::VerticalLayout*> container) {
 		label(),
 		std::move(value),
 		st::settingsButton
-	)->addClickHandler([] {
-		Ui::show(Box<AutoLockBox>());
+	)->addClickHandler([=] {
+		Ui::show(Box<AutoLockBox>(&controller->session()));
 	});
 
 	wrap->toggleOn(base::duplicate(has));
@@ -238,7 +251,9 @@ void SetupLocalPasscode(not_null<Ui::VerticalLayout*> container) {
 	AddSkip(container);
 }
 
-void SetupCloudPassword(not_null<Ui::VerticalLayout*> container) {
+void SetupCloudPassword(
+		not_null<Window::SessionController*> controller,
+		not_null<Ui::VerticalLayout*> container) {
 	using namespace rpl::mappers;
 	using State = Core::CloudPasswordState;
 
@@ -246,15 +261,16 @@ void SetupCloudPassword(not_null<Ui::VerticalLayout*> container) {
 	AddSkip(container);
 	AddSubsectionTitle(container, tr::lng_settings_password_title());
 
+	const auto session = &controller->session();
 	auto has = rpl::single(
 		false
-	) | rpl::then(Auth().api().passwordState(
+	) | rpl::then(controller->session().api().passwordState(
 	) | rpl::map([](const State &state) {
 		return state.request
 			|| state.unknownAlgorithm
 			|| !state.unconfirmedPattern.isEmpty();
 	})) | rpl::distinct_until_changed();
-	auto pattern = Auth().api().passwordState(
+	auto pattern = session->api().passwordState(
 	) | rpl::map([](const State &state) {
 		return state.unconfirmedPattern;
 	});
@@ -318,9 +334,9 @@ void SetupCloudPassword(not_null<Ui::VerticalLayout*> container) {
 	) | rpl::map(
 		!_1
 	))->setDuration(0);
-	change->entity()->addClickHandler([] {
-		if (CheckEditCloudPassword()) {
-			Ui::show(EditCloudPasswordBox(&Auth()));
+	change->entity()->addClickHandler([=] {
+		if (CheckEditCloudPassword(session)) {
+			Ui::show(EditCloudPasswordBox(session));
 		} else {
 			Ui::show(CloudPasswordAppOutdatedBox());
 		}
@@ -338,8 +354,8 @@ void SetupCloudPassword(not_null<Ui::VerticalLayout*> container) {
 	) | rpl::then(rpl::duplicate(
 		unconfirmed
 	)))->setDuration(0);
-	confirm->entity()->addClickHandler([] {
-		const auto state = Auth().api().passwordStateCurrent();
+	confirm->entity()->addClickHandler([=] {
+		const auto state = session->api().passwordStateCurrent();
 		if (!state) {
 			return;
 		}
@@ -347,22 +363,22 @@ void SetupCloudPassword(not_null<Ui::VerticalLayout*> container) {
 
 		std::move(
 			validation.reloadRequests
-		) | rpl::start_with_next([] {
-			Auth().api().reloadPasswordState();
+		) | rpl::start_with_next([=] {
+			session->api().reloadPasswordState();
 		}, validation.box->lifetime());
 
 		std::move(
 			validation.cancelRequests
-		) | rpl::start_with_next([] {
-			Auth().api().clearUnconfirmedPassword();
+		) | rpl::start_with_next([=] {
+			session->api().clearUnconfirmedPassword();
 		}, validation.box->lifetime());
 
 		Ui::show(std::move(validation.box));
 	});
 
-	const auto remove = [] {
-		if (CheckEditCloudPassword()) {
-			RemoveCloudPassword();
+	const auto remove = [=] {
+		if (CheckEditCloudPassword(session)) {
+			RemoveCloudPassword(session);
 		} else {
 			Ui::show(CloudPasswordAppOutdatedBox());
 		}
@@ -395,7 +411,7 @@ void SetupCloudPassword(not_null<Ui::VerticalLayout*> container) {
 
 	const auto reloadOnActivation = [=](Qt::ApplicationState state) {
 		if (label->toggled() && state == Qt::ApplicationActive) {
-			Auth().api().reloadPasswordState();
+			controller->session().api().reloadPasswordState();
 		}
 	};
 	QObject::connect(
@@ -404,19 +420,23 @@ void SetupCloudPassword(not_null<Ui::VerticalLayout*> container) {
 		label,
 		reloadOnActivation);
 
-	Auth().api().reloadPasswordState();
+	session->api().reloadPasswordState();
 
 	AddSkip(container);
 }
 
-void SetupSelfDestruction(not_null<Ui::VerticalLayout*> container) {
+void SetupSelfDestruction(
+		not_null<Window::SessionController*> controller,
+		not_null<Ui::VerticalLayout*> container) {
 	AddDivider(container);
 	AddSkip(container);
 	AddSubsectionTitle(container, tr::lng_settings_destroy_title());
 
-	Auth().api().reloadSelfDestruct();
-	const auto label = [] {
-		return Auth().api().selfDestructValue(
+	const auto session = &controller->session();
+
+	session->api().reloadSelfDestruct();
+	const auto label = [&] {
+		return session->api().selfDestructValue(
 		) | rpl::map(
 			SelfDestructionBox::DaysLabel
 		);
@@ -427,14 +447,16 @@ void SetupSelfDestruction(not_null<Ui::VerticalLayout*> container) {
 		tr::lng_settings_destroy_if(),
 		label(),
 		st::settingsButton
-	)->addClickHandler([] {
-		Ui::show(Box<SelfDestructionBox>(Auth().api().selfDestructValue()));
+	)->addClickHandler([=] {
+		Ui::show(Box<SelfDestructionBox>(session->api().selfDestructValue()));
 	});
 
 	AddSkip(container);
 }
 
-void SetupSessionsList(not_null<Ui::VerticalLayout*> container) {
+void SetupSessionsList(
+		not_null<Window::SessionController*> controller,
+		not_null<Ui::VerticalLayout*> container) {
 	AddSkip(container);
 	AddSubsectionTitle(container, tr::lng_settings_sessions_title());
 
@@ -463,8 +485,8 @@ int ExceptionUsersCount(const std::vector<not_null<PeerData*>> &exceptions) {
 	return ranges::accumulate(exceptions, 0, add);
 }
 
-bool CheckEditCloudPassword() {
-	const auto current = Auth().api().passwordStateCurrent();
+bool CheckEditCloudPassword(not_null<::Main::Session*> session) {
+	const auto current = session->api().passwordStateCurrent();
 	Assert(current.has_value());
 
 	if (!current->unknownAlgorithm
@@ -479,7 +501,9 @@ object_ptr<BoxContent> EditCloudPasswordBox(not_null<Main::Session*> session) {
 	const auto current = session->api().passwordStateCurrent();
 	Assert(current.has_value());
 
-	auto result = Box<PasscodeBox>(PasscodeBox::CloudFields::From(*current));
+	auto result = Box<PasscodeBox>(
+		session,
+		PasscodeBox::CloudFields::From(*current));
 	const auto box = result.data();
 
 	rpl::merge(
@@ -497,29 +521,29 @@ object_ptr<BoxContent> EditCloudPasswordBox(not_null<Main::Session*> session) {
 	return std::move(result);
 }
 
-void RemoveCloudPassword() {
-	const auto current = Auth().api().passwordStateCurrent();
+void RemoveCloudPassword(not_null<::Main::Session*> session) {
+	const auto current = session->api().passwordStateCurrent();
 	Assert(current.has_value());
 
 	if (!current->request) {
-		Auth().api().clearUnconfirmedPassword();
+		session->api().clearUnconfirmedPassword();
 		return;
 	}
 	auto fields = PasscodeBox::CloudFields::From(*current);
 	fields.turningOff = true;
-	const auto box = Ui::show(Box<PasscodeBox>(fields));
+	const auto box = Ui::show(Box<PasscodeBox>(session, fields));
 
 	rpl::merge(
 		box->newPasswordSet(
 		) | rpl::map([] { return rpl::empty_value(); }),
 		box->passwordReloadNeeded()
 	) | rpl::start_with_next([=] {
-		Auth().api().reloadPasswordState();
+		session->api().reloadPasswordState();
 	}, box->lifetime());
 
 	box->clearUnconfirmedPassword(
 	) | rpl::start_with_next([=] {
-		Auth().api().clearUnconfirmedPassword();
+		session->api().clearUnconfirmedPassword();
 	}, box->lifetime());
 }
 
@@ -538,43 +562,47 @@ object_ptr<BoxContent> CloudPasswordAppOutdatedBox() {
 }
 
 void AddPrivacyButton(
+		not_null<Window::SessionController*> controller,
 		not_null<Ui::VerticalLayout*> container,
 		rpl::producer<QString> label,
 		Privacy::Key key,
-		Fn<std::unique_ptr<EditPrivacyController>()> controller) {
+		Fn<std::unique_ptr<EditPrivacyController>()> controllerFactory) {
 	const auto shower = Ui::CreateChild<rpl::lifetime>(container.get());
+	const auto session = &controller->session();
 	AddButtonWithLabel(
 		container,
 		std::move(label),
-		PrivacyString(key),
+		PrivacyString(session, key),
 		st::settingsButton
 	)->addClickHandler([=] {
-		*shower = Auth().api().privacyValue(
+		*shower = session->api().privacyValue(
 			key
 		) | rpl::take(
 			1
 		) | rpl::start_with_next([=](const Privacy &value) {
 			Ui::show(
-				Box<EditPrivacyBox>(controller(), value),
+				Box<EditPrivacyBox>(controller, controllerFactory(), value),
 				LayerOption::KeepOther);
 		});
 	});
 }
 
-PrivacySecurity::PrivacySecurity(QWidget *parent, not_null<UserData*> self)
-: Section(parent)
-, _self(self) {
-	setupContent();
+PrivacySecurity::PrivacySecurity(
+	QWidget *parent,
+	not_null<Window::SessionController*> controller)
+: Section(parent) {
+	setupContent(controller);
 }
 
-void PrivacySecurity::setupContent() {
+void PrivacySecurity::setupContent(
+		not_null<Window::SessionController*> controller) {
 	const auto content = Ui::CreateChild<Ui::VerticalLayout>(this);
 
-	SetupPrivacy(content);
-	SetupSessionsList(content);
-	SetupLocalPasscode(content);
-	SetupCloudPassword(content);
-	SetupSelfDestruction(content);
+	SetupPrivacy(controller, content);
+	SetupSessionsList(controller, content);
+	SetupLocalPasscode(controller, content);
+	SetupCloudPassword(controller, content);
+	SetupSelfDestruction(controller, content);
 
 	Ui::ResizeFitChild(this, content);
 }
diff --git a/Telegram/SourceFiles/settings/settings_privacy_security.h b/Telegram/SourceFiles/settings/settings_privacy_security.h
index 0023ab44b..13291ead7 100644
--- a/Telegram/SourceFiles/settings/settings_privacy_security.h
+++ b/Telegram/SourceFiles/settings/settings_privacy_security.h
@@ -16,26 +16,27 @@ namespace Settings {
 
 int ExceptionUsersCount(const std::vector<not_null<PeerData*>> &exceptions);
 
-bool CheckEditCloudPassword();
+bool CheckEditCloudPassword(not_null<::Main::Session*> session);
 object_ptr<BoxContent> EditCloudPasswordBox(
 	not_null<::Main::Session*> session);
-void RemoveCloudPassword();
+void RemoveCloudPassword(not_null<::Main::Session*> session);
 object_ptr<BoxContent> CloudPasswordAppOutdatedBox();
 
 void AddPrivacyButton(
+	not_null<Window::SessionController*> controller,
 	not_null<Ui::VerticalLayout*> container,
 	rpl::producer<QString> label,
 	ApiWrap::Privacy::Key key,
-	Fn<std::unique_ptr<EditPrivacyController>()> controller);
+	Fn<std::unique_ptr<EditPrivacyController>()> controllerFactory);
 
 class PrivacySecurity : public Section {
 public:
-	PrivacySecurity(QWidget *parent, not_null<UserData*> self);
+	PrivacySecurity(
+		QWidget *parent,
+		not_null<Window::SessionController*> controller);
 
 private:
-	void setupContent();
-
-	not_null<UserData*> _self;
+	void setupContent(not_null<Window::SessionController*> controller);
 
 };