diff --git a/Telegram/SourceFiles/boxes/dictionaries_manager.cpp b/Telegram/SourceFiles/boxes/dictionaries_manager.cpp
index 1d89402514..7712b66769 100644
--- a/Telegram/SourceFiles/boxes/dictionaries_manager.cpp
+++ b/Telegram/SourceFiles/boxes/dictionaries_manager.cpp
@@ -46,13 +46,18 @@ using QStringView = QString;
 
 class Inner : public Ui::RpWidget {
 public:
-	Inner(QWidget *parent, Dictionaries enabledDictionaries);
+	Inner(
+		QWidget *parent,
+		not_null<Main::Session*> session,
+		Dictionaries enabledDictionaries);
 
 	Dictionaries enabledRows() const;
 	QueryCallback queryCallback() const;
 
 private:
-	void setupContent(Dictionaries enabledDictionaries);
+	void setupContent(
+		not_null<Main::Session*> session,
+		Dictionaries enabledDictionaries);
 
 	Dictionaries _enabledRows;
 	QueryCallback _queryCallback;
@@ -96,8 +101,10 @@ auto CreateMultiSelect(QWidget *parent) {
 
 Inner::Inner(
 	QWidget *parent,
-	Dictionaries enabledDictionaries) : RpWidget(parent) {
-	setupContent(std::move(enabledDictionaries));
+	not_null<Main::Session*> session,
+	Dictionaries enabledDictionaries)
+: RpWidget(parent) {
+	setupContent(session, std::move(enabledDictionaries));
 }
 
 QueryCallback Inner::queryCallback() const {
@@ -110,6 +117,7 @@ Dictionaries Inner::enabledRows() const {
 
 auto AddButtonWithLoader(
 		not_null<Ui::VerticalLayout*> content,
+		not_null<Main::Session*> session,
 		const Spellchecker::Dict &dict,
 		bool buttonEnabled,
 		rpl::producer<QStringView> query) {
@@ -288,6 +296,7 @@ auto AddButtonWithLoader(
 			const auto weak = Ui::MakeWeak(button);
 			setLocalLoader(base::make_unique_q<Loader>(
 				App::main(),
+				session,
 				id,
 				Spellchecker::GetDownloadLocation(id),
 				Spellchecker::DictPathByLangId(id),
@@ -336,7 +345,9 @@ auto AddButtonWithLoader(
 	return button;
 }
 
-void Inner::setupContent(Dictionaries enabledDictionaries) {
+void Inner::setupContent(
+		not_null<Main::Session*> session,
+		Dictionaries enabledDictionaries) {
 	const auto content = Ui::CreateChild<Ui::VerticalLayout>(this);
 
 	const auto queryStream = content->lifetime()
@@ -346,6 +357,7 @@ void Inner::setupContent(Dictionaries enabledDictionaries) {
 		const auto id = dict.id;
 		const auto row = AddButtonWithLoader(
 			content,
+			session,
 			dict,
 			ranges::contains(enabledDictionaries, id),
 			queryStream->events());
@@ -389,6 +401,7 @@ void ManageDictionariesBox::prepare() {
 	const auto inner = setInnerWidget(
 		object_ptr<Inner>(
 			this,
+			_session,
 			_session->settings().dictionariesEnabled()),
 		st::boxScroll,
 		multiSelect->height()
diff --git a/Telegram/SourceFiles/chat_helpers/emoji_sets_manager.cpp b/Telegram/SourceFiles/chat_helpers/emoji_sets_manager.cpp
index ea94dcb54a..b53efb2afc 100644
--- a/Telegram/SourceFiles/chat_helpers/emoji_sets_manager.cpp
+++ b/Telegram/SourceFiles/chat_helpers/emoji_sets_manager.cpp
@@ -51,7 +51,7 @@ using SetState = BlobState;
 class Loader final : public BlobLoader {
 public:
 	Loader(
-		QObject *parent,
+		not_null<Main::Session*> session,
 		int id,
 		MTP::DedicatedLoader::Location location,
 		const QString &folder,
@@ -67,16 +67,18 @@ private:
 
 class Inner : public Ui::RpWidget {
 public:
-	Inner(QWidget *parent);
+	Inner(QWidget *parent, not_null<Main::Session*> session);
 
 private:
 	void setupContent();
 
+	const not_null<Main::Session*> _session;
+
 };
 
 class Row : public Ui::RippleButton {
 public:
-	Row(QWidget *widget, const Set &set);
+	Row(QWidget *widget, not_null<Main::Session*> session, const Set &set);
 
 protected:
 	void paintEvent(QPaintEvent *e) override;
@@ -98,6 +100,7 @@ private:
 	void radialAnimationCallback(crl::time now);
 	void updateLoadingToFinished();
 
+	const not_null<Main::Session*> _session;
 	int _id = 0;
 	bool _switching = false;
 	rpl::variable<SetState> _state;
@@ -160,12 +163,12 @@ bool UnpackSet(const QString &path, const QString &folder) {
 
 
 Loader::Loader(
-	QObject *parent,
+	not_null<Main::Session*> session,
 	int id,
 	MTP::DedicatedLoader::Location location,
 	const QString &folder,
 	int size)
-: BlobLoader(parent, id, location, folder, size) {
+: BlobLoader(nullptr, session, id, location, folder, size) {
 }
 
 void Loader::unpack(const QString &path) {
@@ -200,7 +203,9 @@ void Loader::fail() {
 	BlobLoader::fail();
 }
 
-Inner::Inner(QWidget *parent) : RpWidget(parent) {
+Inner::Inner(QWidget *parent, not_null<Main::Session*> session)
+: RpWidget(parent)
+, _session(session) {
 	setupContent();
 }
 
@@ -208,15 +213,16 @@ void Inner::setupContent() {
 	const auto content = Ui::CreateChild<Ui::VerticalLayout>(this);
 
 	for (const auto &set : kSets) {
-		content->add(object_ptr<Row>(content, set));
+		content->add(object_ptr<Row>(content, _session, set));
 	}
 
 	content->resizeToWidth(st::boxWidth);
 	Ui::ResizeFitChild(this, content);
 }
 
-Row::Row(QWidget *widget, const Set &set)
+Row::Row(QWidget *widget, not_null<Main::Session*> session, const Set &set)
 : RippleButton(widget, st::contactsRipple)
+, _session(session)
 , _id(set.id)
 , _state(Available{ set.size }) {
 	setupContent(set);
@@ -411,7 +417,7 @@ void Row::setupHandler() {
 }
 
 void Row::load() {
-	LoadAndSwitchTo(_id);
+	LoadAndSwitchTo(_session, _id);
 }
 
 void Row::setupLabels(const Set &set) {
@@ -530,11 +536,12 @@ void Row::setupAnimation() {
 
 } // namespace
 
-ManageSetsBox::ManageSetsBox(QWidget*) {
+ManageSetsBox::ManageSetsBox(QWidget*, not_null<Main::Session*> session)
+: _session(session) {
 }
 
 void ManageSetsBox::prepare() {
-	const auto inner = setInnerWidget(object_ptr<Inner>(this));
+	const auto inner = setInnerWidget(object_ptr<Inner>(this, _session));
 
 	setTitle(tr::lng_emoji_manage_sets());
 
@@ -543,15 +550,13 @@ void ManageSetsBox::prepare() {
 	setDimensionsToContent(st::boxWidth, inner);
 }
 
-void LoadAndSwitchTo(int id) {
-	Expects(App::main() != nullptr);
-
+void LoadAndSwitchTo(not_null<Main::Session*> session, int id) {
 	if (!ranges::contains(kSets, id, &Set::id)) {
 		ClearNeedSwitchToId();
 		return;
 	}
 	SetGlobalLoader(base::make_unique_q<Loader>(
-		App::main(),
+		session,
 		id,
 		GetDownloadLocation(id),
 		internal::SetDataPath(id),
diff --git a/Telegram/SourceFiles/chat_helpers/emoji_sets_manager.h b/Telegram/SourceFiles/chat_helpers/emoji_sets_manager.h
index 39ea5fd350..e638f52e5f 100644
--- a/Telegram/SourceFiles/chat_helpers/emoji_sets_manager.h
+++ b/Telegram/SourceFiles/chat_helpers/emoji_sets_manager.h
@@ -9,19 +9,25 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 
 #include "boxes/abstract_box.h"
 
+namespace Main {
+class Session;
+} // namespace Main
+
 namespace Ui {
 namespace Emoji {
 
-class ManageSetsBox : public Ui::BoxContent {
+class ManageSetsBox final : public Ui::BoxContent {
 public:
-	explicit ManageSetsBox(QWidget*);
+	ManageSetsBox(QWidget*, not_null<Main::Session*> session);
 
-protected:
+private:
 	void prepare() override;
 
+	const not_null<Main::Session*> _session;
+
 };
 
-void LoadAndSwitchTo(int id);
+void LoadAndSwitchTo(not_null<Main::Session*> session, int id);
 
 } // namespace Emoji
 } // namespace Ui
diff --git a/Telegram/SourceFiles/chat_helpers/spellchecker_common.cpp b/Telegram/SourceFiles/chat_helpers/spellchecker_common.cpp
index 97c6bc9734..d7d84f2308 100644
--- a/Telegram/SourceFiles/chat_helpers/spellchecker_common.cpp
+++ b/Telegram/SourceFiles/chat_helpers/spellchecker_common.cpp
@@ -163,6 +163,7 @@ void DownloadDictionaryInBackground(
 	auto sharedLoader = std::make_shared<base::unique_qptr<DictLoader>>();
 	*sharedLoader = base::make_unique_q<DictLoader>(
 		App::main(),
+		session,
 		id,
 		GetDownloadLocation(id),
 		DictPathByLangId(id),
@@ -197,12 +198,13 @@ rpl::producer<int> GlobalLoaderChanged() {
 
 DictLoader::DictLoader(
 	QObject *parent,
+	not_null<Main::Session*> session,
 	int id,
 	MTP::DedicatedLoader::Location location,
 	const QString &folder,
 	int size,
 	Fn<void()> destroyCallback)
-: BlobLoader(parent, id, location, folder, size)
+: BlobLoader(parent, session, id, location, folder, size)
 , _destroyCallback(std::move(destroyCallback)) {
 }
 
diff --git a/Telegram/SourceFiles/chat_helpers/spellchecker_common.h b/Telegram/SourceFiles/chat_helpers/spellchecker_common.h
index f806ceb088..4d535c363e 100644
--- a/Telegram/SourceFiles/chat_helpers/spellchecker_common.h
+++ b/Telegram/SourceFiles/chat_helpers/spellchecker_common.h
@@ -44,6 +44,7 @@ class DictLoader : public Storage::CloudBlob::BlobLoader {
 public:
 	DictLoader(
 		QObject *parent,
+		not_null<Main::Session*> session,
 		int id,
 		MTP::DedicatedLoader::Location location,
 		const QString &folder,
diff --git a/Telegram/SourceFiles/core/application.cpp b/Telegram/SourceFiles/core/application.cpp
index 3350f0c1b6..606d73d39d 100644
--- a/Telegram/SourceFiles/core/application.cpp
+++ b/Telegram/SourceFiles/core/application.cpp
@@ -114,25 +114,27 @@ Application::Application(not_null<Launcher*> launcher)
 	}, _lifetime);
 
 	activeAccount().sessionChanges(
-	) | rpl::start_with_next([=] {
+	) | rpl::start_with_next([=](Main::Session *session) {
 		if (_mediaView) {
 			hideMediaView();
 			_mediaView->clearData();
 		}
+		if (session && !UpdaterDisabled()) {
+			if (const auto mtp = activeAccount().mtp()) {
+				UpdateChecker().setMtproto(mtp, session->userId());
+			}
+		}
 	}, _lifetime);
 
 	activeAccount().mtpChanges(
 	) | rpl::filter([=](MTP::Instance *instance) {
 		return instance != nullptr;
-	}) | rpl::start_with_next([=](not_null<MTP::Instance*> mtp) {
+	}) | rpl::start_with_next([=] {
 		if (_window) {
 			// This should be called when user settings are read.
 			// Right now after they are read the startMtp() is called.
 			_window->widget()->updateTrayMenu();
 		}
-		if (!UpdaterDisabled()) {
-			UpdateChecker().setMtproto(mtp.get());
-		}
 	}, _lifetime);
 }
 
diff --git a/Telegram/SourceFiles/core/update_checker.cpp b/Telegram/SourceFiles/core/update_checker.cpp
index 8e27b203ef..05f44f4811 100644
--- a/Telegram/SourceFiles/core/update_checker.cpp
+++ b/Telegram/SourceFiles/core/update_checker.cpp
@@ -172,7 +172,7 @@ private:
 
 class MtpChecker : public Checker {
 public:
-	MtpChecker(QPointer<MTP::Instance> instance, bool testing);
+	MtpChecker(QPointer<MTP::Instance> instance, int32 userId, bool testing);
 
 	void start() override;
 
@@ -191,6 +191,7 @@ private:
 		const FileLocation &location) const;
 
 	MTP::WeakInstance _mtp;
+	int32 _mtpUserId = 0;
 
 };
 
@@ -877,13 +878,17 @@ void HttpLoaderActor::partFailed(QNetworkReply::NetworkError e) {
 	_parent->threadSafeFailed();
 }
 
-MtpChecker::MtpChecker(QPointer<MTP::Instance> instance, bool testing)
+MtpChecker::MtpChecker(
+	QPointer<MTP::Instance> instance,
+	int32 userId,
+	bool testing)
 : Checker(testing)
-, _mtp(instance) {
+, _mtp(instance)
+, _mtpUserId(userId) {
 }
 
 void MtpChecker::start() {
-	if (!_mtp.valid()) {
+	if (!_mtp.valid() || !_mtpUserId) {
 		LOG(("Update Info: MTP is unavailable."));
 		crl::on_main(this, [=] { fail(); });
 		return;
@@ -891,7 +896,8 @@ void MtpChecker::start() {
 	const auto updaterVersion = Platform::AutoUpdateVersion();
 	const auto feed = "tdhbcfeed"
 		+ (updaterVersion > 1 ? QString::number(updaterVersion) : QString());
-	MTP::ResolveChannel(&_mtp, feed, [=](const MTPInputChannel &channel) {
+	MTP::ResolveChannel(&_mtp, _mtpUserId, feed, [=](
+			const MTPInputChannel &channel) {
 		_mtp.send(
 			MTPmessages_GetHistory(
 				MTP_inputPeerChannel(
@@ -925,7 +931,12 @@ void MtpChecker::gotMessage(const MTPmessages_Messages &result) {
 			fail();
 		}
 	};
-	MTP::StartDedicatedLoader(&_mtp, *location, UpdatesFolder(), ready);
+	MTP::StartDedicatedLoader(
+		&_mtp,
+		_mtpUserId,
+		*location,
+		UpdatesFolder(),
+		ready);
 }
 
 auto MtpChecker::parseMessage(const MTPmessages_Messages &result) const
@@ -1033,7 +1044,7 @@ public:
 	int already() const;
 	int size() const;
 
-	void setMtproto(const QPointer<MTP::Instance> &mtproto);
+	void setMtproto(const QPointer<MTP::Instance> &mtproto, int32 userId);
 
 	~Updater();
 
@@ -1079,6 +1090,7 @@ private:
 	std::shared_ptr<Loader> _activeLoader;
 	bool _usingMtprotoLoader = (cAlphaVersion() != 0);
 	QPointer<MTP::Instance> _mtproto;
+	int32 _mtprotoUserId = 0;
 
 	rpl::lifetime _lifetime;
 
@@ -1226,7 +1238,7 @@ void Updater::start(bool forceWait) {
 			std::make_unique<HttpChecker>(_testing));
 		startImplementation(
 			&_mtpImplementation,
-			std::make_unique<MtpChecker>(_mtproto, _testing));
+			std::make_unique<MtpChecker>(_mtproto, _mtprotoUserId, _testing));
 
 		_checking.fire({});
 	} else {
@@ -1289,8 +1301,11 @@ void Updater::test() {
 	start(false);
 }
 
-void Updater::setMtproto(const QPointer<MTP::Instance> &mtproto) {
+void Updater::setMtproto(
+		const QPointer<MTP::Instance> &mtproto,
+		int32 userId) {
 	_mtproto = mtproto;
+	_mtprotoUserId = userId;
 }
 
 void Updater::handleTimeout() {
@@ -1388,8 +1403,11 @@ Updater::~Updater() {
 UpdateChecker::UpdateChecker()
 : _updater(GetUpdaterInstance()) {
 	if (IsAppLaunched()) {
-		if (const auto mtproto = Core::App().activeAccount().mtp()) {
-			_updater->setMtproto(mtproto);
+		const auto &account = Core::App().activeAccount();
+		if (account.sessionExists()) {
+			if (const auto mtproto = account.mtp()) {
+				_updater->setMtproto(mtproto, account.session().userId());
+			}
 		}
 	}
 }
@@ -1423,8 +1441,10 @@ void UpdateChecker::test() {
 	_updater->test();
 }
 
-void UpdateChecker::setMtproto(const QPointer<MTP::Instance> &mtproto) {
-	_updater->setMtproto(mtproto);
+void UpdateChecker::setMtproto(
+		const QPointer<MTP::Instance> &mtproto,
+		int32 userId) {
+	_updater->setMtproto(mtproto, userId);
 }
 
 void UpdateChecker::stop() {
diff --git a/Telegram/SourceFiles/core/update_checker.h b/Telegram/SourceFiles/core/update_checker.h
index 4d137c8815..485db1e8dc 100644
--- a/Telegram/SourceFiles/core/update_checker.h
+++ b/Telegram/SourceFiles/core/update_checker.h
@@ -41,7 +41,7 @@ public:
 	void stop();
 	void test();
 
-	void setMtproto(const QPointer<MTP::Instance> &mtproto);
+	void setMtproto(const QPointer<MTP::Instance> &mtproto, int32 userId);
 
 	State state() const;
 	int already() const;
diff --git a/Telegram/SourceFiles/main/main_account.cpp b/Telegram/SourceFiles/main/main_account.cpp
index 6d4ad940da..6149ae3963 100644
--- a/Telegram/SourceFiles/main/main_account.cpp
+++ b/Telegram/SourceFiles/main/main_account.cpp
@@ -126,12 +126,13 @@ void Account::createSession(
 	Expects(_sessionValue.current() == nullptr);
 
 	_session = std::make_unique<Session>(this, user, std::move(settings));
-	_sessionValue = _session.get();
 
 	if (!serialized.isEmpty()) {
 		// For now it depends on Auth() which depends on _sessionValue.
 		local().readSelf(serialized, streamVersion);
 	}
+
+	_sessionValue = _session.get();
 }
 
 void Account::destroySession() {
diff --git a/Telegram/SourceFiles/main/main_account.h b/Telegram/SourceFiles/main/main_account.h
index ef37669d1f..1ccde7510f 100644
--- a/Telegram/SourceFiles/main/main_account.h
+++ b/Telegram/SourceFiles/main/main_account.h
@@ -53,7 +53,7 @@ public:
 	[[nodiscard]] rpl::producer<Session*> sessionValue() const;
 	[[nodiscard]] rpl::producer<Session*> sessionChanges() const;
 
-	[[nodiscard]] MTP::Instance *mtp() {
+	[[nodiscard]] MTP::Instance *mtp() const {
 		return _mtp.get();
 	}
 	[[nodiscard]] rpl::producer<MTP::Instance*> mtpValue() const;
diff --git a/Telegram/SourceFiles/main/main_session.cpp b/Telegram/SourceFiles/main/main_session.cpp
index 5de2b51c77..47d7fe071f 100644
--- a/Telegram/SourceFiles/main/main_session.cpp
+++ b/Telegram/SourceFiles/main/main_session.cpp
@@ -147,8 +147,6 @@ bool Session::validateSelf(const MTPUser &user) {
 }
 
 void Session::saveSettingsDelayed(crl::time delay) {
-	Expects(this == &Auth());
-
 	_saveSettingsTimer.callOnce(delay);
 }
 
@@ -184,7 +182,3 @@ void Session::saveSettingsNowIfNeeded() {
 }
 
 } // namespace Main
-
-Main::Session &Auth() {
-	return Core::App().activeAccount().session();
-}
diff --git a/Telegram/SourceFiles/main/main_session.h b/Telegram/SourceFiles/main/main_session.h
index 30f09b36c4..0671d9330c 100644
--- a/Telegram/SourceFiles/main/main_session.h
+++ b/Telegram/SourceFiles/main/main_session.h
@@ -169,5 +169,3 @@ private:
 };
 
 } // namespace Main
-
-Main::Session &Auth();
diff --git a/Telegram/SourceFiles/mtproto/dedicated_file_loader.cpp b/Telegram/SourceFiles/mtproto/dedicated_file_loader.cpp
index c6ab7d6402..3f43ac1d1b 100644
--- a/Telegram/SourceFiles/mtproto/dedicated_file_loader.cpp
+++ b/Telegram/SourceFiles/mtproto/dedicated_file_loader.cpp
@@ -365,6 +365,7 @@ Fn<void(const RPCError &)> DedicatedLoader::failHandler() {
 
 void ResolveChannel(
 		not_null<MTP::WeakInstance*> mtp,
+		int32 userId,
 		const QString &username,
 		Fn<void(const MTPInputChannel &channel)> done,
 		Fn<void()> fail) {
@@ -373,20 +374,20 @@ void ResolveChannel(
 			).arg(username));
 		fail();
 	};
-	if (!Main::Session::Exists()) {
+	if (!userId) {
 		failed();
 		return;
 	}
 
 	struct ResolveResult {
-		base::weak_ptr<Main::Session> auth;
+		int32 userId = 0;
 		MTPInputChannel channel;
 	};
 	static std::map<QString, ResolveResult> ResolveCache;
 
 	const auto i = ResolveCache.find(username);
 	if (i != end(ResolveCache)) {
-		if (i->second.auth.get() == &Auth()) {
+		if (i->second.userId == userId) {
 			done(i->second.channel);
 			return;
 		}
@@ -399,7 +400,7 @@ void ResolveChannel(
 		if (const auto channel = ExtractChannel(result)) {
 			ResolveCache.emplace(
 				username,
-				ResolveResult { base::make_weak(&Auth()), *channel });
+				ResolveResult { userId, *channel });
 			done(*channel);
 		} else {
 			failed();
@@ -429,6 +430,7 @@ std::optional<MTPMessage> GetMessagesElement(
 
 void StartDedicatedLoader(
 		not_null<MTP::WeakInstance*> mtp,
+		int32 userId,
 		const DedicatedLoader::Location &location,
 		const QString &folder,
 		Fn<void(std::unique_ptr<DedicatedLoader>)> ready) {
@@ -448,7 +450,7 @@ void StartDedicatedLoader(
 	};
 
 	const auto [username, postId] = location;
-	ResolveChannel(mtp, username, [=, postId = postId](
+	ResolveChannel(mtp, userId, username, [=, postId = postId](
 			const MTPInputChannel &channel) {
 		mtp->send(
 			MTPchannels_GetMessages(
diff --git a/Telegram/SourceFiles/mtproto/dedicated_file_loader.h b/Telegram/SourceFiles/mtproto/dedicated_file_loader.h
index 645f7e29e8..949dfa6bc8 100644
--- a/Telegram/SourceFiles/mtproto/dedicated_file_loader.h
+++ b/Telegram/SourceFiles/mtproto/dedicated_file_loader.h
@@ -143,6 +143,7 @@ private:
 
 void ResolveChannel(
 	not_null<MTP::WeakInstance*> mtp,
+	int32 userId,
 	const QString &username,
 	Fn<void(const MTPInputChannel &channel)> done,
 	Fn<void()> fail);
@@ -152,6 +153,7 @@ std::optional<MTPMessage> GetMessagesElement(
 
 void StartDedicatedLoader(
 	not_null<MTP::WeakInstance*> mtp,
+	int32 userId,
 	const DedicatedLoader::Location &location,
 	const QString &folder,
 	Fn<void(std::unique_ptr<DedicatedLoader>)> ready);
diff --git a/Telegram/SourceFiles/settings/settings_chat.cpp b/Telegram/SourceFiles/settings/settings_chat.cpp
index e835390553..110e621548 100644
--- a/Telegram/SourceFiles/settings/settings_chat.cpp
+++ b/Telegram/SourceFiles/settings/settings_chat.cpp
@@ -737,8 +737,8 @@ void SetupStickersEmoji(
 		st::settingsChatButton,
 		&st::settingsIconEmoji,
 		st::settingsChatIconLeft
-	)->addClickHandler([] {
-		Ui::show(Box<Ui::Emoji::ManageSetsBox>());
+	)->addClickHandler([=] {
+		Ui::show(Box<Ui::Emoji::ManageSetsBox>(session));
 	});
 
 	AddSkip(container, st::settingsCheckboxesSkip);
diff --git a/Telegram/SourceFiles/storage/localstorage.cpp b/Telegram/SourceFiles/storage/localstorage.cpp
index 28cfa0c5fd..41b2ca8a61 100644
--- a/Telegram/SourceFiles/storage/localstorage.cpp
+++ b/Telegram/SourceFiles/storage/localstorage.cpp
@@ -582,7 +582,7 @@ public:
 				voice->waveform[0] = -2;
 				voice->wavemax = 0;
 			}
-			Auth().data().requestDocumentViewRepaint(_doc);
+			_doc->owner().requestDocumentViewRepaint(_doc);
 		}
 	}
 	~CountWaveformTask() {
diff --git a/Telegram/SourceFiles/storage/serialize_common.cpp b/Telegram/SourceFiles/storage/serialize_common.cpp
index 5637b2cb46..9cd43a3055 100644
--- a/Telegram/SourceFiles/storage/serialize_common.cpp
+++ b/Telegram/SourceFiles/storage/serialize_common.cpp
@@ -200,7 +200,10 @@ void writePeer(QDataStream &stream, PeerData *peer) {
 	}
 }
 
-PeerData *readPeer(int streamAppVersion, QDataStream &stream) {
+PeerData *readPeer(
+		not_null<Main::Session*> session,
+		int streamAppVersion,
+		QDataStream &stream) {
 	quint64 peerId = 0, photoId = 0;
 	stream >> peerId >> photoId;
 	if (!peerId) {
@@ -213,8 +216,8 @@ PeerData *readPeer(int streamAppVersion, QDataStream &stream) {
 		return nullptr;
 	}
 
-	const auto loaded = Auth().data().peerLoaded(peerId);
-	const auto result = loaded ? loaded : Auth().data().peer(peerId).get();
+	const auto loaded = session->data().peerLoaded(peerId);
+	const auto result = loaded ? loaded : session->data().peer(peerId).get();
 	if (!loaded) {
 		result->loadedStatus = PeerData::FullLoaded;
 	}
@@ -234,7 +237,7 @@ PeerData *readPeer(int streamAppVersion, QDataStream &stream) {
 		userpicAccessHash = access;
 
 		const auto showPhone = !user->isServiceUser()
-			&& (user->id != Auth().userPeerId())
+			&& (user->id != session->userPeerId())
 			&& (contact <= 0);
 		const auto pname = (showPhone && !phone.isEmpty())
 			? App::formatPhone(phone)
@@ -253,7 +256,7 @@ PeerData *readPeer(int streamAppVersion, QDataStream &stream) {
 				user->botInfo->inlinePlaceholder = inlinePlaceholder;
 			}
 
-			if (user->id == Auth().userPeerId()) {
+			if (user->id == session->userPeerId()) {
 				user->input = MTP_inputPeerSelf();
 				user->inputUser = MTP_inputUserSelf();
 			} else {
diff --git a/Telegram/SourceFiles/storage/serialize_common.h b/Telegram/SourceFiles/storage/serialize_common.h
index b0aa7867be..6db828ecf1 100644
--- a/Telegram/SourceFiles/storage/serialize_common.h
+++ b/Telegram/SourceFiles/storage/serialize_common.h
@@ -127,7 +127,10 @@ inline MTP::AuthKey::Data read<MTP::AuthKey::Data>(QDataStream &stream) {
 
 uint32 peerSize(not_null<PeerData*> peer);
 void writePeer(QDataStream &stream, PeerData *peer);
-PeerData *readPeer(int streamAppVersion, QDataStream &stream);
+PeerData *readPeer(
+	not_null<Main::Session*> session,
+	int streamAppVersion,
+	QDataStream &stream);
 QString peekUserPhone(int streamAppVersion, QDataStream &stream);
 
 } // namespace Serialize
diff --git a/Telegram/SourceFiles/storage/serialize_document.cpp b/Telegram/SourceFiles/storage/serialize_document.cpp
index 0799e42416..e8fa97d61f 100644
--- a/Telegram/SourceFiles/storage/serialize_document.cpp
+++ b/Telegram/SourceFiles/storage/serialize_document.cpp
@@ -56,7 +56,11 @@ void Document::writeToStream(QDataStream &stream, DocumentData *document) {
 	stream << qint32(document->videoThumbnailByteSize());
 }
 
-DocumentData *Document::readFromStreamHelper(int streamAppVersion, QDataStream &stream, const StickerSetInfo *info) {
+DocumentData *Document::readFromStreamHelper(
+		not_null<Main::Session*> session,
+		int streamAppVersion,
+		QDataStream &stream,
+		const StickerSetInfo *info) {
 	quint64 id, access;
 	QString name, mime;
 	qint32 date, dc, size, width, height, type, versionTag, version = 0;
@@ -151,7 +155,7 @@ DocumentData *Document::readFromStreamHelper(int streamAppVersion, QDataStream &
 		// size letter ('s' or 'm') is lost, it was not saved in legacy.
 		return nullptr;
 	}
-	return Auth().data().document(
+	return session->data().document(
 		id,
 		access,
 		fileReference,
@@ -171,12 +175,19 @@ DocumentData *Document::readFromStreamHelper(int streamAppVersion, QDataStream &
 		size);
 }
 
-DocumentData *Document::readStickerFromStream(int streamAppVersion, QDataStream &stream, const StickerSetInfo &info) {
-	return readFromStreamHelper(streamAppVersion, stream, &info);
+DocumentData *Document::readStickerFromStream(
+		not_null<Main::Session*> session,
+		int streamAppVersion,
+		QDataStream &stream,
+		const StickerSetInfo &info) {
+	return readFromStreamHelper(session, streamAppVersion, stream, &info);
 }
 
-DocumentData *Document::readFromStream(int streamAppVersion, QDataStream &stream) {
-	return readFromStreamHelper(streamAppVersion, stream, nullptr);
+DocumentData *Document::readFromStream(
+		not_null<Main::Session*> session,
+		int streamAppVersion,
+		QDataStream &stream) {
+	return readFromStreamHelper(session, streamAppVersion, stream, nullptr);
 }
 
 int Document::sizeInStream(DocumentData *document) {
diff --git a/Telegram/SourceFiles/storage/serialize_document.h b/Telegram/SourceFiles/storage/serialize_document.h
index 8851e798d6..252db9544a 100644
--- a/Telegram/SourceFiles/storage/serialize_document.h
+++ b/Telegram/SourceFiles/storage/serialize_document.h
@@ -25,12 +25,23 @@ public:
 	};
 
 	static void writeToStream(QDataStream &stream, DocumentData *document);
-	static DocumentData *readStickerFromStream(int streamAppVersion, QDataStream &stream, const StickerSetInfo &info);
-	static DocumentData *readFromStream(int streamAppVersion, QDataStream &stream);
+	static DocumentData *readStickerFromStream(
+		not_null<Main::Session*> session,
+		int streamAppVersion,
+		QDataStream &stream,
+		const StickerSetInfo &info);
+	static DocumentData *readFromStream(
+		not_null<Main::Session*> session,
+		int streamAppVersion,
+		QDataStream &stream);
 	static int sizeInStream(DocumentData *document);
 
 private:
-	static DocumentData *readFromStreamHelper(int streamAppVersion, QDataStream &stream, const StickerSetInfo *info);
+	static DocumentData *readFromStreamHelper(
+		not_null<Main::Session*> session,
+		int streamAppVersion,
+		QDataStream &stream,
+		const StickerSetInfo *info);
 
 };
 
diff --git a/Telegram/SourceFiles/storage/storage_account.cpp b/Telegram/SourceFiles/storage/storage_account.cpp
index f229835f02..5d11087f94 100644
--- a/Telegram/SourceFiles/storage/storage_account.cpp
+++ b/Telegram/SourceFiles/storage/storage_account.cpp
@@ -421,12 +421,12 @@ void Account::writeMap() {
 	map.writeData(_passcodeKeyEncrypted);
 
 	uint32 mapSize = 0;
-	const auto self = [] {
-		if (!Main::Session::Exists()) {
+	const auto self = [&] {
+		if (!_owner->sessionExists()) {
 			DEBUG_LOG(("AuthSelf Warning: Session does not exist."));
 			return QByteArray();
 		}
-		const auto self = Auth().user();
+		const auto self = _owner->session().user();
 		if (self->phone().isEmpty()) {
 			DEBUG_LOG(("AuthSelf Error: Phone is empty."));
 			return QByteArray();
@@ -1343,7 +1343,7 @@ void Account::writeStickerSets(
 		FileKey &stickersKey,
 		CheckSet checkSet,
 		const Data::StickersSetsOrder &order) {
-	const auto &sets = Auth().data().stickers().sets();
+	const auto &sets = _owner->session().data().stickers().sets();
 	if (sets.empty()) {
 		if (stickersKey) {
 			ClearKey(stickersKey, _basePath);
@@ -1444,7 +1444,7 @@ void Account::readStickerSets(
 		stickersKey = 0;
 	};
 
-	auto &sets = Auth().data().stickers().setsRef();
+	auto &sets = _owner->session().data().stickers().setsRef();
 	if (outOrder) outOrder->clear();
 
 	quint32 versionTag = 0;
@@ -1519,7 +1519,7 @@ void Account::readStickerSets(
 			// We will set this flags from order lists when reading those stickers.
 			setFlags &= ~(MTPDstickerSet::Flag::f_installed_date | MTPDstickerSet_ClientFlag::f_featured);
 			it = sets.emplace(setId, std::make_unique<Data::StickersSet>(
-				&Auth().data(),
+				&_owner->session().data(),
 				setId,
 				setAccess,
 				setTitle,
@@ -1550,7 +1550,10 @@ void Account::readStickerSets(
 		Serialize::Document::StickerSetInfo info(setId, setAccess, setShortName);
 		base::flat_set<DocumentId> read;
 		for (int32 j = 0; j < scnt; ++j) {
-			auto document = Serialize::Document::readStickerFromStream(stickers.version, stickers.stream, info);
+			auto document = Serialize::Document::readStickerFromStream(
+				&_owner->session(),
+				stickers.version,
+				stickers.stream, info);
 			if (!CheckStreamStatus(stickers.stream)) {
 				return failed();
 			} else if (!document
@@ -1605,7 +1608,7 @@ void Account::readStickerSets(
 			for (int32 k = 0; k < stickersCount; ++k) {
 				quint64 id;
 				stickers.stream >> id;
-				const auto doc = Auth().data().document(id);
+				const auto doc = _owner->session().data().document(id);
 				if (!doc->sticker()) continue;
 
 				pack.push_back(doc);
@@ -1673,7 +1676,7 @@ void Account::writeInstalledStickers() {
 			return StickerSetCheckResult::Skip;
 		}
 		return StickerSetCheckResult::Write;
-	}, Auth().data().stickers().setsOrder());
+	}, _owner->session().data().stickers().setsOrder());
 }
 
 void Account::writeFeaturedStickers() {
@@ -1691,7 +1694,7 @@ void Account::writeFeaturedStickers() {
 			return StickerSetCheckResult::Skip;
 		}
 		return StickerSetCheckResult::Write;
-	}, Auth().data().stickers().featuredSetsOrder());
+	}, _owner->session().data().stickers().featuredSetsOrder());
 }
 
 void Account::writeRecentStickers() {
@@ -1718,7 +1721,7 @@ void Account::writeArchivedStickers() {
 			return StickerSetCheckResult::Skip;
 		}
 		return StickerSetCheckResult::Write;
-	}, Auth().data().stickers().archivedSetsOrder());
+	}, _owner->session().data().stickers().archivedSetsOrder());
 }
 
 void Account::importOldRecentStickers() {
@@ -1734,10 +1737,10 @@ void Account::importOldRecentStickers() {
 		return;
 	}
 
-	auto &sets = Auth().data().stickers().setsRef();
+	auto &sets = _owner->session().data().stickers().setsRef();
 	sets.clear();
 
-	auto &order = Auth().data().stickers().setsOrderRef();
+	auto &order = _owner->session().data().stickers().setsOrderRef();
 	order.clear();
 
 	auto &recent = cRefRecentStickers();
@@ -1746,7 +1749,7 @@ void Account::importOldRecentStickers() {
 	const auto def = sets.emplace(
 		Data::Stickers::DefaultSetId,
 		std::make_unique<Data::StickersSet>(
-			&Auth().data(),
+			&_owner->session().data(),
 			Data::Stickers::DefaultSetId,
 			uint64(0),
 			tr::lng_stickers_default_set(tr::now),
@@ -1760,7 +1763,7 @@ void Account::importOldRecentStickers() {
 	const auto custom = sets.emplace(
 		Data::Stickers::CustomSetId,
 		std::make_unique<Data::StickersSet>(
-			&Auth().data(),
+			&_owner->session().data(),
 			Data::Stickers::CustomSetId,
 			uint64(0),
 			qsl("Custom stickers"),
@@ -1795,7 +1798,7 @@ void Account::importOldRecentStickers() {
 			attributes.push_back(MTP_documentAttributeImageSize(MTP_int(width), MTP_int(height)));
 		}
 
-		const auto doc = Auth().data().document(
+		const auto doc = _owner->session().data().document(
 			id,
 			access,
 			QByteArray(),
@@ -1844,21 +1847,21 @@ void Account::readInstalledStickers() {
 		return importOldRecentStickers();
 	}
 
-	Auth().data().stickers().setsRef().clear();
+	_owner->session().data().stickers().setsRef().clear();
 	readStickerSets(
 		_installedStickersKey,
-		&Auth().data().stickers().setsOrderRef(),
+		&_owner->session().data().stickers().setsOrderRef(),
 		MTPDstickerSet::Flag::f_installed_date);
 }
 
 void Account::readFeaturedStickers() {
 	readStickerSets(
 		_featuredStickersKey,
-		&Auth().data().stickers().featuredSetsOrderRef(),
+		&_owner->session().data().stickers().featuredSetsOrderRef(),
 		MTPDstickerSet::Flags() | MTPDstickerSet_ClientFlag::f_featured);
 
-	const auto &sets = Auth().data().stickers().sets();
-	const auto &order = Auth().data().stickers().featuredSetsOrder();
+	const auto &sets = _owner->session().data().stickers().sets();
+	const auto &order = _owner->session().data().stickers().featuredSetsOrder();
 	int unreadCount = 0;
 	for (const auto setId : order) {
 		auto it = sets.find(setId);
@@ -1867,7 +1870,7 @@ void Account::readFeaturedStickers() {
 			++unreadCount;
 		}
 	}
-	Auth().data().stickers().setFeaturedSetsUnreadCount(unreadCount);
+	_owner->session().data().stickers().setFeaturedSetsUnreadCount(unreadCount);
 }
 
 void Account::readRecentStickers() {
@@ -1881,13 +1884,13 @@ void Account::readFavedStickers() {
 void Account::readArchivedStickers() {
 	static bool archivedStickersRead = false;
 	if (!archivedStickersRead) {
-		readStickerSets(_archivedStickersKey, &Auth().data().stickers().archivedSetsOrderRef());
+		readStickerSets(_archivedStickersKey, &_owner->session().data().stickers().archivedSetsOrderRef());
 		archivedStickersRead = true;
 	}
 }
 
 void Account::writeSavedGifs() {
-	auto &saved = Auth().data().stickers().savedGifs();
+	auto &saved = _owner->session().data().stickers().savedGifs();
 	if (saved.isEmpty()) {
 		if (_savedGifsKey) {
 			ClearKey(_savedGifsKey, _basePath);
@@ -1925,7 +1928,7 @@ void Account::readSavedGifs() {
 		return;
 	}
 
-	auto &saved = Auth().data().stickers().savedGifsRef();
+	auto &saved = _owner->session().data().stickers().savedGifsRef();
 	const auto failed = [&] {
 		ClearKey(_savedGifsKey, _basePath);
 		_savedGifsKey = 0;
@@ -1938,7 +1941,10 @@ void Account::readSavedGifs() {
 	saved.reserve(cnt);
 	OrderedSet<DocumentId> read;
 	for (uint32 i = 0; i < cnt; ++i) {
-		auto document = Serialize::Document::readFromStream(gifs.version, gifs.stream);
+		auto document = Serialize::Document::readFromStream(
+			&_owner->session(),
+			gifs.version,
+			gifs.stream);
 		if (!CheckStreamStatus(gifs.stream)) {
 			return failed();
 		} else if (!document || !document->isGifv()) {
@@ -2229,6 +2235,7 @@ void Account::readRecentHashtagsAndBots() {
 			bots.reserve(botsCount);
 			for (auto i = 0; i < botsCount; ++i) {
 				const auto peer = Serialize::readPeer(
+					&_owner->session(),
 					hashtags.version,
 					hashtags.stream);
 				if (!peer) {
@@ -2439,11 +2446,14 @@ void Account::writeSelf() {
 
 void Account::readSelf(const QByteArray &serialized, int32 streamVersion) {
 	QDataStream stream(serialized);
-	const auto user = Auth().user();
+	const auto user = _owner->session().user();
 	const auto wasLoadedStatus = std::exchange(
 		user->loadedStatus,
 		PeerData::NotLoaded);
-	const auto self = Serialize::readPeer(streamVersion, stream);
+	const auto self = Serialize::readPeer(
+		&_owner->session(),
+		streamVersion,
+		stream);
 	if (!self || !self->isSelf() || self != user) {
 		user->loadedStatus = wasLoadedStatus;
 		return;
diff --git a/Telegram/SourceFiles/storage/storage_cloud_blob.cpp b/Telegram/SourceFiles/storage/storage_cloud_blob.cpp
index 300dffd918..83d0b56160 100644
--- a/Telegram/SourceFiles/storage/storage_cloud_blob.cpp
+++ b/Telegram/SourceFiles/storage/storage_cloud_blob.cpp
@@ -8,10 +8,10 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "storage/storage_cloud_blob.h"
 
 #include "base/zlib_help.h"
-#include "core/application.h"
 #include "lang/lang_keys.h"
 #include "layout.h"
 #include "main/main_account.h"
+#include "main/main_session.h"
 
 namespace Storage::CloudBlob {
 
@@ -95,6 +95,7 @@ QString StateDescription(const BlobState &state, tr::phrase<> activeText) {
 
 BlobLoader::BlobLoader(
 	QObject *parent,
+	not_null<Main::Session*> session,
 	int id,
 	MTP::DedicatedLoader::Location location,
 	const QString &folder,
@@ -103,7 +104,8 @@ BlobLoader::BlobLoader(
 , _folder(folder)
 , _id(id)
 , _state(Loading{ 0, size })
-, _mtproto(Core::App().activeAccount().mtp()) {
+, _mtproto(session->account().mtp())
+, _mtprotoUserId(session->userId()) {
 	const auto ready = [=](std::unique_ptr<MTP::DedicatedLoader> loader) {
 		if (loader) {
 			setImplementation(std::move(loader));
@@ -111,7 +113,12 @@ BlobLoader::BlobLoader(
 			fail();
 		}
 	};
-	MTP::StartDedicatedLoader(&_mtproto, location, _folder, ready);
+	MTP::StartDedicatedLoader(
+		&_mtproto,
+		_mtprotoUserId,
+		location,
+		_folder,
+		ready);
 }
 
 int BlobLoader::id() const {
diff --git a/Telegram/SourceFiles/storage/storage_cloud_blob.h b/Telegram/SourceFiles/storage/storage_cloud_blob.h
index af6301ca0a..489bc8a72e 100644
--- a/Telegram/SourceFiles/storage/storage_cloud_blob.h
+++ b/Telegram/SourceFiles/storage/storage_cloud_blob.h
@@ -14,6 +14,10 @@ template <typename ...>
 struct phrase;
 } // namespace tr
 
+namespace Main {
+class Session;
+} // namespace Main
+
 namespace Storage::CloudBlob {
 
 constexpr auto kCloudLocationUsername = "tdhbcfiles"_cs;
@@ -79,6 +83,7 @@ class BlobLoader : public QObject {
 public:
 	BlobLoader(
 		QObject *parent,
+		not_null<Main::Session*> session,
 		int id,
 		MTP::DedicatedLoader::Location location,
 		const QString &folder,
@@ -102,6 +107,8 @@ private:
 	rpl::variable<BlobState> _state;
 
 	MTP::WeakInstance _mtproto;
+	int32 _mtprotoUserId = 0;
+
 	std::unique_ptr<MTP::DedicatedLoader> _implementation;
 
 };
diff --git a/Telegram/SourceFiles/window/window_controller.cpp b/Telegram/SourceFiles/window/window_controller.cpp
index 8252f175d4..723f715377 100644
--- a/Telegram/SourceFiles/window/window_controller.cpp
+++ b/Telegram/SourceFiles/window/window_controller.cpp
@@ -83,10 +83,12 @@ void Controller::setupIntro() {
 }
 
 void Controller::setupMain() {
+	Expects(_account->sessionExists());
+
 	_widget.setupMain();
 
 	if (const auto id = Ui::Emoji::NeedToSwitchBackToId()) {
-		Ui::Emoji::LoadAndSwitchTo(id);
+		Ui::Emoji::LoadAndSwitchTo(&_account->session(), id);
 	}
 }