diff --git a/Telegram/SourceFiles/api/api_sending.cpp b/Telegram/SourceFiles/api/api_sending.cpp
index 97ff21621..c50fa875e 100644
--- a/Telegram/SourceFiles/api/api_sending.cpp
+++ b/Telegram/SourceFiles/api/api_sending.cpp
@@ -193,8 +193,8 @@ void SendExistingDocument(
 	if (document->sticker()) {
 		if (const auto main = App::main()) {
 			main->incrementSticker(document);
-			document->owner().stickers().notifyRecentUpdated();
 		}
+		document->owner().stickers().notifyRecentUpdated();
 	}
 }
 
diff --git a/Telegram/SourceFiles/boxes/sticker_set_box.cpp b/Telegram/SourceFiles/boxes/sticker_set_box.cpp
index b1ad4c216..980c84b26 100644
--- a/Telegram/SourceFiles/boxes/sticker_set_box.cpp
+++ b/Telegram/SourceFiles/boxes/sticker_set_box.cpp
@@ -461,8 +461,8 @@ void StickerSetBox::Inner::mouseReleaseEvent(QMouseEvent *e) {
 		const auto index = stickerFromGlobalPos(e->globalPos());
 		if (index >= 0 && index < _pack.size() && !isMasksSet()) {
 			const auto sticker = _pack[index];
-			Ui::PostponeCall(crl::guard(App::main(), [=] {
-				if (App::main()->onSendSticker(sticker)) {
+			Ui::PostponeCall(crl::guard(_controller, [=] {
+				if (_controller->content()->sendExistingDocument(sticker)) {
 					Ui::hideSettingsAndLayer();
 				}
 			}));
diff --git a/Telegram/SourceFiles/calls/calls_box_controller.cpp b/Telegram/SourceFiles/calls/calls_box_controller.cpp
index f6e90c4f3..88754cb92 100644
--- a/Telegram/SourceFiles/calls/calls_box_controller.cpp
+++ b/Telegram/SourceFiles/calls/calls_box_controller.cpp
@@ -302,10 +302,14 @@ void BoxController::refreshAbout() {
 }
 
 void BoxController::rowClicked(not_null<PeerListRow*> row) {
-	auto itemsRow = static_cast<Row*>(row.get());
-	auto itemId = itemsRow->maxItemId();
-	InvokeQueued(App::main(), [peerId = row->peer()->id, itemId] {
-		Ui::showPeerHistory(peerId, itemId);
+	const auto itemsRow = static_cast<Row*>(row.get());
+	const auto itemId = itemsRow->maxItemId();
+	const auto window = _window;
+	crl::on_main(window, [=, peer = row->peer()] {
+		window->showPeerHistory(
+			peer,
+			Window::SectionShow::Way::ClearStack,
+			itemId);
 	});
 }
 
diff --git a/Telegram/SourceFiles/history/history_item.cpp b/Telegram/SourceFiles/history/history_item.cpp
index 20f40fc25..354dd4f1f 100644
--- a/Telegram/SourceFiles/history/history_item.cpp
+++ b/Telegram/SourceFiles/history/history_item.cpp
@@ -904,16 +904,18 @@ ClickHandlerPtr goToMessageClickHandler(
 		MsgId msgId,
 		FullMsgId returnToId) {
 	return std::make_shared<LambdaClickHandler>([=] {
-		if (const auto main = App::main()) {
-			if (const auto returnTo = peer->owner().message(returnToId)) {
-				if (returnTo->history()->peer == peer) {
-					main->pushReplyReturn(returnTo);
+		if (const auto main = App::main()) { // multi good
+			if (&main->session() == &peer->session()) {
+				if (const auto returnTo = peer->owner().message(returnToId)) {
+					if (returnTo->history()->peer == peer) {
+						main->pushReplyReturn(returnTo);
+					}
 				}
+				main->controller()->showPeerHistory(
+					peer,
+					Window::SectionShow::Way::Forward,
+					msgId);
 			}
-			App::wnd()->sessionController()->showPeerHistory(
-				peer,
-				Window::SectionShow::Way::Forward,
-				msgId);
 		}
 	});
 }
diff --git a/Telegram/SourceFiles/history/view/history_view_context_menu.cpp b/Telegram/SourceFiles/history/view/history_view_context_menu.cpp
index 898d71eff..7ba718719 100644
--- a/Telegram/SourceFiles/history/view/history_view_context_menu.cpp
+++ b/Telegram/SourceFiles/history/view/history_view_context_menu.cpp
@@ -506,8 +506,9 @@ bool AddDeleteMessageAction(
 			}
 		}
 	}
+	const auto controller = list->controller();
 	const auto itemId = item->fullId();
-	menu->addAction(tr::lng_context_delete_msg(tr::now), [=] {
+	const auto callback = crl::guard(controller, [=] {
 		if (const auto item = owner->message(itemId)) {
 			if (asGroup) {
 				if (const auto group = owner->groups().find(item)) {
@@ -519,7 +520,7 @@ bool AddDeleteMessageAction(
 			}
 			if (const auto message = item->toHistoryMessage()) {
 				if (message->uploading()) {
-					App::main()->cancelUploadLayer(item);
+					controller->content()->cancelUploadLayer(item);
 					return;
 				}
 			}
@@ -527,6 +528,7 @@ bool AddDeleteMessageAction(
 			Ui::show(Box<DeleteMessagesBox>(item, suggestModerateActions));
 		}
 	});
+	menu->addAction(tr::lng_context_delete_msg(tr::now), callback);
 	return true;
 }
 
diff --git a/Telegram/SourceFiles/history/view/history_view_list_widget.cpp b/Telegram/SourceFiles/history/view/history_view_list_widget.cpp
index c93c0128e..84b8ba105 100644
--- a/Telegram/SourceFiles/history/view/history_view_list_widget.cpp
+++ b/Telegram/SourceFiles/history/view/history_view_list_widget.cpp
@@ -305,6 +305,10 @@ Main::Session &ListWidget::session() const {
 	return _controller->session();
 }
 
+not_null<Window::SessionController*> ListWidget::controller() const {
+	return _controller;
+}
+
 not_null<ListDelegate*> ListWidget::delegate() const {
 	return _delegate;
 }
diff --git a/Telegram/SourceFiles/history/view/history_view_list_widget.h b/Telegram/SourceFiles/history/view/history_view_list_widget.h
index 877d986f1..a36122faa 100644
--- a/Telegram/SourceFiles/history/view/history_view_list_widget.h
+++ b/Telegram/SourceFiles/history/view/history_view_list_widget.h
@@ -137,9 +137,9 @@ public:
 		not_null<Window::SessionController*> controller,
 		not_null<ListDelegate*> delegate);
 
-	Main::Session &session() const;
-
-	not_null<ListDelegate*> delegate() const;
+	[[nodiscard]] Main::Session &session() const;
+	[[nodiscard]] not_null<Window::SessionController*> controller() const;
+	[[nodiscard]] not_null<ListDelegate*> delegate() const;
 
 	// Set the correct scroll position after being resized.
 	void restoreScrollPosition();
@@ -437,8 +437,8 @@ private:
 
 	static constexpr auto kMinimalIdsLimit = 24;
 
-	not_null<ListDelegate*> _delegate;
-	not_null<Window::SessionController*> _controller;
+	const not_null<ListDelegate*> _delegate;
+	const not_null<Window::SessionController*> _controller;
 	Data::MessagePosition _aroundPosition;
 	Data::MessagePosition _shownAtPosition;
 	Context _context;
diff --git a/Telegram/SourceFiles/history/view/history_view_message.cpp b/Telegram/SourceFiles/history/view/history_view_message.cpp
index 6027b62cd..049b5decb 100644
--- a/Telegram/SourceFiles/history/view/history_view_message.cpp
+++ b/Telegram/SourceFiles/history/view/history_view_message.cpp
@@ -1668,8 +1668,10 @@ ClickHandlerPtr Message::fastReplyLink() const {
 		const auto itemId = data()->fullId();
 		_fastReplyLink = std::make_shared<LambdaClickHandler>([=] {
 			if (const auto item = owner->message(itemId)) {
-				if (const auto main = App::main()) {
-					main->replyToItem(item);
+				if (const auto main = App::main()) { // multi good
+					if (&main->session() == &owner->session()) {
+						main->replyToItem(item);
+					}
 				}
 			}
 		});
diff --git a/Telegram/SourceFiles/mainwidget.cpp b/Telegram/SourceFiles/mainwidget.cpp
index 931dbd9f6..44f0e04db 100644
--- a/Telegram/SourceFiles/mainwidget.cpp
+++ b/Telegram/SourceFiles/mainwidget.cpp
@@ -1108,7 +1108,7 @@ void MainWidget::onSendFileConfirm(
 	_history->sendFileConfirmed(file, oldId);
 }
 
-bool MainWidget::onSendSticker(DocumentData *document) {
+bool MainWidget::sendExistingDocument(not_null<DocumentData*> document) {
 	return _history->sendExistingDocument(document);
 }
 
diff --git a/Telegram/SourceFiles/mainwidget.h b/Telegram/SourceFiles/mainwidget.h
index fb843bf7a..e56b78b2a 100644
--- a/Telegram/SourceFiles/mainwidget.h
+++ b/Telegram/SourceFiles/mainwidget.h
@@ -166,7 +166,7 @@ public:
 	void onSendFileConfirm(
 		const std::shared_ptr<FileLoadResult> &file,
 		const std::optional<FullMsgId> &oldId);
-	bool onSendSticker(DocumentData *sticker);
+	bool sendExistingDocument(not_null<DocumentData*> sticker);
 
 	bool isActive() const;
 	[[nodiscard]] bool doWeMarkAsRead() const;
diff --git a/Telegram/SourceFiles/media/view/media_view_overlay_widget.cpp b/Telegram/SourceFiles/media/view/media_view_overlay_widget.cpp
index 6271f0cb3..454888403 100644
--- a/Telegram/SourceFiles/media/view/media_view_overlay_widget.cpp
+++ b/Telegram/SourceFiles/media/view/media_view_overlay_widget.cpp
@@ -1444,6 +1444,10 @@ void OverlayWidget::onForward() {
 	if (!_session) {
 		return;
 	}
+	const auto &active = _session->windows();
+	if (active.empty()) {
+		return;
+	}
 	const auto item = _session->data().message(_msgid);
 	if (!item || !IsServerMsgId(item->id) || item->serviceMsg()) {
 		return;
@@ -1451,7 +1455,7 @@ void OverlayWidget::onForward() {
 
 	close();
 	Window::ShowForwardMessagesBox(
-		App::wnd()->sessionController(),
+		active.front(),
 		{ 1, item->fullId() });
 }
 
@@ -1474,8 +1478,12 @@ void OverlayWidget::onDelete() {
 		return false;
 	};
 
+	const auto &active = _session->windows();
+	if (active.empty()) {
+		return;
+	}
 	if (deletingPeerPhoto()) {
-		App::main()->deletePhotoLayer(_photo);
+		active.front()->content()->deletePhotoLayer(_photo);
 	} else if (const auto item = session->data().message(_msgid)) {
 		const auto suggestModerateActions = true;
 		Ui::show(Box<DeleteMessagesBox>(item, suggestModerateActions));
diff --git a/Telegram/SourceFiles/platform/mac/mac_touchbar.mm b/Telegram/SourceFiles/platform/mac/mac_touchbar.mm
index a6c913fe9..e6cb2017f 100644
--- a/Telegram/SourceFiles/platform/mac/mac_touchbar.mm
+++ b/Telegram/SourceFiles/platform/mac/mac_touchbar.mm
@@ -602,18 +602,20 @@ void AppendEmojiPacks(
 }
 
 - (void) buttonActionPin:(NSButton *)sender {
+	const auto active = Core::App().activeWindow();
+	const auto controller = active ? active->sessionController() : nullptr;
 	const auto openFolder = [=] {
-		if (!App::wnd()) {
+		if (!controller) {
 			return;
 		}
 		if (const auto folder = _session->data().folderLoaded(Data::Folder::kId)) {
-			App::wnd()->sessionController()->openFolder(folder);
+			controller->openFolder(folder);
 		}
 	};
 	Core::Sandbox::Instance().customEnterFromEventLoop([=] {
 		self.number == kArchiveId
 			? openFolder()
-			: App::main()->choosePeer(self.number == kSavedMessagesId
+			: controller->content()->choosePeer(self.number == kSavedMessagesId
 				? _session->userPeerId()
 				: self.peer->id, ShowAtUnreadMsgId);
 	});
@@ -1477,6 +1479,8 @@ void AppendEmojiPacks(
 - (void) buttonAction:(NSButton *)sender {
 	const auto command = sender.tag;
 
+	const auto active = Core::App().activeWindow();
+	const auto controller = active ? active->sessionController() : nullptr;
 	Core::Sandbox::Instance().customEnterFromEventLoop([=] {
 		switch (command) {
 		case kCommandPlayPause:
@@ -1489,7 +1493,7 @@ void AppendEmojiPacks(
 			Media::Player::instance()->next(kSongType);
 			break;
 		case kCommandClosePlayer:
-			App::main()->closeBothPlayers();
+			controller->content()->closeBothPlayers();
 			break;
 		}
 	});
diff --git a/Telegram/SourceFiles/settings/settings_chat.cpp b/Telegram/SourceFiles/settings/settings_chat.cpp
index 0cf56d137..707a6b254 100644
--- a/Telegram/SourceFiles/settings/settings_chat.cpp
+++ b/Telegram/SourceFiles/settings/settings_chat.cpp
@@ -384,6 +384,7 @@ private:
 	crl::time radialTimeShift() const;
 	void radialAnimationCallback(crl::time now);
 
+	const not_null<Window::SessionController*> _controller;
 	QPixmap _background;
 	object_ptr<Ui::LinkButton> _chooseFromGallery;
 	object_ptr<Ui::LinkButton> _chooseFromFile;
@@ -400,6 +401,7 @@ BackgroundRow::BackgroundRow(
 	QWidget *parent,
 	not_null<Window::SessionController*> controller)
 : RpWidget(parent)
+, _controller(controller)
 , _chooseFromGallery(
 	this,
 	tr::lng_settings_bg_from_gallery(tr::now),
@@ -433,7 +435,7 @@ void BackgroundRow::paintEvent(QPaintEvent *e) {
 	const auto radial = _radial.animating();
 	const auto radialOpacity = radial ? _radial.opacity() : 0.;
 	if (radial) {
-		const auto backThumb = App::main()->newBackgroundThumb();
+		const auto backThumb = _controller->content()->newBackgroundThumb();
 		if (!backThumb) {
 			p.drawPixmap(0, 0, _background);
 		} else {
@@ -494,14 +496,14 @@ int BackgroundRow::resizeGetHeight(int newWidth) {
 }
 
 float64 BackgroundRow::radialProgress() const {
-	return App::main()->chatBackgroundProgress();
+	return _controller->content()->chatBackgroundProgress();
 }
 
 bool BackgroundRow::radialLoading() const {
-	const auto main = App::main();
-	if (main->chatBackgroundLoading()) {
-		main->checkChatBackground();
-		if (main->chatBackgroundLoading()) {
+	const auto widget = _controller->content();
+	if (widget->chatBackgroundLoading()) {
+		widget->checkChatBackground();
+		if (widget->chatBackgroundLoading()) {
 			return true;
 		} else {
 			const_cast<BackgroundRow*>(this)->updateImage();
@@ -788,9 +790,7 @@ void SetupMessages(
 
 	group->setChangedCallback([=](SendByType value) {
 		controller->session().settings().setSendSubmitWay(value);
-		if (App::main()) {
-			App::main()->ctrlEnterSubmitUpdated();
-		}
+		controller->content()->ctrlEnterSubmitUpdated();
 		controller->session().saveSettingsDelayed();
 	});
 
diff --git a/Telegram/SourceFiles/settings/settings_privacy_controllers.cpp b/Telegram/SourceFiles/settings/settings_privacy_controllers.cpp
index 97a1ab4bb..93aa24c59 100644
--- a/Telegram/SourceFiles/settings/settings_privacy_controllers.cpp
+++ b/Telegram/SourceFiles/settings/settings_privacy_controllers.cpp
@@ -246,7 +246,8 @@ void BlockedBoxController::loadMoreRows() {
 }
 
 void BlockedBoxController::rowClicked(not_null<PeerListRow*> row) {
-	InvokeQueued(App::main(), [peerId = row->peer()->id] {
+	const auto peer = row->peer();
+	crl::on_main(&peer->session(), [peerId = peer->id] {
 		Ui::showPeerHistory(peerId, ShowAtUnreadMsgId);
 	});
 }
diff --git a/Telegram/SourceFiles/window/window_peer_menu.cpp b/Telegram/SourceFiles/window/window_peer_menu.cpp
index 40a2ca3b9..62ba85845 100644
--- a/Telegram/SourceFiles/window/window_peer_menu.cpp
+++ b/Telegram/SourceFiles/window/window_peer_menu.cpp
@@ -170,7 +170,9 @@ bool PinnedLimitReached(Dialogs::Key key, FilterId filterId) {
 	return true;
 }
 
-void TogglePinnedDialog(Dialogs::Key key) {
+void TogglePinnedDialog(
+		not_null<Window::SessionController*> controller,
+		Dialogs::Key key) {
 	if (!key.entry()->folderKnown()) {
 		return;
 	}
@@ -198,15 +200,16 @@ void TogglePinnedDialog(Dialogs::Key key) {
 		)).send();
 	}
 	if (isPinned) {
-		if (const auto main = App::main()) {
-			main->dialogsToUp();
-		}
+		controller->content()->dialogsToUp();
 	}
 }
 
-void TogglePinnedDialog(Dialogs::Key key, FilterId filterId) {
+void TogglePinnedDialog(
+		not_null<Window::SessionController*> controller,
+		Dialogs::Key key,
+		FilterId filterId) {
 	if (!filterId) {
-		return TogglePinnedDialog(key);
+		return TogglePinnedDialog(controller, key);
 	}
 	const auto owner = &key.entry()->owner();
 
@@ -227,9 +230,7 @@ void TogglePinnedDialog(Dialogs::Key key, FilterId filterId) {
 	owner->setChatPinned(key, filterId, isPinned);
 	Api::SaveNewFilterPinned(&owner->session(), filterId);
 	if (isPinned) {
-		if (const auto main = App::main()) {
-			main->dialogsToUp();
-		}
+		controller->content()->dialogsToUp();
 	}
 }
 
@@ -315,7 +316,10 @@ void Filler::addTogglePin() {
 			: tr::lng_context_pin_to_top(tr::now);
 	};
 	const auto pinToggle = [=] {
-		TogglePinnedDialog(peer->owner().history(peer), filterId);
+		TogglePinnedDialog(
+			_controller,
+			peer->owner().history(peer),
+			filterId);
 	};
 	const auto pinAction = _addAction(pinText(isPinned), pinToggle);
 
@@ -344,8 +348,10 @@ void Filler::addInfo() {
 }
 
 //void Filler::addSearch() {
-//	_addAction(tr::lng_profile_search_messages(tr::now), [peer = _peer] {
-//		App::main()->searchInChat(peer->owner().history(peer));
+//	const auto controller = _controller;
+//	const auto peer = _peer;
+//	_addAction(tr::lng_profile_search_messages(tr::now), [=] {
+//		controller->content()->searchInChat(peer->owner().history(peer));
 //	});
 //}
 
@@ -689,8 +695,8 @@ void FolderFiller::addTogglesForArchive() {
 }
 //
 //void FolderFiller::addInfo() {
-//	auto controller = _controller;
-//	auto feed = _feed;
+//	const auto controller = _controller;
+//	const auto feed = _feed;
 //	_addAction(tr::lng_context_view_feed_info(tr::now), [=] {
 //		controller->showSection(Info::Memento(
 //			feed,
@@ -707,8 +713,9 @@ void FolderFiller::addTogglesForArchive() {
 //
 //void FolderFiller::addSearch() {
 //	const auto feed = _feed;
+//	const auto controller = _controller;
 //	_addAction(tr::lng_profile_search_messages(tr::now), [=] {
-//		App::main()->searchInChat(feed);
+//		controller->content()->searchInChat(feed);
 //	});
 //}
 //