diff --git a/Telegram/SourceFiles/boxes/language_box.cpp b/Telegram/SourceFiles/boxes/language_box.cpp
index 2471022acb..409ce10cee 100644
--- a/Telegram/SourceFiles/boxes/language_box.cpp
+++ b/Telegram/SourceFiles/boxes/language_box.cpp
@@ -7,6 +7,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 */
 #include "boxes/language_box.h"
 
+#include "data/data_peer_values.h"
 #include "lang/lang_keys.h"
 #include "ui/boxes/choose_language_box.h"
 #include "ui/widgets/checkbox.h"
@@ -24,8 +25,10 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "ui/text/text_options.h"
 #include "ui/painter.h"
 #include "storage/localstorage.h"
+#include "boxes/premium_preview_box.h"
 #include "boxes/translate_box.h"
 #include "ui/boxes/confirm_box.h"
+#include "main/main_session.h"
 #include "mainwidget.h"
 #include "mainwindow.h"
 #include "core/application.h"
@@ -33,6 +36,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "lang/lang_cloud_manager.h"
 #include "settings/settings_common.h"
 #include "spellcheck/spellcheck_types.h"
+#include "window/window_session_controller.h"
 #include "styles/style_layers.h"
 #include "styles/style_boxes.h"
 #include "styles/style_info.h"
@@ -1095,58 +1099,17 @@ Ui::ScrollToRequest Content::jump(int rows) {
 
 } // namespace
 
+LanguageBox::LanguageBox(QWidget*, Window::SessionController *controller)
+: _controller(controller) {
+}
+
 void LanguageBox::prepare() {
 	addButton(tr::lng_box_ok(), [=] { closeBox(); });
 
 	setTitle(tr::lng_languages());
 
 	const auto topContainer = Ui::CreateChild<Ui::VerticalLayout>(this);
-	Settings::AddSubsectionTitle(
-		topContainer,
-		tr::lng_translate_settings_subtitle());
-
-	const auto translateEnabled = Settings::AddButton(
-		topContainer,
-		tr::lng_translate_settings_show(),
-		st::settingsButtonNoIcon
-	)->toggleOn(rpl::single(Core::App().settings().translateButtonEnabled()));
-
-	translateEnabled->toggledValue(
-	) | rpl::filter([](bool checked) {
-		return (checked != Core::App().settings().translateButtonEnabled());
-	}) | rpl::start_with_next([=](bool checked) {
-		Core::App().settings().setTranslateButtonEnabled(checked);
-		Core::App().saveSettingsDelayed();
-	}, translateEnabled->lifetime());
-
-	using Languages = std::vector<LanguageId>;
-	const auto translateSkipWrap = topContainer->add(
-		object_ptr<Ui::SlideWrap<Ui::VerticalLayout>>(
-			topContainer,
-			object_ptr<Ui::VerticalLayout>(topContainer)));
-	translateSkipWrap->toggle(
-		translateEnabled->toggled(),
-		anim::type::normal);
-	translateSkipWrap->toggleOn(translateEnabled->toggledValue());
-	const auto translateSkip = Settings::AddButtonWithLabel(
-		translateSkipWrap->entity(),
-		tr::lng_translate_settings_choose(),
-		Core::App().settings().skipTranslationLanguagesValue(
-		) | rpl::map([](const Languages &list) {
-			return (list.size() > 1)
-				? tr::lng_languages_count(tr::now, lt_count, list.size())
-				: Ui::LanguageName(list.front());
-		}),
-		st::settingsButtonNoIcon);
-
-	translateSkip->setClickedCallback([=] {
-		Ui::BoxShow(this).showBox(Ui::EditSkipTranslationLanguages());
-	});
-	Settings::AddSkip(topContainer);
-	Settings::AddDividerText(
-		topContainer,
-		tr::lng_translate_settings_about());
-
+	setupTop(topContainer);
 	const auto select = topContainer->add(
 		object_ptr<Ui::MultiSelect>(
 			topContainer,
@@ -1210,6 +1173,86 @@ void LanguageBox::prepare() {
 	};
 }
 
+void LanguageBox::setupTop(not_null<Ui::VerticalLayout*> container) {
+	if (!_controller) {
+		return;
+	}
+	const auto translateEnabled = Settings::AddButton(
+		container,
+		tr::lng_translate_settings_show(),
+		st::settingsButtonNoIcon
+	)->toggleOn(
+		rpl::single(Core::App().settings().translateButtonEnabled()));
+
+	translateEnabled->toggledValue(
+	) | rpl::filter([](bool checked) {
+		return (checked != Core::App().settings().translateButtonEnabled());
+	}) | rpl::start_with_next([=](bool checked) {
+		Core::App().settings().setTranslateButtonEnabled(checked);
+		Core::App().saveSettingsDelayed();
+	}, translateEnabled->lifetime());
+
+	using namespace rpl::mappers;
+	auto premium = Data::AmPremiumValue(&_controller->session());
+	const auto translateChat = Settings::AddButton(
+		container,
+		tr::lng_translate_settings_chat(),
+		st::settingsButtonNoIconLocked
+	)->toggleOn(rpl::merge(
+		rpl::combine(
+			Core::App().settings().translateChatEnabledValue(),
+			rpl::duplicate(premium),
+			_1 && _2),
+		_translateChatTurnOff.events()));
+	std::move(premium) | rpl::start_with_next([=](bool value) {
+		translateChat->setToggleLocked(!value);
+	}, translateChat->lifetime());
+
+	translateChat->toggledValue(
+	) | rpl::filter([=](bool checked) {
+		const auto premium = _controller->session().premium();
+		if (checked && !premium) {
+			ShowPremiumPreviewToBuy(
+				_controller,
+				PremiumPreview::RealTimeTranslation);
+			_translateChatTurnOff.fire(false);
+		}
+		return premium
+			&& (checked != Core::App().settings().translateChatEnabled());
+	}) | rpl::start_with_next([=](bool checked) {
+		Core::App().settings().setTranslateChatEnabled(checked);
+		Core::App().saveSettingsDelayed();
+	}, translateChat->lifetime());
+
+	using Languages = std::vector<LanguageId>;
+	const auto translateSkipWrap = container->add(
+		object_ptr<Ui::SlideWrap<Ui::VerticalLayout>>(
+			container,
+			object_ptr<Ui::VerticalLayout>(container)));
+	translateSkipWrap->toggle(
+		translateEnabled->toggled(),
+		anim::type::normal);
+	translateSkipWrap->toggleOn(translateEnabled->toggledValue());
+	const auto translateSkip = Settings::AddButtonWithLabel(
+		translateSkipWrap->entity(),
+		tr::lng_translate_settings_choose(),
+		Core::App().settings().skipTranslationLanguagesValue(
+		) | rpl::map([](const Languages &list) {
+			return (list.size() > 1)
+				? tr::lng_languages_count(tr::now, lt_count, list.size())
+				: Ui::LanguageName(list.front());
+		}),
+		st::settingsButtonNoIcon);
+
+	translateSkip->setClickedCallback([=] {
+		Ui::BoxShow(this).showBox(Ui::EditSkipTranslationLanguages());
+	});
+	Settings::AddSkip(container);
+	Settings::AddDividerText(
+		container,
+		tr::lng_translate_settings_about());
+}
+
 void LanguageBox::keyPressEvent(QKeyEvent *e) {
 	const auto key = e->key();
 	if (key == Qt::Key_Escape) {
@@ -1241,11 +1284,12 @@ void LanguageBox::setInnerFocus() {
 	_setInnerFocus();
 }
 
-base::binary_guard LanguageBox::Show() {
+base::binary_guard LanguageBox::Show(Window::SessionController *controller) {
 	auto result = base::binary_guard();
 
 	auto &manager = Lang::CurrentCloudManager();
 	if (manager.languageList().empty()) {
+		const auto weak = base::make_weak(controller);
 		auto guard = std::make_shared<base::binary_guard>(
 			result.make_guard());
 		auto lifetime = std::make_shared<rpl::lifetime>();
@@ -1258,11 +1302,11 @@ base::binary_guard LanguageBox::Show() {
 				base::take(lifetime)->destroy();
 			}
 			if (show) {
-				Ui::show(Box<LanguageBox>());
+				Ui::show(Box<LanguageBox>(weak.get()));
 			}
 		}, *lifetime);
 	} else {
-		Ui::show(Box<LanguageBox>());
+		Ui::show(Box<LanguageBox>(controller));
 	}
 	manager.requestLanguageList();
 
diff --git a/Telegram/SourceFiles/boxes/language_box.h b/Telegram/SourceFiles/boxes/language_box.h
index 0727ad58aa..5e500b0bbd 100644
--- a/Telegram/SourceFiles/boxes/language_box.h
+++ b/Telegram/SourceFiles/boxes/language_box.h
@@ -16,16 +16,20 @@ struct LanguageId;
 namespace Ui {
 class MultiSelect;
 struct ScrollToRequest;
+class VerticalLayout;
 } // namespace Ui
 
+namespace Window {
+class SessionController;
+} // namespace Window
+
 class LanguageBox : public Ui::BoxContent {
 public:
-	LanguageBox(QWidget*) {
-	}
+	LanguageBox(QWidget*, Window::SessionController *controller);
 
 	void setInnerFocus() override;
 
-	static base::binary_guard Show();
+	static base::binary_guard Show(Window::SessionController *controller);
 
 protected:
 	void prepare() override;
@@ -35,8 +39,11 @@ protected:
 private:
 	using Languages = Lang::CloudManager::Languages;
 
-	int rowsInPage() const;
+	void setupTop(not_null<Ui::VerticalLayout*> container);
+	[[nodiscard]] int rowsInPage() const;
 
+	Window::SessionController *_controller = nullptr;
+	rpl::event_stream<bool> _translateChatTurnOff;
 	Fn<void()> _setInnerFocus;
 	Fn<Ui::ScrollToRequest(int rows)> _jump;
 
diff --git a/Telegram/SourceFiles/boxes/premium_preview_box.h b/Telegram/SourceFiles/boxes/premium_preview_box.h
index 3d16349b6c..0bf439d29b 100644
--- a/Telegram/SourceFiles/boxes/premium_preview_box.h
+++ b/Telegram/SourceFiles/boxes/premium_preview_box.h
@@ -62,7 +62,7 @@ void ShowPremiumPreviewBox(
 void ShowPremiumPreviewToBuy(
 	not_null<Window::SessionController*> controller,
 	PremiumPreview section,
-	Fn<void()> hiddenCallback);
+	Fn<void()> hiddenCallback = nullptr);
 
 void PremiumUnavailableBox(not_null<Ui::GenericBox*> box);
 
diff --git a/Telegram/SourceFiles/core/application.cpp b/Telegram/SourceFiles/core/application.cpp
index 7fe8068277..d19dd419e5 100644
--- a/Telegram/SourceFiles/core/application.cpp
+++ b/Telegram/SourceFiles/core/application.cpp
@@ -384,18 +384,22 @@ void Application::showAccount(not_null<Main::Account*> account) {
 		_lastActivePrimaryWindow = separate;
 		separate->activate();
 	} else if (const auto last = activePrimaryWindow()) {
-		for (auto &[key, window] : _primaryWindows) {
-			if (window.get() == last && key != account.get()) {
-				auto found = std::move(window);
-				_primaryWindows.remove(key);
-				_primaryWindows.emplace(account, std::move(found));
-				break;
-			}
-		}
 		last->showAccount(account);
 	}
 }
 
+void Application::checkWindowAccount(not_null<Window::Controller*> window) {
+	const auto account = window->maybeAccount();
+	for (auto &[key, existing] : _primaryWindows) {
+		if (existing.get() == window && key != account) {
+			auto found = std::move(existing);
+			_primaryWindows.remove(key);
+			_primaryWindows.emplace(account, std::move(found));
+			break;
+		}
+	}
+}
+
 void Application::showOpenGLCrashNotification() {
 	const auto enable = [=] {
 		Ui::GL::ForceDisable(false);
diff --git a/Telegram/SourceFiles/core/application.h b/Telegram/SourceFiles/core/application.h
index 4c24192cee..d4ed245a4f 100644
--- a/Telegram/SourceFiles/core/application.h
+++ b/Telegram/SourceFiles/core/application.h
@@ -181,6 +181,7 @@ public:
 	void checkSystemDarkMode();
 	[[nodiscard]] bool isActiveForTrayMenu() const;
 	void closeChatFromWindows(not_null<PeerData*> peer);
+	void checkWindowAccount(not_null<Window::Controller*> window);
 	void activate();
 
 	// Media view interface.
diff --git a/Telegram/SourceFiles/core/local_url_handlers.cpp b/Telegram/SourceFiles/core/local_url_handlers.cpp
index 34b02828ac..2e2034e025 100644
--- a/Telegram/SourceFiles/core/local_url_handlers.cpp
+++ b/Telegram/SourceFiles/core/local_url_handlers.cpp
@@ -113,9 +113,9 @@ bool ShowTheme(
 	return true;
 }
 
-void ShowLanguagesBox() {
+void ShowLanguagesBox(Window::SessionController *controller) {
 	static auto Guard = base::binary_guard();
-	Guard = LanguageBox::Show();
+	Guard = LanguageBox::Show(controller);
 }
 
 bool SetLanguage(
@@ -123,7 +123,7 @@ bool SetLanguage(
 		const Match &match,
 		const QVariant &context) {
 	if (match->capturedView(1).isEmpty()) {
-		ShowLanguagesBox();
+		ShowLanguagesBox(controller);
 	} else {
 		const auto languageId = match->captured(2);
 		Lang::CurrentCloudManager().switchWithWarning(languageId);
@@ -468,18 +468,12 @@ bool ResolveSettings(
 		Window::SessionController *controller,
 		const Match &match,
 		const QVariant &context) {
-	if (!controller) {
-		return false;
-	}
-	controller->window().activate();
 	const auto section = match->captured(1).mid(1).toLower();
-
 	const auto type = [&]() -> std::optional<::Settings::Type> {
 		if (section == u"language"_q) {
-			ShowLanguagesBox();
+			ShowLanguagesBox(controller);
 			return {};
 		} else if (section == u"devices"_q) {
-			controller->session().api().authorizations().reload();
 			return ::Settings::Sessions::Id();
 		} else if (section == u"folders"_q) {
 			return ::Settings::Folders::Id();
@@ -498,6 +492,11 @@ bool ResolveSettings(
 	}();
 
 	if (type.has_value()) {
+		if (!controller) {
+			return false;
+		} else if (*type == ::Settings::Sessions::Id()) {
+			controller->session().api().authorizations().reload();
+		}
 		controller->showSettings(*type);
 		controller->window().activate();
 	}
diff --git a/Telegram/SourceFiles/history/view/history_view_translate_tracker.cpp b/Telegram/SourceFiles/history/view/history_view_translate_tracker.cpp
index 716a11dfa4..7017ffe46e 100644
--- a/Telegram/SourceFiles/history/view/history_view_translate_tracker.cpp
+++ b/Telegram/SourceFiles/history/view/history_view_translate_tracker.cpp
@@ -57,7 +57,11 @@ void TranslateTracker::setup() {
 	const auto session = &_history->session();
 	peer->updateFull();
 
-	_trackingLanguage = Data::AmPremiumValue(&_history->session());
+	using namespace rpl::mappers;
+	_trackingLanguage = rpl::combine(
+		Data::AmPremiumValue(&_history->session()),
+		Core::App().settings().translateChatEnabledValue(),
+		_1 && _2);
 
 	_trackingLanguage.value(
 	) | rpl::start_with_next([=](bool tracking) {
diff --git a/Telegram/SourceFiles/mainwidget.cpp b/Telegram/SourceFiles/mainwidget.cpp
index 33788e077a..e6f4ba5c66 100644
--- a/Telegram/SourceFiles/mainwidget.cpp
+++ b/Telegram/SourceFiles/mainwidget.cpp
@@ -1278,7 +1278,7 @@ bool MainWidget::showHistoryInDifferentWindow(
 	} else if (isPrimary()) {
 		const auto primary = Core::App().separateWindowForAccount(
 			&peer->account());
-		if (primary != &_controller->window()) {
+		if (primary && primary != &_controller->window()) {
 			primary->sessionController()->showPeerHistory(
 				peerId,
 				params,
diff --git a/Telegram/SourceFiles/settings/settings.style b/Telegram/SourceFiles/settings/settings.style
index ebf77cdb6b..9c91a5aef7 100644
--- a/Telegram/SourceFiles/settings/settings.style
+++ b/Telegram/SourceFiles/settings/settings.style
@@ -22,6 +22,14 @@ settingsButtonLight: SettingsButton(settingsButton) {
 settingsButtonNoIcon: SettingsButton(settingsButton) {
 	padding: margins(22px, 10px, 22px, 8px);
 }
+settingsButtonNoIconLocked : SettingsButton(settingsButtonNoIcon) {
+	toggle: Toggle(infoProfileToggle) {
+		lockIcon: icon {{ "info/info_rights_lock", menuIconFg }};
+	}
+	toggleOver: Toggle(infoProfileToggleOver) {
+		lockIcon: icon {{ "info/info_rights_lock", menuIconFgOver }};
+	}
+}
 settingsButtonActive: SettingsButton(infoMainButton, settingsButton) {
 }
 settingsAttentionButton: SettingsButton(settingsButtonNoIcon) {
diff --git a/Telegram/SourceFiles/settings/settings_intro.cpp b/Telegram/SourceFiles/settings/settings_intro.cpp
index e067f47fc6..1facf1e3ae 100644
--- a/Telegram/SourceFiles/settings/settings_intro.cpp
+++ b/Telegram/SourceFiles/settings/settings_intro.cpp
@@ -63,7 +63,7 @@ object_ptr<Ui::RpWidget> CreateIntroSettings(
 
 	AddDivider(result);
 	AddSkip(result);
-	SetupLanguageButton(result, false);
+	SetupLanguageButton(window, result, false);
 	SetupConnectionType(window, &window->account(), result);
 	AddSkip(result);
 	if (HasUpdate()) {
diff --git a/Telegram/SourceFiles/settings/settings_main.cpp b/Telegram/SourceFiles/settings/settings_main.cpp
index 8485fff1a3..039a276d3e 100644
--- a/Telegram/SourceFiles/settings/settings_main.cpp
+++ b/Telegram/SourceFiles/settings/settings_main.cpp
@@ -251,6 +251,7 @@ void Cover::refreshUsernameGeometry(int newWidth) {
 } // namespace
 
 void SetupLanguageButton(
+		not_null<Window::Controller*> window,
 		not_null<Ui::VerticalLayout*> container,
 		bool icon) {
 	const auto button = AddButtonWithLabel(
@@ -269,7 +270,7 @@ void SetupLanguageButton(
 		if ((m & Qt::ShiftModifier) && (m & Qt::AltModifier)) {
 			Lang::CurrentCloudManager().switchToLanguage({ u"#custom"_q });
 		} else {
-			*guard = LanguageBox::Show();
+			*guard = LanguageBox::Show(window->sessionController());
 		}
 	});
 }
@@ -373,7 +374,7 @@ void SetupSections(
 		Calls::Id(),
 		{ &st::settingsIconCalls, kIconGreen });
 
-	SetupLanguageButton(container);
+	SetupLanguageButton(&controller->window(), container);
 
 	if (controller->session().premiumPossible()) {
 		AddSkip(container);
diff --git a/Telegram/SourceFiles/settings/settings_main.h b/Telegram/SourceFiles/settings/settings_main.h
index 9f00296ad4..4c1529d7d7 100644
--- a/Telegram/SourceFiles/settings/settings_main.h
+++ b/Telegram/SourceFiles/settings/settings_main.h
@@ -21,6 +21,7 @@ class VerticalLayout;
 namespace Settings {
 
 void SetupLanguageButton(
+	not_null<Window::Controller*> window,
 	not_null<Ui::VerticalLayout*> container,
 	bool icon = true);
 bool HasInterfaceScale();
diff --git a/Telegram/SourceFiles/window/window_controller.cpp b/Telegram/SourceFiles/window/window_controller.cpp
index b9ea7fc30b..25e62283fe 100644
--- a/Telegram/SourceFiles/window/window_controller.cpp
+++ b/Telegram/SourceFiles/window/window_controller.cpp
@@ -86,6 +86,7 @@ void Controller::showAccount(
 		: 0;
 	_accountLifetime.destroy();
 	_account = account;
+	Core::App().checkWindowAccount(this);
 
 	const auto updateOnlineOfPrevSesssion = crl::guard(_account, [=] {
 		if (!prevSessionUniqueId) {
diff --git a/Telegram/lib_spellcheck b/Telegram/lib_spellcheck
index 46385c3545..55ed1489ff 160000
--- a/Telegram/lib_spellcheck
+++ b/Telegram/lib_spellcheck
@@ -1 +1 @@
-Subproject commit 46385c35458d41ce589a75db51f320842794e31a
+Subproject commit 55ed1489ffac0b60adbd427c2b76be1ce55194e7