diff --git a/src/blackcore/application.cpp b/src/blackcore/application.cpp
index 0ae3ae972..4c09748a2 100644
--- a/src/blackcore/application.cpp
+++ b/src/blackcore/application.cpp
@@ -648,9 +648,13 @@ namespace BlackCore
             multiPart->moveToThread(m_accessManager->thread());
         }
 
-        return httpRequestImpl(request, logId, callback, NoRedirects, [ this, multiPart ](QNetworkAccessManager & qam, const QNetworkRequest & request)
+        QPointer<CApplication> myself(this);
+        return httpRequestImpl(request, logId, callback, NoRedirects, [ = ](QNetworkAccessManager & qam, const QNetworkRequest & request)
         {
-            QNetworkReply *nr = qam.post(request, multiPart);
+            QNetworkReply *nr = nullptr;
+            if (!myself) { return nr; }
+            if (!multiPart) { return nr; }
+            nr = qam.post(request, multiPart);
             multiPart->setParent(nr);
             return nr;
         });
diff --git a/src/blackcore/context/contextapplication.cpp b/src/blackcore/context/contextapplication.cpp
index 5316fe256..05771b494 100644
--- a/src/blackcore/context/contextapplication.cpp
+++ b/src/blackcore/context/contextapplication.cpp
@@ -51,29 +51,37 @@ namespace BlackCore
             CContext(mode, runtime)
         {
             if (mode == CCoreFacadeConfig::NotUsed) { return; }
-            connect(CLogHandler::instance(), &CLogHandler::localMessageLogged, this, [this](const CStatusMessage & message)
+            QPointer<IContextApplication> myself(this);
+
+            connect(CLogHandler::instance(), &CLogHandler::localMessageLogged, this, [ = ](const CStatusMessage & message)
             {
+                if (!myself) { return; }
                 this->logMessage(message, {});
             });
-            connect(CLogHandler::instance(), &CLogHandler::subscriptionAdded, this, [this](const CLogPattern & pattern)
+            connect(CLogHandler::instance(), &CLogHandler::subscriptionAdded, this, [ = ](const CLogPattern & pattern)
             {
+                if (!myself) { return; }
                 this->addLogSubscription({}, pattern);
             });
-            connect(CLogHandler::instance(), &CLogHandler::subscriptionRemoved, this, [this](const CLogPattern & pattern)
+            connect(CLogHandler::instance(), &CLogHandler::subscriptionRemoved, this, [ = ](const CLogPattern & pattern)
             {
+                if (!myself) { return; }
                 this->removeLogSubscription({}, pattern);
             });
-            connect(this, &IContextApplication::logSubscriptionAdded, this, [this](const CIdentifier & subscriber, const CLogPattern & pattern)
+            connect(this, &IContextApplication::logSubscriptionAdded, this, [ = ](const CIdentifier & subscriber, const CLogPattern & pattern)
             {
-                this->m_logSubscriptions[subscriber].push_back(pattern);
+                if (!myself) { return; }
+                m_logSubscriptions[subscriber].push_back(pattern);
             });
-            connect(this, &IContextApplication::logSubscriptionRemoved, this, [this](const CIdentifier & subscriber, const CLogPattern & pattern)
+            connect(this, &IContextApplication::logSubscriptionRemoved, this, [ = ](const CIdentifier & subscriber, const CLogPattern & pattern)
             {
-                this->m_logSubscriptions[subscriber].removeAll(pattern);
+                if (!myself) { return; }
+                m_logSubscriptions[subscriber].removeAll(pattern);
             });
 
-            connect(CSettingsCache::instance(), &CSettingsCache::valuesChangedByLocal, [this](const CValueCachePacket & settings)
+            connect(CSettingsCache::instance(), &CSettingsCache::valuesChangedByLocal, [ = ](const CValueCachePacket & settings)
             {
+                if (!myself) { return; }
                 this->changeSettings(settings, {});
             });
 
@@ -83,14 +91,15 @@ namespace BlackCore
                 CSettingsCache::instance()->changeValuesFromRemote(settings, origin);
             });
 
-            bool s = connect(CInputManager::instance(), &CInputManager::hotkeyActionRegistered, [this](const QStringList & actions)
+            bool s = connect(CInputManager::instance(), &CInputManager::hotkeyActionRegistered, [ = ](const QStringList & actions)
             {
+                if (!myself) { return; }
                 this->registerHotkeyActions(actions, {});
             });
             Q_ASSERT_X(s, Q_FUNC_INFO, "Connect hotkey action failed");
             Q_UNUSED(s);
 
-            s = connect(this, &IContextApplication::hotkeyActionsRegistered, [this](const QStringList & actions, const CIdentifier & origin)
+            s = connect(this, &IContextApplication::hotkeyActionsRegistered, [ = ](const QStringList & actions, const CIdentifier & origin)
             {
                 if (origin.hasApplicationProcessId()) { return; }
                 CInputManager::instance()->registerRemoteActions(actions);
@@ -98,15 +107,17 @@ namespace BlackCore
             Q_ASSERT_X(s, Q_FUNC_INFO, "Connect hotkey actions failed");
             Q_UNUSED(s);
 
-            s = connect(CInputManager::instance(), &CInputManager::remoteActionFromLocal, [this](const QString & action, bool argument)
+            s = connect(CInputManager::instance(), &CInputManager::remoteActionFromLocal, [ = ](const QString & action, bool argument)
             {
+                if (!myself) { return; }
                 this->callHotkeyAction(action, argument, {});
             });
             Q_ASSERT_X(s, Q_FUNC_INFO, "Connect remote action failed");
             Q_UNUSED(s);
 
-            s = connect(this, &IContextApplication::remoteHotkeyAction, [this](const QString & action, bool argument, const CIdentifier & origin)
+            s = connect(this, &IContextApplication::remoteHotkeyAction, [ = ](const QString & action, bool argument, const CIdentifier & origin)
             {
+                if (!myself) { return; }
                 if (origin.isFromLocalMachine()) { return; }
                 CInputManager::instance()->callFunctionsBy(action, argument);
                 CLogMessage(this, CLogCategory::contextSlot()).debug() << "Calling function" << action << "from origin" << origin.getMachineName();
diff --git a/src/blackgui/guiapplication.cpp b/src/blackgui/guiapplication.cpp
index 320abdb72..cbe2bf5ca 100644
--- a/src/blackgui/guiapplication.cpp
+++ b/src/blackgui/guiapplication.cpp
@@ -445,7 +445,8 @@ namespace BlackGui
         QMenu *sm = menu.addMenu(CIcons::appSettings16(), "Settings");
         sm->setIcon(CIcons::appSettings16());
         QAction *a = sm->addAction(CIcons::disk16(), "Settings directory");
-        bool c = connect(a, &QAction::triggered, this, [a, this]()
+        QPointer<CGuiApplication> myself(this);
+        bool c = connect(a, &QAction::triggered, this, [ = ]()
         {
             const QString path(QDir::toNativeSeparators(CSettingsCache::persistentStore()));
             if (QDir(path).exists())
@@ -456,25 +457,27 @@ namespace BlackGui
         Q_ASSERT_X(c, Q_FUNC_INFO, "Connect failed");
 
         a = sm->addAction("Reset settings");
-        c = connect(a, &QAction::triggered, this, [this]()
+        c = connect(a, &QAction::triggered, this, [ = ]
         {
+            if (myself.isNull()) { return; }
             CSettingsCache::instance()->clearAllValues();
-            this->displayTextInConsole("Cleared all settings!");
+            myself->displayTextInConsole("Cleared all settings!");
         });
         Q_ASSERT_X(c, Q_FUNC_INFO, "Connect failed");
 
         a = sm->addAction("List settings files");
-        c = connect(a, &QAction::triggered, this, [this]()
+        c = connect(a, &QAction::triggered, this, [ = ]()
         {
+            if (myself.isNull()) { return; }
             const QStringList files(CSettingsCache::instance()->enumerateStore());
-            this->displayTextInConsole(files.join("\n"));
+            myself->displayTextInConsole(files.join("\n"));
         });
         Q_ASSERT_X(c, Q_FUNC_INFO, "Connect failed");
 
         sm = menu.addMenu("Cache");
         sm->setIcon(CIcons::appSettings16());
         a = sm->addAction(CIcons::disk16(), "Cache directory");
-        c = connect(a, &QAction::triggered, this, [this]()
+        c = connect(a, &QAction::triggered, this, [ = ]()
         {
             const QString path(QDir::toNativeSeparators(CDataCache::persistentStore()));
             if (QDir(path).exists())
@@ -485,23 +488,25 @@ namespace BlackGui
         Q_ASSERT_X(c, Q_FUNC_INFO, "Connect failed");
 
         a = sm->addAction("Reset cache");
-        c = connect(a, &QAction::triggered, this, [this]()
+        c = connect(a, &QAction::triggered, this, [ = ]()
         {
+            if (myself.isNull()) { return; }
             const QStringList files = CApplication::clearCaches();
             this->displayTextInConsole("Cleared caches! " + QString::number(files.size()) + " files");
         });
         Q_ASSERT_X(c, Q_FUNC_INFO, "Connect failed");
 
         a = sm->addAction("List cache files");
-        c = connect(a, &QAction::triggered, this, [this]()
+        c = connect(a, &QAction::triggered, this, [ = ]()
         {
+            if (myself.isNull()) { return; }
             const QStringList files(CDataCache::instance()->enumerateStore());
-            this->displayTextInConsole(files.join("\n"));
+            myself->displayTextInConsole(files.join("\n"));
         });
         Q_ASSERT_X(c, Q_FUNC_INFO, "Connect failed");
 
         a = menu.addAction(CIcons::disk16(), "Log directory");
-        c = connect(a, &QAction::triggered, this, [this]()
+        c = connect(a, &QAction::triggered, this, [ = ]()
         {
             const QString path(QDir::toNativeSeparators(CDirectoryUtils::logDirectory()));
             if (QDir(path).exists())
@@ -519,18 +524,21 @@ namespace BlackGui
 
     void CGuiApplication::addMenuForStyleSheets(QMenu &menu)
     {
+        QPointer<CGuiApplication> myself(this);
         QMenu *sm = menu.addMenu("Style sheet");
         QAction *aReload = sm->addAction(CIcons::refresh16(), "Reload");
-        bool c = connect(aReload, &QAction::triggered, this, [aReload, this]()
+        bool c = connect(aReload, &QAction::triggered, this, [ = ]()
         {
-            this->reloadStyleSheets();
+            if (myself.isNull()) { return; }
+            myself->reloadStyleSheets();
         });
         Q_ASSERT_X(c, Q_FUNC_INFO, "Connect failed");
 
         QAction *aOpen = sm->addAction(CIcons::text16(), "Open qss file");
-        c = connect(aOpen, &QAction::triggered, this, [aOpen, this]()
+        c = connect(aOpen, &QAction::triggered, this, [ = ]()
         {
-            this->openStandardWidgetStyleSheet();
+            if (myself.isNull()) { return; }
+            myself->openStandardWidgetStyleSheet();
         });
         Q_ASSERT_X(c, Q_FUNC_INFO, "Connect failed");
         Q_UNUSED(c);
@@ -553,11 +561,13 @@ namespace BlackGui
         menu.addSeparator();
         a = menu.addAction("E&xit");
         a->setShortcut(QKeySequence(Qt::CTRL | Qt::Key_Q));
-        c = connect(a, &QAction::triggered, this, [a, this]()
+        QPointer<CGuiApplication> myself(this);
+        c = connect(a, &QAction::triggered, this, [ = ]()
         {
             // a close event might already trigger a shutdown
-            this->mainApplicationWidget()->close();
-            this->gracefulShutdown();
+            if (!myself) { return; }
+            myself->mainApplicationWidget()->close();
+            myself->gracefulShutdown();
         });
         Q_ASSERT_X(c, Q_FUNC_INFO, "Connect failed");
         Q_UNUSED(c);
@@ -565,38 +575,43 @@ namespace BlackGui
 
     void CGuiApplication::addMenuInternals(QMenu &menu)
     {
+        QPointer<CGuiApplication> myself(this);
         QMenu *sm = menu.addMenu("Templates");
         QAction *a = sm->addAction("JSON bootstrap");
-        bool c = connect(a, &QAction::triggered, this, [a, this]()
+        bool c = connect(a, &QAction::triggered, this, [ = ]()
         {
+            if (!myself) { return; }
             const CGlobalSetup s = this->getGlobalSetup();
             this->displayTextInConsole(s.toJsonString());
         });
         Q_ASSERT_X(c, Q_FUNC_INFO, "Connect failed");
 
         a = sm->addAction("JSON update info (for info only)");
-        c = connect(a, &QAction::triggered, this, [a, this]()
+        c = connect(a, &QAction::triggered, this, [ = ]()
         {
+            if (!myself) { return; }
             const CUpdateInfo info = this->getUpdateInfo();
-            this->displayTextInConsole(info.toJsonString());
+            myself->displayTextInConsole(info.toJsonString());
         });
         Q_ASSERT_X(c, Q_FUNC_INFO, "Connect failed");
 
         if (this->hasWebDataServices())
         {
             a = menu.addAction("Services log.(console)");
-            c = connect(a, &QAction::triggered, this, [a, this]()
+            c = connect(a, &QAction::triggered, this, [ = ]()
             {
-                this->displayTextInConsole(this->getWebDataServices()->getReadersLog());
+                if (!myself) { return; }
+                myself->displayTextInConsole(this->getWebDataServices()->getReadersLog());
                 CLogMessage(this).info("Displayed services log.");
             });
             Q_ASSERT_X(c, Q_FUNC_INFO, "Connect failed");
         }
 
         a = menu.addAction("Metadata (slow)");
-        c = connect(a, &QAction::triggered, this, [a, this]()
+        c = connect(a, &QAction::triggered, this, [ = ]()
         {
-            this->displayTextInConsole(getAllUserMetatypesTypes());
+            if (!myself) { return; }
+            myself->displayTextInConsole(getAllUserMetatypesTypes());
         });
         Q_ASSERT_X(c, Q_FUNC_INFO, "Connect failed");
         Q_UNUSED(c);
@@ -604,44 +619,44 @@ namespace BlackGui
 
     void CGuiApplication::addMenuWindow(QMenu &menu)
     {
-        QWidget *w = mainApplicationWidget();
+        QPointer<QWidget> w = mainApplicationWidget();
         if (!w) { return; }
         const QSize iconSize = CIcons::empty16().size();
         QPixmap icon = w->style()->standardIcon(QStyle::SP_TitleBarMaxButton).pixmap(iconSize);
         QAction *a = menu.addAction(icon.scaled(iconSize), "Fullscreen");
-        bool c = connect(a, &QAction::triggered, this, [a, w]()
+        bool c = connect(a, &QAction::triggered, this, [ = ]()
         {
+            if (!w) { return; }
             w->showFullScreen();
         });
         Q_ASSERT_X(c, Q_FUNC_INFO, "Connect failed");
 
         icon = w->style()->standardIcon(QStyle::SP_TitleBarMinButton).pixmap(iconSize);
         a = menu.addAction(icon.scaled(iconSize), "Minimize");
-        c = connect(a, &QAction::triggered, this, [a, w]()
+        c = connect(a, &QAction::triggered, this, [ = ]()
         {
+            if (!w) { return; }
             w->showMinimized();
         });
         Q_ASSERT_X(c, Q_FUNC_INFO, "Connect failed");
 
         icon = w->style()->standardIcon(QStyle::SP_TitleBarNormalButton).pixmap(iconSize);
         a = menu.addAction(icon.scaled(iconSize), "Normal");
-        c = connect(a, &QAction::triggered, this, [a, w]()
+        c = connect(a, &QAction::triggered, this, [ = ]()
         {
+            if (!w) { return; }
             w->showNormal();
         });
         Q_ASSERT_X(c, Q_FUNC_INFO, "Connect failed");
 
         a = menu.addAction("Toggle stay on top");
-        c = connect(a, &QAction::triggered, this, [a, w]()
+        c = connect(a, &QAction::triggered, this, [ = ]()
         {
-            if (CGuiUtility::toggleStayOnTop(w))
-            {
-                CLogMessage(w).info("Window on top");
-            }
-            else
-            {
-                CLogMessage(w).info("Window not always on top");
-            }
+            if (!w) { return; }
+            const bool onTop = CGuiUtility::toggleStayOnTop(w);
+            CLogMessage(w.data()).info(onTop ?
+                                       QStringLiteral("Window on top") :
+                                       QStringLiteral("Window not always on top"));
         });
         Q_ASSERT_X(c, Q_FUNC_INFO, "Connect failed");
         Q_UNUSED(c);
@@ -649,18 +664,22 @@ namespace BlackGui
 
     void CGuiApplication::addMenuHelp(QMenu &menu)
     {
-        QWidget *w = mainApplicationWidget();
+        QPointer<QWidget> w = mainApplicationWidget();
         if (!w) { return; }
         QAction *a = menu.addAction(w->style()->standardIcon(QStyle::SP_TitleBarContextHelpButton), "Online help");
-        bool c = connect(a, &QAction::triggered, this, [this]()
+        QPointer<CGuiApplication> myself(this);
+
+        bool c = connect(a, &QAction::triggered, this, [ = ]()
         {
-            this->showHelp();
+            if (!myself) { return; }
+            myself->showHelp();
         });
         Q_ASSERT_X(c, Q_FUNC_INFO, "Connect failed");
 
         a = menu.addAction(QApplication::windowIcon(), "About swift");
-        c = connect(a, &QAction::triggered, this, [w]()
+        c = connect(a, &QAction::triggered, this, [ = ]()
         {
+            if (!w) { return; }
             CAboutDialog dialog(w);
             dialog.exec();
         });
diff --git a/src/plugins/simulator/xplane/xswiftbusserviceproxy.cpp b/src/plugins/simulator/xplane/xswiftbusserviceproxy.cpp
index 34b76a10c..36993dfc7 100644
--- a/src/plugins/simulator/xplane/xswiftbusserviceproxy.cpp
+++ b/src/plugins/simulator/xplane/xswiftbusserviceproxy.cpp
@@ -11,6 +11,7 @@
 #include "simulatorxplane.h"
 
 #include <QLatin1String>
+#include <QPointer>
 
 class QDBusConnection;
 
@@ -28,8 +29,10 @@ namespace BlackSimPlugin
 
         void CXSwiftBusServiceProxy::getOwnAircraftSituationData(XPlaneData *o_xplaneData)
         {
-            std::function<void(QDBusPendingCallWatcher *)> callback = [this, o_xplaneData](QDBusPendingCallWatcher * watcher)
+            QPointer<CXSwiftBusServiceProxy> myself(this);
+            std::function<void(QDBusPendingCallWatcher *)> callback = [ = ](QDBusPendingCallWatcher * watcher)
             {
+                if (!myself) { return; }
                 QDBusPendingReply<double, double, double, double, double, double, double, double> reply = *watcher;
                 if (!reply.isError())
                 {