diff --git a/Furious/Action/Routing.py b/Furious/Action/Routing.py
index bc470c67..fd595f7d 100644
--- a/Furious/Action/Routing.py
+++ b/Furious/Action/Routing.py
@@ -173,7 +173,7 @@ class BuiltinRoutingChildAction(Action):
             # Activate
             APP().RoutesWidget.activateItemByIndex(routingToIndex(), activate=True)
 
-            if APP().tray.ConnectAction.isConnected():
+            if APP().isConnected():
                 # Connected. Re-configure connection
                 APP().tray.ConnectAction.connectingAction(
                     showProgressBar=True,
@@ -212,7 +212,7 @@ class RoutingChildAction(Action):
                         routingToIndex(), activate=True
                     )
 
-                    if APP().tray.ConnectAction.isConnected():
+                    if APP().isConnected():
                         # Connected. Re-configure connection
                         APP().tray.ConnectAction.connectingAction(
                             showProgressBar=True,
diff --git a/Furious/Action/Settings.py b/Furious/Action/Settings.py
index 769a20e6..f10612ca 100644
--- a/Furious/Action/Settings.py
+++ b/Furious/Action/Settings.py
@@ -85,28 +85,24 @@ class VPNModeAction(Action):
     def triggeredCallback(self, checked):
         assert isAdministrator()
 
-        # Reference
-        ConnectAction = APP().tray.ConnectAction
-
         if checked:
             APP().VPNMode = Switch.ON_
 
-            if ConnectAction.isConnected():
+            if APP().isConnected():
                 if isVPNMode():
                     if PLATFORM == 'Windows' or PLATFORM == 'Darwin':
                         # Currently VPN Mode is only supported on Windows and macOS
-                        ConnectAction.startTun2socks(
+                        APP().tray.ConnectAction.startTun2socks(
                             successCallback=lambda: APP().tray.showMessage(
                                 _('VPN mode started')
                             )
                         )
         else:
-            if ConnectAction.isConnected():
+            if APP().isConnected():
                 if isVPNMode():
                     if PLATFORM == 'Windows' or PLATFORM == 'Darwin':
                         # Currently VPN Mode is only supported on Windows and macOS
-                        ConnectAction.stopTun2socks()
-
+                        APP().tray.ConnectAction.stopTun2socks()
                         APP().tray.showMessage(_('VPN mode stopped'))
 
             APP().VPNMode = Switch.OFF
diff --git a/Furious/Widget/Application.py b/Furious/Widget/Application.py
index d2262bac..f1d1c2f2 100644
--- a/Furious/Widget/Application.py
+++ b/Furious/Widget/Application.py
@@ -337,6 +337,9 @@ class Application(SingletonApplication):
 
         return self
 
+    def isConnected(self):
+        return self.tray is not None and self.tray.ConnectAction.isConnected()
+
     @QtCore.Slot()
     def cleanup(self):
         Proxy.off()
diff --git a/Furious/Widget/EditConfiguration.py b/Furious/Widget/EditConfiguration.py
index 2bad4b52..083b93c4 100644
--- a/Furious/Widget/EditConfiguration.py
+++ b/Furious/Widget/EditConfiguration.py
@@ -398,7 +398,7 @@ class SaveAsServerAction(Action):
             if myFocusIndex == self.parent().activatedItemIndex:
                 # Activated configuration modified
 
-                if server and APP().tray.ConnectAction.isConnected():
+                if server and APP().isConnected():
                     questionReconnect(self.saveConfInfo)
 
             return True
@@ -2066,7 +2066,7 @@ class ServerWidget(Translatable, SupportConnectedCallback, TableWidget):
             # Set invalid first
             APP().ActivatedItemIndex = str(-1)
 
-            if APP().tray.ConnectAction.isConnected():
+            if APP().isConnected():
                 # Trigger disconnect
                 APP().tray.ConnectAction.trigger()
 
@@ -2341,7 +2341,7 @@ class ServerWidget(Translatable, SupportConnectedCallback, TableWidget):
         # Activate
         self.activateItemByIndex(newIndex, activate=True)
 
-        if APP().tray.ConnectAction.isConnected():
+        if APP().isConnected():
             APP().tray.ConnectAction.reconnectAction()
 
     @QtCore.Slot(QtCore.QPoint)
@@ -2660,7 +2660,7 @@ class EditConfigurationWidget(MainWindow):
             self.serverWidget.setCurrentItemByIndex(0)
 
             # Try to be user-friendly in some extreme cases
-            if not APP().tray.ConnectAction.isConnected():
+            if not APP().isConnected():
                 # Activate automatically
                 self.serverWidget.activateItemByIndex(0)
 
diff --git a/Furious/Widget/EditRouting.py b/Furious/Widget/EditRouting.py
index 64bf863c..f6138419 100644
--- a/Furious/Widget/EditRouting.py
+++ b/Furious/Widget/EditRouting.py
@@ -399,7 +399,7 @@ class SaveAction(Action):
             if parentIndex == routingToIndex() - len(BUILTIN_ROUTING):
                 # Activated routing modified
 
-                if APP().tray.ConnectAction.isConnected():
+                if APP().isConnected():
                     questionFastReconnect(self.saveConfInfo)
         else:
             # Corresponding routing option has been deleted. Fake saved
@@ -501,7 +501,7 @@ class EditRoutingAction(Action):
                     if parentIndex == routingToIndex() - len(BUILTIN_ROUTING):
                         # Activated routing modified
 
-                        if APP().tray.ConnectAction.isConnected():
+                        if APP().isConnected():
                             questionFastReconnect(self.saveConfInfo)
                 else:
                     # Restore
@@ -559,7 +559,7 @@ class RoutingEditor(MainWindow):
         self.isBuiltin = isBuiltin
         self.title = ''
 
-        if APP().tray is not None and APP().tray.ConnectAction.isConnected():
+        if APP().isConnected():
             self.setWindowIcon(bootstrapIcon('rocket-takeoff-connected-dark.svg'))
         else:
             self.setWindowIcon(bootstrapIcon('rocket-takeoff-window.svg'))
@@ -722,7 +722,7 @@ class RoutingDialog(Dialog):
 
         self.isBuiltin = isBuiltin
 
-        if APP().tray is not None and APP().tray.ConnectAction.isConnected():
+        if APP().isConnected():
             self.setWindowIcon(bootstrapIcon('rocket-takeoff-connected-dark.svg'))
         else:
             self.setWindowIcon(bootstrapIcon('rocket-takeoff-window.svg'))
diff --git a/Furious/Widget/Widget.py b/Furious/Widget/Widget.py
index dc8e5cb4..3599788e 100644
--- a/Furious/Widget/Widget.py
+++ b/Furious/Widget/Widget.py
@@ -212,7 +212,7 @@ class Menu(Translatable, SupportConnectedCallback, QMenu):
                 # Do nothing
                 pass
 
-        if APP().tray is not None and APP().tray.ConnectAction.isConnected():
+        if APP().isConnected():
             self.setStyleSheet(self.getStyleSheet(Color.LIGHT_RED_))
         else:
             self.setStyleSheet(self.getStyleSheet(Color.LIGHT_BLUE))
@@ -244,7 +244,7 @@ class MenuBar(SupportConnectedCallback, QMenuBar):
     def __init__(self, *args, **kwargs):
         super().__init__(*args, **kwargs)
 
-        if APP().tray is not None and APP().tray.ConnectAction.isConnected():
+        if APP().isConnected():
             self.setSelectionColor(Color.LIGHT_RED_)
         else:
             self.setSelectionColor(Color.LIGHT_BLUE)
@@ -363,14 +363,10 @@ class TableWidget(QTableWidget):
 
                 item.setFont(font)
 
-                if APP().tray is None:
-                    # Initializing
-                    item.setForeground(QColor(Color.LIGHT_BLUE))
+                if APP().isConnected():
+                    item.setForeground(QColor(Color.LIGHT_RED_))
                 else:
-                    if APP().tray.ConnectAction.isConnected():
-                        item.setForeground(QColor(Color.LIGHT_RED_))
-                    else:
-                        item.setForeground(QColor(Color.LIGHT_BLUE))
+                    item.setForeground(QColor(Color.LIGHT_BLUE))
         else:
             for column in range(self.columnCount()):
                 item = self.item(int(index), column)