diff --git a/Furious/Plugins/Official/Xray/GuiTUNSettings.py b/Furious/Plugins/Official/Xray/GuiTUNSettings.py
index 3245527..f87f72e 100644
--- a/Furious/Plugins/Official/Xray/GuiTUNSettings.py
+++ b/Furious/Plugins/Official/Xray/GuiTUNSettings.py
@@ -30,6 +30,7 @@ import copy
 import functools
 import logging
 
+from .Plugin import isXrayConnectionActive
 from .TUN import getXrayTUNSettings, saveXrayTUNSettings
 
 __all__ = ['GuiXrayTUNSettings']
@@ -245,7 +246,7 @@ class GuiXrayTUNSettings(GuiEditorWidgetQDialog):
             return
 
         saveXrayTUNSettings(self._settings)
-        if SystemRuntime.isTUNMode():
+        if SystemRuntime.isTUNMode() and isXrayConnectionActive():
             showMBoxNewChangesNextTime()
 
     @functools.lru_cache(None)
diff --git a/Furious/Plugins/Official/Xray/Plugin.py b/Furious/Plugins/Official/Xray/Plugin.py
index f5549e1..b3b2b22 100644
--- a/Furious/Plugins/Official/Xray/Plugin.py
+++ b/Furious/Plugins/Official/Xray/Plugin.py
@@ -44,7 +44,7 @@ from .TUN import (
     setXrayTUNEnabled,
 )
 
-__all__ = ['XrayPlugin']
+__all__ = ['XrayPlugin', 'isXrayConnectionActive']
 
 logger = logging.getLogger(__name__)
 
@@ -96,6 +96,22 @@ _TRANSLATABLE_ACTION_TEXT = [
 ]
 
 
+def isXrayConnectionActive() -> bool:
+    """Return whether the connected core process belongs to Xray-core."""
+    try:
+        connectAction = APP().systemTray.ConnectAction
+        if not connectAction.isConnected():
+            return False
+
+        return any(
+            isinstance(process, XrayCore)
+            for process in connectAction.coreManager.processesPool
+        )
+    except Exception:
+        # Plugin actions can be created before the tray is fully initialized.
+        return False
+
+
 class XrayPlugin(FuriousPlugin):
     """Provide official Xray-core support."""
 
@@ -219,7 +235,7 @@ class XrayPlugin(FuriousPlugin):
             """Persist the native Xray TUN action state."""
             setXrayTUNEnabled(useXrayTUNAction.isChecked())
 
-            if SystemRuntime.isTUNMode():
+            if SystemRuntime.isTUNMode() and isXrayConnectionActive():
                 showMBoxNewChangesNextTime()
 
         useXrayTUNAction.callback = updateUseXrayTUN