diff --git a/v2rayN/ServiceLib/Common/Utils.cs b/v2rayN/ServiceLib/Common/Utils.cs
index c6937911..585951bb 100644
--- a/v2rayN/ServiceLib/Common/Utils.cs
+++ b/v2rayN/ServiceLib/Common/Utils.cs
@@ -710,7 +710,7 @@ namespace ServiceLib.Common
 
         public static string StartupPath()
         {
-            if (Utils.IsLinux() && Environment.GetEnvironmentVariable("V2RAYN_LOCAL_APPLICATION_DATA") == "1")
+            if (Utils.IsNonWindows() && Environment.GetEnvironmentVariable("V2RAYN_LOCAL_APPLICATION_DATA") == "1")
             {
                 return Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData), "v2rayN");
             }
@@ -838,6 +838,8 @@ namespace ServiceLib.Common
 
         public static bool IsOSX() => RuntimeInformation.IsOSPlatform(OSPlatform.OSX);
 
+        public static bool IsNonWindows() => !RuntimeInformation.IsOSPlatform(OSPlatform.Windows);
+
         public static string GetExeName(string name)
         {
             return IsWindows() ? $"{name}.exe" : name;
diff --git a/v2rayN/ServiceLib/Handler/AppHandler.cs b/v2rayN/ServiceLib/Handler/AppHandler.cs
index c8e31186..31cb8b2e 100644
--- a/v2rayN/ServiceLib/Handler/AppHandler.cs
+++ b/v2rayN/ServiceLib/Handler/AppHandler.cs
@@ -46,7 +46,7 @@
 
         public bool InitApp()
         {
-            if (Utils.IsLinux() && Utils.HasWritePermission() == false)
+            if (Utils.IsNonWindows() && Utils.HasWritePermission() == false)
             {
                 Environment.SetEnvironmentVariable("V2RAYN_LOCAL_APPLICATION_DATA", "1", EnvironmentVariableTarget.Process);
             }
diff --git a/v2rayN/ServiceLib/Handler/CoreHandler.cs b/v2rayN/ServiceLib/Handler/CoreHandler.cs
index 60c7175a..5dc62332 100644
--- a/v2rayN/ServiceLib/Handler/CoreHandler.cs
+++ b/v2rayN/ServiceLib/Handler/CoreHandler.cs
@@ -24,7 +24,7 @@ namespace ServiceLib.Handler
             Environment.SetEnvironmentVariable("V2RAY_LOCATION_ASSET", Utils.GetBinPath(""), EnvironmentVariableTarget.Process);
             Environment.SetEnvironmentVariable("XRAY_LOCATION_ASSET", Utils.GetBinPath(""), EnvironmentVariableTarget.Process);
 
-            if (Utils.IsLinux() || Utils.IsOSX())
+            if (Utils.IsNonWindows())
             {
                 var coreInfo = CoreInfoHandler.Instance.GetCoreInfo();
                 foreach (var it in coreInfo)
@@ -221,7 +221,7 @@ namespace ServiceLib.Handler
         {
             return _config.TunModeItem.EnableTun
                    && eCoreType == ECoreType.sing_box
-                   && (Utils.IsLinux() || Utils.IsOSX())
+                   && (Utils.IsNonWindows())
                 //&& _config.TunModeItem.LinuxSudoPwd.IsNotEmpty()
                 ;
         }
diff --git a/v2rayN/ServiceLib/ViewModels/CheckUpdateViewModel.cs b/v2rayN/ServiceLib/ViewModels/CheckUpdateViewModel.cs
index dcfc122e..f4e31c09 100644
--- a/v2rayN/ServiceLib/ViewModels/CheckUpdateViewModel.cs
+++ b/v2rayN/ServiceLib/ViewModels/CheckUpdateViewModel.cs
@@ -262,7 +262,7 @@ namespace ServiceLib.ViewModels
                     FileManager.ZipExtractToFile(fileName, toPath, _config.GuiItem.IgnoreGeoUpdateCore ? "geo" : "");
                 }
 
-                if (Utils.IsLinux() || Utils.IsOSX())
+                if (Utils.IsNonWindows())
                 {
                     var filesList = (new DirectoryInfo(toPath)).GetFiles().Select(u => u.FullName).ToList();
                     foreach (var file in filesList)
diff --git a/v2rayN/v2rayN.Desktop/Views/OptionSettingWindow.axaml.cs b/v2rayN/v2rayN.Desktop/Views/OptionSettingWindow.axaml.cs
index 84270380..af27a10f 100644
--- a/v2rayN/v2rayN.Desktop/Views/OptionSettingWindow.axaml.cs
+++ b/v2rayN/v2rayN.Desktop/Views/OptionSettingWindow.axaml.cs
@@ -215,7 +215,7 @@ namespace v2rayN.Desktop.Views
                 {
                     return lstFonts;
                 }
-                else if (Utils.IsLinux() || Utils.IsOSX())
+                else if (Utils.IsNonWindows())
                 {
                     var result = await Utils.GetLinuxFontFamily("zh");
                     if (result.IsNullOrEmpty())