diff --git a/v2rayN/ServiceLib/Common/ProcUtils.cs b/v2rayN/ServiceLib/Common/ProcUtils.cs
new file mode 100644
index 00000000..65027a77
--- /dev/null
+++ b/v2rayN/ServiceLib/Common/ProcUtils.cs
@@ -0,0 +1,64 @@
+using System.Diagnostics;
+
+namespace ServiceLib.Common;
+
+public static class ProcUtils
+{
+    private static readonly string _tag = "ProcUtils";
+
+    public static void ProcessStart(string? fileName, string arguments = "")
+    {
+        ProcessStart(fileName, arguments, null);
+    }
+
+    public static int? ProcessStart(string? fileName, string arguments, string? dir)
+    {
+        if (fileName.IsNullOrEmpty())
+        {
+            return null;
+        }
+        try
+        {
+            if (fileName.Contains(' ')) fileName = fileName.AppendQuotes();
+            if (arguments.Contains(' ')) arguments = arguments.AppendQuotes();
+
+            Process process = new()
+            {
+                StartInfo = new ProcessStartInfo
+                {
+                    UseShellExecute = true,
+                    FileName = fileName,
+                    Arguments = arguments,
+                    WorkingDirectory = dir
+                }
+            };
+            process.Start();
+            return process.Id;
+        }
+        catch (Exception ex)
+        {
+            Logging.SaveLog(_tag, ex);
+        }
+        return null;
+    }
+
+    public static void RebootAsAdmin(bool blAdmin = true)
+    {
+        try
+        {
+            ProcessStartInfo startInfo = new()
+            {
+                UseShellExecute = true,
+                Arguments = Global.RebootAs,
+                WorkingDirectory = Utils.StartupPath(),
+                FileName = Utils.GetExePath().AppendQuotes(),
+                Verb = blAdmin ? "runas" : null,
+            };
+            Process.Start(startInfo);
+        }
+        catch (Exception ex)
+        {
+            Logging.SaveLog(_tag, ex);
+        }
+    }
+}
\ No newline at end of file
diff --git a/v2rayN/ServiceLib/Common/Utils.cs b/v2rayN/ServiceLib/Common/Utils.cs
index 5985fa9f..10a5302e 100644
--- a/v2rayN/ServiceLib/Common/Utils.cs
+++ b/v2rayN/ServiceLib/Common/Utils.cs
@@ -591,26 +591,6 @@ namespace ServiceLib.Common
             return Guid.TryParse(strSrc, out _);
         }
 
-        public static void ProcessStart(string? fileName, string arguments = "")
-        {
-            try
-            {
-                if (fileName.IsNullOrEmpty())
-                {
-                    return;
-                }
-
-                if (fileName.Contains(' ')) fileName = fileName.AppendQuotes();
-                if (arguments.Contains(' ')) arguments = arguments.AppendQuotes();
-
-                Process.Start(new ProcessStartInfo(fileName, arguments) { UseShellExecute = true });
-            }
-            catch (Exception ex)
-            {
-                Logging.SaveLog(_tag, ex);
-            }
-        }
-
         public static Dictionary<string, string> GetSystemHosts()
         {
             var systemHosts = new Dictionary<string, string>();
diff --git a/v2rayN/ServiceLib/ViewModels/AddServer2ViewModel.cs b/v2rayN/ServiceLib/ViewModels/AddServer2ViewModel.cs
index c0cfb32c..df84eef7 100644
--- a/v2rayN/ServiceLib/ViewModels/AddServer2ViewModel.cs
+++ b/v2rayN/ServiceLib/ViewModels/AddServer2ViewModel.cs
@@ -103,7 +103,7 @@ namespace ServiceLib.ViewModels
             address = Utils.GetConfigPath(address);
             if (File.Exists(address))
             {
-                Utils.ProcessStart(address);
+                ProcUtils.ProcessStart(address);
             }
             else
             {
diff --git a/v2rayN/ServiceLib/ViewModels/BackupAndRestoreViewModel.cs b/v2rayN/ServiceLib/ViewModels/BackupAndRestoreViewModel.cs
index 77230770..947bac03 100644
--- a/v2rayN/ServiceLib/ViewModels/BackupAndRestoreViewModel.cs
+++ b/v2rayN/ServiceLib/ViewModels/BackupAndRestoreViewModel.cs
@@ -130,11 +130,6 @@ namespace ServiceLib.ViewModels
                 DisplayOperationMsg(ResUI.LocalRestoreInvalidZipTips);
                 return;
             }
-            if (!Utils.UpgradeAppExists(out _))
-            {
-                DisplayOperationMsg(ResUI.UpgradeAppNotExistTip);
-                return;
-            }
 
             //backup first
             var fileBackup = Utils.GetBackupPath(BackupFileName);
@@ -150,12 +145,9 @@ namespace ServiceLib.ViewModels
 
                 if (Utils.IsWindows())
                 {
-                    service?.RebootAsAdmin(false);
-                }
-                else
-                {
-                    service?.Shutdown();
+                    ProcUtils.RebootAsAdmin(false);
                 }
+                service?.Shutdown();
             }
             else
             {
diff --git a/v2rayN/ServiceLib/ViewModels/MainWindowViewModel.cs b/v2rayN/ServiceLib/ViewModels/MainWindowViewModel.cs
index e8def23f..b052b6c7 100644
--- a/v2rayN/ServiceLib/ViewModels/MainWindowViewModel.cs
+++ b/v2rayN/ServiceLib/ViewModels/MainWindowViewModel.cs
@@ -1,9 +1,7 @@
 using ReactiveUI;
 using ReactiveUI.Fody.Helpers;
 using Splat;
-using System.Diagnostics;
 using System.Reactive;
-using System.Reactive.Linq;
 
 namespace ServiceLib.ViewModels
 {
@@ -319,20 +317,9 @@ namespace ServiceLib.ViewModels
                 return;
             }
 
-            Process process = new()
+            var id = ProcUtils.ProcessStart(fileName, arg, Utils.StartupPath());
+            if (id > 0)
             {
-                StartInfo = new ProcessStartInfo
-                {
-                    UseShellExecute = true,
-                    FileName = fileName,
-                    Arguments = arg.AppendQuotes(),
-                    WorkingDirectory = Utils.StartupPath()
-                }
-            };
-            process.Start();
-            if (process.Id > 0)
-            {
-                await MyAppExitAsync(false);
                 await MyAppExitAsync(false);
             }
         }
@@ -513,22 +500,10 @@ namespace ServiceLib.ViewModels
             }
         }
 
-        public async Task RebootAsAdmin(bool blAdmin = true)
+        public async Task RebootAsAdmin()
         {
-            try
-            {
-                ProcessStartInfo startInfo = new()
-                {
-                    UseShellExecute = true,
-                    Arguments = Global.RebootAs,
-                    WorkingDirectory = Utils.StartupPath(),
-                    FileName = Utils.GetExePath().AppendQuotes(),
-                    Verb = blAdmin ? "runas" : null,
-                };
-                Process.Start(startInfo);
-                await MyAppExitAsync(false);
-            }
-            catch { }
+            ProcUtils.RebootAsAdmin();
+            await MyAppExitAsync(false);
         }
 
         private async Task ClearServerStatistics()
@@ -542,15 +517,15 @@ namespace ServiceLib.ViewModels
             var path = Utils.StartupPath();
             if (Utils.IsWindows())
             {
-                Utils.ProcessStart(path);
+                ProcUtils.ProcessStart(path);
             }
             else if (Utils.IsLinux())
             {
-                Utils.ProcessStart("nautilus", path);
+                ProcUtils.ProcessStart("nautilus", path);
             }
             else if (Utils.IsOSX())
             {
-                Utils.ProcessStart("open", path);
+                ProcUtils.ProcessStart("open", path);
             }
         }
 
diff --git a/v2rayN/v2rayN.Desktop/Views/DNSSettingWindow.axaml.cs b/v2rayN/v2rayN.Desktop/Views/DNSSettingWindow.axaml.cs
index 56fed37d..55a12ac0 100644
--- a/v2rayN/v2rayN.Desktop/Views/DNSSettingWindow.axaml.cs
+++ b/v2rayN/v2rayN.Desktop/Views/DNSSettingWindow.axaml.cs
@@ -65,12 +65,12 @@ namespace v2rayN.Desktop.Views
 
         private void linkDnsObjectDoc_Click(object? sender, RoutedEventArgs e)
         {
-            Utils.ProcessStart("https://xtls.github.io/config/dns.html#dnsobject");
+            ProcUtils.ProcessStart("https://xtls.github.io/config/dns.html#dnsobject");
         }
 
         private void linkDnsSingboxObjectDoc_Click(object? sender, RoutedEventArgs e)
         {
-            Utils.ProcessStart("https://sing-box.sagernet.org/zh/configuration/dns/");
+            ProcUtils.ProcessStart("https://sing-box.sagernet.org/zh/configuration/dns/");
         }
     }
 }
\ No newline at end of file
diff --git a/v2rayN/v2rayN.Desktop/Views/MainWindow.axaml.cs b/v2rayN/v2rayN.Desktop/Views/MainWindow.axaml.cs
index 52c0fdc9..e73fda5d 100644
--- a/v2rayN/v2rayN.Desktop/Views/MainWindow.axaml.cs
+++ b/v2rayN/v2rayN.Desktop/Views/MainWindow.axaml.cs
@@ -330,12 +330,12 @@ namespace v2rayN.Desktop.Views
 
         private void menuPromotion_Click(object? sender, RoutedEventArgs e)
         {
-            Utils.ProcessStart($"{Utils.Base64Decode(Global.PromotionUrl)}?t={DateTime.Now.Ticks}");
+            ProcUtils.ProcessStart($"{Utils.Base64Decode(Global.PromotionUrl)}?t={DateTime.Now.Ticks}");
         }
 
         private void menuSettingsSetUWP_Click(object? sender, RoutedEventArgs e)
         {
-            Utils.ProcessStart(Utils.GetBinPath("EnableLoopback.exe"));
+            ProcUtils.ProcessStart(Utils.GetBinPath("EnableLoopback.exe"));
         }
 
         public async Task ScanScreenTaskAsync()
@@ -481,7 +481,7 @@ namespace v2rayN.Desktop.Views
         {
             if (sender is MenuItem item)
             {
-                Utils.ProcessStart(item.Tag?.ToString());
+                ProcUtils.ProcessStart(item.Tag?.ToString());
             }
         }
 
diff --git a/v2rayN/v2rayN.Desktop/Views/RoutingRuleDetailsWindow.axaml.cs b/v2rayN/v2rayN.Desktop/Views/RoutingRuleDetailsWindow.axaml.cs
index 3c2c4508..732ae00e 100644
--- a/v2rayN/v2rayN.Desktop/Views/RoutingRuleDetailsWindow.axaml.cs
+++ b/v2rayN/v2rayN.Desktop/Views/RoutingRuleDetailsWindow.axaml.cs
@@ -95,7 +95,7 @@ namespace v2rayN.Desktop.Views
 
         private void linkRuleobjectDoc_Click(object? sender, RoutedEventArgs e)
         {
-            Utils.ProcessStart("https://xtls.github.io/config/routing.html#ruleobject");
+            ProcUtils.ProcessStart("https://xtls.github.io/config/routing.html#ruleobject");
         }
     }
 }
\ No newline at end of file
diff --git a/v2rayN/v2rayN.Desktop/Views/RoutingRuleSettingWindow.axaml.cs b/v2rayN/v2rayN.Desktop/Views/RoutingRuleSettingWindow.axaml.cs
index deeba10d..d38f185f 100644
--- a/v2rayN/v2rayN.Desktop/Views/RoutingRuleSettingWindow.axaml.cs
+++ b/v2rayN/v2rayN.Desktop/Views/RoutingRuleSettingWindow.axaml.cs
@@ -203,7 +203,7 @@ namespace v2rayN.Desktop.Views
 
         private void linkCustomRulesetPath4Singbox(object? sender, RoutedEventArgs e)
         {
-            Utils.ProcessStart("https://github.com/2dust/v2rayCustomRoutingList/blob/master/singbox_custom_ruleset_example.json");
+            ProcUtils.ProcessStart("https://github.com/2dust/v2rayCustomRoutingList/blob/master/singbox_custom_ruleset_example.json");
         }
     }
 }
\ No newline at end of file
diff --git a/v2rayN/v2rayN.Desktop/Views/RoutingSettingWindow.axaml.cs b/v2rayN/v2rayN.Desktop/Views/RoutingSettingWindow.axaml.cs
index 15f5dd2f..749feebc 100644
--- a/v2rayN/v2rayN.Desktop/Views/RoutingSettingWindow.axaml.cs
+++ b/v2rayN/v2rayN.Desktop/Views/RoutingSettingWindow.axaml.cs
@@ -117,12 +117,12 @@ namespace v2rayN.Desktop.Views
 
         private void linkdomainStrategy_Click(object? sender, RoutedEventArgs e)
         {
-            Utils.ProcessStart("https://xtls.github.io/config/routing.html");
+            ProcUtils.ProcessStart("https://xtls.github.io/config/routing.html");
         }
 
         private void linkdomainStrategy4Singbox_Click(object? sender, RoutedEventArgs e)
         {
-            Utils.ProcessStart("https://sing-box.sagernet.org/zh/configuration/shared/listen/#domain_strategy");
+            ProcUtils.ProcessStart("https://sing-box.sagernet.org/zh/configuration/shared/listen/#domain_strategy");
         }
 
         private void btnCancel_Click(object? sender, RoutedEventArgs e)
diff --git a/v2rayN/v2rayN/Views/DNSSettingWindow.xaml.cs b/v2rayN/v2rayN/Views/DNSSettingWindow.xaml.cs
index 290021e0..56a8242d 100644
--- a/v2rayN/v2rayN/Views/DNSSettingWindow.xaml.cs
+++ b/v2rayN/v2rayN/Views/DNSSettingWindow.xaml.cs
@@ -66,12 +66,12 @@ namespace v2rayN.Views
 
         private void linkDnsObjectDoc_Click(object sender, RoutedEventArgs e)
         {
-            Utils.ProcessStart("https://xtls.github.io/config/dns.html#dnsobject");
+            ProcUtils.ProcessStart("https://xtls.github.io/config/dns.html#dnsobject");
         }
 
         private void linkDnsSingboxObjectDoc_Click(object sender, RoutedEventArgs e)
         {
-            Utils.ProcessStart("https://sing-box.sagernet.org/zh/configuration/dns/");
+            ProcUtils.ProcessStart("https://sing-box.sagernet.org/zh/configuration/dns/");
         }
     }
 }
\ No newline at end of file
diff --git a/v2rayN/v2rayN/Views/MainWindow.xaml.cs b/v2rayN/v2rayN/Views/MainWindow.xaml.cs
index c2e745f3..d91656a3 100644
--- a/v2rayN/v2rayN/Views/MainWindow.xaml.cs
+++ b/v2rayN/v2rayN/Views/MainWindow.xaml.cs
@@ -308,12 +308,12 @@ namespace v2rayN.Views
 
         private void menuPromotion_Click(object sender, RoutedEventArgs e)
         {
-            Utils.ProcessStart($"{Utils.Base64Decode(Global.PromotionUrl)}?t={DateTime.Now.Ticks}");
+            ProcUtils.ProcessStart($"{Utils.Base64Decode(Global.PromotionUrl)}?t={DateTime.Now.Ticks}");
         }
 
         private void menuSettingsSetUWP_Click(object sender, RoutedEventArgs e)
         {
-            Utils.ProcessStart(Utils.GetBinPath("EnableLoopback.exe"));
+            ProcUtils.ProcessStart(Utils.GetBinPath("EnableLoopback.exe"));
         }
 
         private async Task ScanScreenTaskAsync()
@@ -443,7 +443,7 @@ namespace v2rayN.Views
         {
             if (sender is MenuItem item)
             {
-                Utils.ProcessStart(item.Tag.ToString());
+                ProcUtils.ProcessStart(item.Tag.ToString());
             }
         }
 
diff --git a/v2rayN/v2rayN/Views/RoutingRuleDetailsWindow.xaml.cs b/v2rayN/v2rayN/Views/RoutingRuleDetailsWindow.xaml.cs
index 7262e2b7..5b6cca4c 100644
--- a/v2rayN/v2rayN/Views/RoutingRuleDetailsWindow.xaml.cs
+++ b/v2rayN/v2rayN/Views/RoutingRuleDetailsWindow.xaml.cs
@@ -89,7 +89,7 @@ namespace v2rayN.Views
 
         private void linkRuleobjectDoc_Click(object sender, RoutedEventArgs e)
         {
-            Utils.ProcessStart("https://xtls.github.io/config/routing.html#ruleobject");
+            ProcUtils.ProcessStart("https://xtls.github.io/config/routing.html#ruleobject");
         }
     }
 }
\ No newline at end of file
diff --git a/v2rayN/v2rayN/Views/RoutingRuleSettingWindow.xaml.cs b/v2rayN/v2rayN/Views/RoutingRuleSettingWindow.xaml.cs
index 64342617..4340b2f3 100644
--- a/v2rayN/v2rayN/Views/RoutingRuleSettingWindow.xaml.cs
+++ b/v2rayN/v2rayN/Views/RoutingRuleSettingWindow.xaml.cs
@@ -197,7 +197,7 @@ namespace v2rayN.Views
 
         private void linkCustomRulesetPath4Singbox(object sender, RoutedEventArgs e)
         {
-            Utils.ProcessStart("https://github.com/2dust/v2rayCustomRoutingList/blob/master/singbox_custom_ruleset_example.json");
+            ProcUtils.ProcessStart("https://github.com/2dust/v2rayCustomRoutingList/blob/master/singbox_custom_ruleset_example.json");
         }
     }
 }
\ No newline at end of file
diff --git a/v2rayN/v2rayN/Views/RoutingSettingWindow.xaml.cs b/v2rayN/v2rayN/Views/RoutingSettingWindow.xaml.cs
index 37b1c38a..39086ec4 100644
--- a/v2rayN/v2rayN/Views/RoutingSettingWindow.xaml.cs
+++ b/v2rayN/v2rayN/Views/RoutingSettingWindow.xaml.cs
@@ -122,12 +122,12 @@ namespace v2rayN.Views
 
         private void linkdomainStrategy_Click(object sender, System.Windows.RoutedEventArgs e)
         {
-            Utils.ProcessStart("https://xtls.github.io/config/routing.html");
+            ProcUtils.ProcessStart("https://xtls.github.io/config/routing.html");
         }
 
         private void linkdomainStrategy4Singbox_Click(object sender, RoutedEventArgs e)
         {
-            Utils.ProcessStart("https://sing-box.sagernet.org/zh/configuration/shared/listen/#domain_strategy");
+            ProcUtils.ProcessStart("https://sing-box.sagernet.org/zh/configuration/shared/listen/#domain_strategy");
         }
 
         private void btnCancel_Click(object sender, System.Windows.RoutedEventArgs e)