diff --git a/v2rayN/ServiceLib/Handler/SysProxy/ProxySettingWindows.cs b/v2rayN/ServiceLib/Handler/SysProxy/ProxySettingWindows.cs
index be11eae0..818ea3f3 100644
--- a/v2rayN/ServiceLib/Handler/SysProxy/ProxySettingWindows.cs
+++ b/v2rayN/ServiceLib/Handler/SysProxy/ProxySettingWindows.cs
@@ -69,7 +69,7 @@ namespace ServiceLib.Handler.SysProxy
                 }
                 return result;
             }
-            catch (Exception ex)
+            catch
             {
                 SetProxyFallback(strProxy, exceptions, type);
                 return false;
diff --git a/v2rayN/v2rayN.Desktop/Views/MainWindow.axaml.cs b/v2rayN/v2rayN.Desktop/Views/MainWindow.axaml.cs
index 43ff5cb8..e70a68ac 100644
--- a/v2rayN/v2rayN.Desktop/Views/MainWindow.axaml.cs
+++ b/v2rayN/v2rayN.Desktop/Views/MainWindow.axaml.cs
@@ -350,7 +350,7 @@ namespace v2rayN.Desktop.Views
             //ShowHideWindow(false);
 
             NoticeHandler.Instance.SendMessageAndEnqueue("Not yet implemented.(还未实现)");
-            return;
+            await Task.CompletedTask;
             //if (Application.Current?.ApplicationLifetime is IClassicDesktopStyleApplicationLifetime desktop)
             //{
             //    //var bytes = QRCodeHelper.CaptureScreen(desktop);
diff --git a/v2rayN/v2rayN.Desktop/Views/ProfilesView.axaml.cs b/v2rayN/v2rayN.Desktop/Views/ProfilesView.axaml.cs
index bc043e5e..be0072a8 100644
--- a/v2rayN/v2rayN.Desktop/Views/ProfilesView.axaml.cs
+++ b/v2rayN/v2rayN.Desktop/Views/ProfilesView.axaml.cs
@@ -219,7 +219,7 @@ namespace v2rayN.Desktop.Views
 
         private void LstProfiles_LoadingRow(object? sender, DataGridRowEventArgs e)
         {
-            e.Row.Header = $" {e.Row.GetIndex() + 1}";
+            e.Row.Header = $" {e.Row.Index + 1}";
         }
 
         //private void LstProfiles_ColumnHeader_Click(object? sender, RoutedEventArgs e)
diff --git a/v2rayN/v2rayN/App.xaml.cs b/v2rayN/v2rayN/App.xaml.cs
index 42c086fc..09988753 100644
--- a/v2rayN/v2rayN/App.xaml.cs
+++ b/v2rayN/v2rayN/App.xaml.cs
@@ -10,7 +10,6 @@ namespace v2rayN
     public partial class App : Application
     {
         public static EventWaitHandle ProgramStarted;
-        private static Config _config;
 
         public App()
         {
@@ -73,4 +72,4 @@ namespace v2rayN
             Process.GetCurrentProcess().Kill();
         }
     }
-}
\ No newline at end of file
+}