diff --git a/v2rayN/v2rayN/Handler/DownloadHandle.cs b/v2rayN/v2rayN/Handler/DownloadHandle.cs
index 663d5b5a..66ef31ba 100644
--- a/v2rayN/v2rayN/Handler/DownloadHandle.cs
+++ b/v2rayN/v2rayN/Handler/DownloadHandle.cs
@@ -4,7 +4,6 @@ using System.Net;
 using System.Net.Http;
 using System.Net.Http.Headers;
 using System.Net.Sockets;
-using System.Threading;
 using v2rayN.Base;
 using v2rayN.Resx;
 
diff --git a/v2rayN/v2rayN/Handler/SysProxyHandle.cs b/v2rayN/v2rayN/Handler/SysProxyHandle.cs
index aa99a4cd..44a25aec 100644
--- a/v2rayN/v2rayN/Handler/SysProxyHandle.cs
+++ b/v2rayN/v2rayN/Handler/SysProxyHandle.cs
@@ -79,10 +79,12 @@ namespace v2rayN.Handler
                             .Replace("{http_port}", port.ToString())
                             .Replace("{socks_port}", portSocks.ToString());
                     }
+                    ProxySetting.SetProxy(strProxy, strExceptions, 2);
                     SetIEProxy(true, strProxy, strExceptions);
                 }
                 else if (type == ESysProxyType.ForcedClear)
                 {
+                    ProxySetting.UnsetProxy();
                     ResetIEProxy();
                 }
                 else if (type == ESysProxyType.Unchanged)
@@ -92,6 +94,7 @@ namespace v2rayN.Handler
                 {
                     PacHandler.Start(Utils.GetConfigPath(), port, portPac);
                     var strProxy = $"{Global.httpProtocol}{Global.Loopback}:{portPac}/pac?t={DateTime.Now.Ticks}";
+                    ProxySetting.SetProxy(strProxy, "", 4);
                     SetIEProxy(false, strProxy, "");
                 }
 
@@ -129,22 +132,9 @@ namespace v2rayN.Handler
         }
 
         // set system proxy to 1 (null) (null) (null)
-        public static bool ResetIEProxy()
+        public static void ResetIEProxy()
         {
-            try
-            {
-                // clear user-wininet.json
-                //_userSettings = new SysproxyConfig();
-                //Save();
-                // clear system setting
-                ExecSysproxy("set 1 - - -");
-            }
-            catch (Exception)
-            {
-                return false;
-            }
-
-            return true;
+            ExecSysproxy("set 1 - - -");
         }
 
         private static void ExecSysproxy(string arguments)
diff --git a/v2rayN/v2rayN/Mode/SingboxConfig.cs b/v2rayN/v2rayN/Mode/SingboxConfig.cs
index 0ed7852a..dfcf0f4d 100644
--- a/v2rayN/v2rayN/Mode/SingboxConfig.cs
+++ b/v2rayN/v2rayN/Mode/SingboxConfig.cs
@@ -109,7 +109,7 @@
         public List<string> alpn { get; set; }
         public Utls4Sbox utls { get; set; }
         public Reality4Sbox reality { get; set; }
-    } 
+    }
 
     public class Multiplex4Sbox
     {
@@ -152,7 +152,7 @@
         public string strategy { get; set; }
         public string detour { get; set; }
     }
-    
+
     public class Experimental4Sbox
     {
         public V2ray_Api4Sbox v2ray_api { get; set; }
diff --git a/v2rayN/v2rayN/Views/OptionSettingWindow.xaml b/v2rayN/v2rayN/Views/OptionSettingWindow.xaml
index d02780f4..becc1e84 100644
--- a/v2rayN/v2rayN/Views/OptionSettingWindow.xaml
+++ b/v2rayN/v2rayN/Views/OptionSettingWindow.xaml
@@ -693,6 +693,7 @@
                             Grid.Column="1"
                             Width="300"
                             Margin="{StaticResource SettingItemMargin}"
+                            IsEditable="True"
                             Style="{StaticResource DefComboBox}" />
 
                         <TextBlock