diff --git a/v2rayN/v2rayN/Common/ProxySetting.cs b/v2rayN/PacLib/ProxySettingWindows.cs
similarity index 88%
rename from v2rayN/v2rayN/Common/ProxySetting.cs
rename to v2rayN/PacLib/ProxySettingWindows.cs
index 1b102f5c..bbcb3775 100644
--- a/v2rayN/v2rayN/Common/ProxySetting.cs
+++ b/v2rayN/PacLib/ProxySettingWindows.cs
@@ -1,9 +1,12 @@
-using System.Runtime.InteropServices;
-using static v2rayN.Common.ProxySetting.InternetConnectionOption;
+using Microsoft.Win32;
+using System;
+using System.Collections.Generic;
+using System.Runtime.InteropServices;
+using static PacLib.ProxySettingWindows.InternetConnectionOption;
 
-namespace v2rayN.Common
+namespace PacLib
 {
-    internal class ProxySetting
+    public class ProxySettingWindows
     {
         private const string _regPath = @"Software\Microsoft\Windows\CurrentVersion\Internet Settings";
 
@@ -11,24 +14,24 @@ namespace v2rayN.Common
         {
             if (type == 1)
             {
-                WindowsUtils.RegWriteValue(_regPath, "ProxyEnable", 0);
-                WindowsUtils.RegWriteValue(_regPath, "ProxyServer", string.Empty);
-                WindowsUtils.RegWriteValue(_regPath, "ProxyOverride", string.Empty);
-                WindowsUtils.RegWriteValue(_regPath, "AutoConfigURL", string.Empty);
+                RegWriteValue(_regPath, "ProxyEnable", 0);
+                RegWriteValue(_regPath, "ProxyServer", string.Empty);
+                RegWriteValue(_regPath, "ProxyOverride", string.Empty);
+                RegWriteValue(_regPath, "AutoConfigURL", string.Empty);
             }
             if (type == 2)
             {
-                WindowsUtils.RegWriteValue(_regPath, "ProxyEnable", 1);
-                WindowsUtils.RegWriteValue(_regPath, "ProxyServer", strProxy ?? string.Empty);
-                WindowsUtils.RegWriteValue(_regPath, "ProxyOverride", exceptions ?? string.Empty);
-                WindowsUtils.RegWriteValue(_regPath, "AutoConfigURL", string.Empty);
+                RegWriteValue(_regPath, "ProxyEnable", 1);
+                RegWriteValue(_regPath, "ProxyServer", strProxy ?? string.Empty);
+                RegWriteValue(_regPath, "ProxyOverride", exceptions ?? string.Empty);
+                RegWriteValue(_regPath, "AutoConfigURL", string.Empty);
             }
             else if (type == 4)
             {
-                WindowsUtils.RegWriteValue(_regPath, "ProxyEnable", 0);
-                WindowsUtils.RegWriteValue(_regPath, "ProxyServer", string.Empty);
-                WindowsUtils.RegWriteValue(_regPath, "ProxyOverride", string.Empty);
-                WindowsUtils.RegWriteValue(_regPath, "AutoConfigURL", strProxy ?? string.Empty);
+                RegWriteValue(_regPath, "ProxyEnable", 0);
+                RegWriteValue(_regPath, "ProxyServer", string.Empty);
+                RegWriteValue(_regPath, "ProxyOverride", string.Empty);
+                RegWriteValue(_regPath, "AutoConfigURL", strProxy ?? string.Empty);
             }
             return true;
         }
@@ -72,7 +75,7 @@ namespace v2rayN.Common
             catch (Exception ex)
             {
                 SetProxyFallback(strProxy, exceptions, type);
-                Logging.SaveLog(ex.Message, ex);
+                //Logging.SaveLog(ex.Message, ex);
                 return false;
             }
         }
@@ -88,7 +91,7 @@ namespace v2rayN.Common
             }
             else if (type is 2 or 4) // named proxy or autoproxy script URL
             {
-                optionCount = Utils.IsNullOrEmpty(exceptions) ? 2 : 3;
+                optionCount = string.IsNullOrEmpty(exceptions) ? 2 : 3;
             }
 
             int m_Int = (int)PerConnFlags.PROXY_TYPE_DIRECT;
@@ -356,5 +359,30 @@ namespace v2rayN.Common
                 ref int lpcEntries        // Number of entries written to the buffer
             );
         }
+
+        private static void RegWriteValue(string path, string name, object value)
+        {
+            RegistryKey? regKey = null;
+            try
+            {
+                regKey = Registry.CurrentUser.CreateSubKey(path);
+                if (string.IsNullOrEmpty(value.ToString()))
+                {
+                    regKey?.DeleteValue(name, false);
+                }
+                else
+                {
+                    regKey?.SetValue(name, value);
+                }
+            }
+            catch (Exception ex)
+            {
+                //Logging.SaveLog(ex.Message, ex);
+            }
+            finally
+            {
+                regKey?.Close();
+            }
+        }
     }
 }
\ No newline at end of file
diff --git a/v2rayN/v2rayN.Desktop/Handler/SysProxyHandler.cs b/v2rayN/v2rayN.Desktop/Handler/SysProxyHandler.cs
index 8dc30d19..b635e97e 100644
--- a/v2rayN/v2rayN.Desktop/Handler/SysProxyHandler.cs
+++ b/v2rayN/v2rayN.Desktop/Handler/SysProxyHandler.cs
@@ -1,4 +1,5 @@
-using v2rayN.Desktop.Common;
+using PacLib;
+using v2rayN.Desktop.Common;
 
 namespace v2rayN.Desktop.Handler
 {
@@ -26,7 +27,25 @@ namespace v2rayN.Desktop.Handler
                 {
                     if (Utils.IsWindows())
                     {
-                        //TODO
+                        var strExceptions = "";
+                        if (config.systemProxyItem.notProxyLocalAddress)
+                        {
+                            strExceptions = $"<local>;{config.constItem.defIEProxyExceptions};{config.systemProxyItem.systemProxyExceptions}";
+                        }
+
+                        var strProxy = string.Empty;
+                        if (Utils.IsNullOrEmpty(config.systemProxyItem.systemProxyAdvancedProtocol))
+                        {
+                            strProxy = $"{Global.Loopback}:{port}";
+                        }
+                        else
+                        {
+                            strProxy = config.systemProxyItem.systemProxyAdvancedProtocol
+                                .Replace("{ip}", Global.Loopback)
+                                .Replace("{http_port}", port.ToString())
+                                .Replace("{socks_port}", portSocks.ToString());
+                        }
+                        ProxySettingWindows.SetProxy(strProxy, strExceptions, 2);
                     }
                     else if (Utils.IsLinux())
                     {
@@ -41,7 +60,7 @@ namespace v2rayN.Desktop.Handler
                 {
                     if (Utils.IsWindows())
                     {
-                        //TODO
+                        ProxySettingWindows.UnsetProxy();
                     }
                     else if (Utils.IsLinux())
                     {
diff --git a/v2rayN/v2rayN.Desktop/v2rayN.Desktop.csproj b/v2rayN/v2rayN.Desktop/v2rayN.Desktop.csproj
index 3b5d8198..e0a8cb1e 100644
--- a/v2rayN/v2rayN.Desktop/v2rayN.Desktop.csproj
+++ b/v2rayN/v2rayN.Desktop/v2rayN.Desktop.csproj
@@ -33,6 +33,7 @@
 	</ItemGroup>
 
     <ItemGroup>
+      <ProjectReference Include="..\PacLib\PacLib.csproj" />
       <ProjectReference Include="..\ServiceLib\ServiceLib.csproj" />
     </ItemGroup>
  
diff --git a/v2rayN/v2rayN/Handler/SysProxyHandler.cs b/v2rayN/v2rayN/Handler/SysProxyHandler.cs
index 1efe3d76..1374bac6 100644
--- a/v2rayN/v2rayN/Handler/SysProxyHandler.cs
+++ b/v2rayN/v2rayN/Handler/SysProxyHandler.cs
@@ -1,12 +1,9 @@
 using PacLib;
-using v2rayN.Common;
 
 namespace v2rayN.Handler
 {
     public static class SysProxyHandler
     {
-        private const string _regPath = @"Software\Microsoft\Windows\CurrentVersion\Internet Settings";
-
         public static bool UpdateSysProxy(Config config, bool forceDisable)
         {
             var type = config.systemProxyItem.sysProxyType;
@@ -45,11 +42,11 @@ namespace v2rayN.Handler
                             .Replace("{http_port}", port.ToString())
                             .Replace("{socks_port}", portSocks.ToString());
                     }
-                    ProxySetting.SetProxy(strProxy, strExceptions, 2);
+                    ProxySettingWindows.SetProxy(strProxy, strExceptions, 2);
                 }
                 else if (type == ESysProxyType.ForcedClear)
                 {
-                    ProxySetting.UnsetProxy();
+                    ProxySettingWindows.UnsetProxy();
                 }
                 else if (type == ESysProxyType.Unchanged)
                 {
@@ -58,7 +55,7 @@ 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);
+                    ProxySettingWindows.SetProxy(strProxy, "", 4);
                 }
 
                 if (type != ESysProxyType.Pac)
@@ -72,10 +69,5 @@ namespace v2rayN.Handler
             }
             return true;
         }
-
-        public static void ResetIEProxy4WindowsShutDown()
-        {
-            ProxySetting.UnsetProxy();
-        }
     }
 }
\ No newline at end of file