diff --git a/Netch/Controllers/Interface/Controller.cs b/Netch/Controllers/Interface/Controller.cs
index ff1f885161..53302a7f36 100644
--- a/Netch/Controllers/Interface/Controller.cs
+++ b/Netch/Controllers/Interface/Controller.cs
@@ -1,5 +1,6 @@
 using System;
 using System.Collections.Generic;
+using System.ComponentModel;
 using System.Diagnostics;
 using System.IO;
 using System.Text;
@@ -67,10 +68,14 @@ protected void StopInstance()
                 Instance.Kill();
                 Instance.WaitForExit();
             }
-            catch (Exception e)
+            catch (Win32Exception e)
             {
                 Logging.Error($"停止 {MainFile} 错误：\n" + e);
             }
+            catch
+            {
+                // ignored
+            }
         }
 
 
diff --git a/Netch/Controllers/MainController.cs b/Netch/Controllers/MainController.cs
index d4c58a54b7..34a3007461 100644
--- a/Netch/Controllers/MainController.cs
+++ b/Netch/Controllers/MainController.cs
@@ -146,9 +146,14 @@ public bool Start(Server server, Mode mode)
         /// </summary>
         public void Stop()
         {
-            Task.Run(() => pEncryptedProxyController?.Stop());
-            Task.Run(() => UsingPorts.Clear());
-            pModeController?.Stop();
+            var tasks = new[]
+            {
+                Task.Factory.StartNew(() => pEncryptedProxyController?.Stop()),
+                Task.Factory.StartNew(() => UsingPorts.Clear()),
+                Task.Factory.StartNew(() => pModeController?.Stop()),
+                Task.Factory.StartNew(() => pNTTController.Stop())
+            };
+            Task.WaitAll(tasks);
         }
 
         public static void KillProcessByName(string name)
diff --git a/Netch/Controllers/Mode/HTTPController.cs b/Netch/Controllers/Mode/HTTPController.cs
index 5b09d99cdd..4b36e702fa 100644
--- a/Netch/Controllers/Mode/HTTPController.cs
+++ b/Netch/Controllers/Mode/HTTPController.cs
@@ -1,5 +1,6 @@
 using System;
 using System.Diagnostics;
+using System.Threading.Tasks;
 using System.Windows.Forms;
 using Microsoft.Win32;
 using Netch.Models;
@@ -30,7 +31,8 @@ public HTTPController()
         /// <returns>是否启动成功</returns>
         public override bool Start(Server server, Mode mode)
         {
-            RecordPrevious();
+            Task.Run(RecordPrevious);
+
             try
             {
                 if (server.Type == "Socks5")
@@ -79,21 +81,20 @@ private void RecordPrevious()
         /// </summary>
         public override void Stop()
         {
-            try
+            var tasks = new[]
             {
-                pPrivoxyController.Stop();
-
-                NativeMethods.SetGlobal(prevHTTP, prevBypass);
-                if (prevPAC != "")
-                    NativeMethods.SetURL(prevPAC);
-                if (!prevEnabled)
-                    NativeMethods.SetDIRECT();
-                prevEnabled = false;
-            }
-            catch (Exception e)
-            {
-                Logging.Error("停止HTTP控制器错误：\n" + e);
-            }
+                Task.Factory.StartNew(pPrivoxyController.Stop),
+                Task.Factory.StartNew(() =>
+                {
+                    NativeMethods.SetGlobal(prevHTTP, prevBypass);
+                    if (prevPAC != "")
+                        NativeMethods.SetURL(prevPAC);
+                    if (!prevEnabled)
+                        NativeMethods.SetDIRECT();
+                    prevEnabled = false;
+                })
+            };
+            Task.WaitAll(tasks);
         }
     }
 }
\ No newline at end of file
diff --git a/Netch/Controllers/Mode/TUNTAPController.cs b/Netch/Controllers/Mode/TUNTAPController.cs
index b1c3f49581..7c570463dc 100644
--- a/Netch/Controllers/Mode/TUNTAPController.cs
+++ b/Netch/Controllers/Mode/TUNTAPController.cs
@@ -7,6 +7,7 @@
 using System.Net.Sockets;
 using System.Text;
 using System.Threading;
+using System.Threading.Tasks;
 using System.Windows.Forms;
 using Netch.Models;
 using Netch.Properties;
@@ -366,10 +367,11 @@ public override bool Start(Server server, Mode mode)
             {
                 Thread.Sleep(10);
 
-                if (State == State.Started) return true;
-
-                if (State == State.Stopped)
+                switch (State)
                 {
+                    case State.Started:
+                        return true;
+                    case State.Stopped:
                     Stop();
                     return false;
                 }
@@ -383,9 +385,13 @@ public override bool Start(Server server, Mode mode)
         /// </summary>
         public override void Stop()
         {
-            StopInstance();
-            ClearBypass();
-            pDNSController.Stop();
+            var tasks = new[]
+            {
+                Task.Factory.StartNew(StopInstance),
+                Task.Factory.StartNew(ClearBypass),
+                Task.Factory.StartNew(pDNSController.Stop)
+            };
+            Task.WaitAll(tasks);
         }
 
         /// <summary>
diff --git a/Netch/Controllers/NTTController.cs b/Netch/Controllers/NTTController.cs
index c2568af254..6fd24209c8 100644
--- a/Netch/Controllers/NTTController.cs
+++ b/Netch/Controllers/NTTController.cs
@@ -43,9 +43,9 @@ public NTTController()
 
                 return (true, natType, localEnd, publicEnd);
             }
-            catch (Exception)
+            catch (Exception e)
             {
-                Logging.Error("NTT 进程出错");
+                Logging.Error("NTT 进程出错\n" + e);
                 Stop();
                 return (false, null, null, null);
             }
@@ -57,11 +57,9 @@ public NTTController()
                 _lastResult = e.Data;
         }
 
-        /// <summary>
-        ///     无用
-        /// </summary>
         public override void Stop()
         {
+            StopInstance();
         }
     }
 }
\ No newline at end of file
diff --git a/Netch/Forms/MainForm.Control.cs b/Netch/Forms/MainForm.Control.cs
index f17f8a0f08..71c5f78d72 100644
--- a/Netch/Forms/MainForm.Control.cs
+++ b/Netch/Forms/MainForm.Control.cs
@@ -19,9 +19,6 @@ partial class MainForm
 
         private void ControlFun()
         {
-            //防止模式选择框变成蓝色:D
-            ModeComboBox.Select(0, 0);
-
             if (State == State.Waiting || State == State.Stopped)
             {
                 // 服务器、模式 需选择
@@ -37,7 +34,10 @@ private void ControlFun()
                     return;
                 }
 
-                UpdateStatus(State.Starting);
+                State = State.Starting;
+
+                // 清除模式搜索框文本选择
+                ModeComboBox.Select(0, 0);
 
                 Task.Run(() =>
                 {
@@ -50,15 +50,14 @@ private void ControlFun()
                     {
                         Task.Run(() =>
                         {
-                            UpdateStatus(State.Started,
-                                i18N.Translate(StateExtension.GetStatusString(State.Started)) + LocalPortText(server.Type, mode.Type));
+                            State = State.Started;
+                            StatusTextAppend(LocalPortText(server.Type, mode.Type));
                             Bandwidth.NetTraffic(server, mode, _mainController);
                         });
                         // 如果勾选启动后最小化
                         if (Global.Settings.MinimizeWhenStarted)
                         {
                             WindowState = FormWindowState.Minimized;
-                            NotifyIcon.Visible = true;
 
                             if (_isFirstCloseWindow)
                             {
@@ -100,16 +99,20 @@ private void ControlFun()
                     }
                     else
                     {
-                        UpdateStatus(State.Stopped, i18N.Translate("Start failed"));
+                        State = State.Stopped;
+                        StatusText(i18N.Translate("Start failed"));
                     }
                 });
             }
             else
             {
-                // 停止
-                UpdateStatus(State.Stopping);
-                _mainController.Stop();
-                UpdateStatus(State.Stopped);
+                Task.Run(() =>
+                {
+                    // 停止
+                    State = State.Stopping;
+                    _mainController.Stop();
+                    State = State.Stopped;
+                });
                 Task.Run(TestServer);
             }
         }
diff --git a/Netch/Forms/MainForm.MenuStrip.cs b/Netch/Forms/MainForm.MenuStrip.cs
index f7a11e0280..bb404e661d 100644
--- a/Netch/Forms/MainForm.MenuStrip.cs
+++ b/Netch/Forms/MainForm.MenuStrip.cs
@@ -210,7 +210,7 @@ private void UpdateServersFromSubscribeLinksToolStripMenuItem_Click(object sende
                     StatusText(i18N.Translate("Subscription updated"));
 
                     MenuStrip.Enabled = ConfigurationGroupBox.Enabled = ControlButton.Enabled = SettingsButton.Enabled = true;
-                    UpdateStatus(bak_State);
+                    State = bak_State;
                     StatusLabel.Text = bak_StateText;
                 }).ContinueWith(task => { BeginInvoke(new Action(() => { UpdateServersFromSubscribeLinksToolStripMenuItem.Enabled = true; })); });
 
@@ -283,7 +283,7 @@ private void CleanDNSCacheToolStripMenuItem_Click(object sender, EventArgs e)
             }
             finally
             {
-                UpdateStatus(bak_State);
+                State = bak_State;
                 StatusLabel.Text = bak_StateText;
             }
         }
@@ -315,7 +315,7 @@ private void reinstallTapDriverToolStripMenuItem_Click(object sender, EventArgs
                 }
                 finally
                 {
-                    UpdateStatus(State.Waiting);
+                    State = State.Waiting;
                     Enabled = true;
                 }
             });
@@ -365,7 +365,7 @@ private void updateACLWithProxyToolStripMenuItem_Click(object sender, EventArgs
                 }
                 finally
                 {
-                    UpdateStatus(State.Waiting);
+                    State = State.Waiting;
                     _mainController.Stop();
                 }
             });
@@ -422,7 +422,7 @@ private void updateACLToolStripMenuItem_Click(object sender, EventArgs e)
                 }
                 finally
                 {
-                    UpdateStatus(bak_State);
+                    State = bak_State;
                     StatusLabel.Text = bak_StateText;
                 }
             });
diff --git a/Netch/Forms/MainForm.Status.cs b/Netch/Forms/MainForm.Status.cs
index 771ae447e6..ae365c9730 100644
--- a/Netch/Forms/MainForm.Status.cs
+++ b/Netch/Forms/MainForm.Status.cs
@@ -1,5 +1,6 @@
 using System;
 using System.Drawing;
+using System.Threading;
 using Netch.Models;
 using Netch.Utils;
 
@@ -11,10 +12,74 @@ public partial class Dummy
 
     partial class MainForm
     {
+        private State _state = State.Waiting;
+
         /// <summary>
         ///     当前状态
         /// </summary>
-        public State State { get; private set; } = State.Waiting;
+        public State State
+        {
+            get => _state;
+            private set
+            {
+                _state = value;
+                if (IsDisposed)
+                    return;
+                StatusText(i18N.Translate(StateExtension.GetStatusString(value)));
+                switch (value)
+                {
+                    case State.Waiting:
+                        ControlButton.Enabled = true;
+                        ControlButton.Text = i18N.Translate("Start");
+
+                        break;
+                    case State.Starting:
+                        ControlButton.Enabled = false;
+                        ControlButton.Text = "...";
+
+                        ConfigurationGroupBox.Enabled = false;
+
+                        MenuStripsEnabled(false);
+                        break;
+                    case State.Started:
+                        ControlButton.Enabled = true;
+                        ControlButton.Text = i18N.Translate("Stop");
+
+                        LastUploadBandwidth = 0;
+                        //LastDownloadBandwidth = 0;
+                        //UploadSpeedLabel.Text = "↑: 0 KB/s";
+                        DownloadSpeedLabel.Text = @"↑↓: 0 KB/s";
+                        UsedBandwidthLabel.Text = $@"{i18N.Translate("Used", ": ")}0 KB";
+                        UsedBandwidthLabel.Visible /*= UploadSpeedLabel.Visible*/ = DownloadSpeedLabel.Visible = true;
+                        break;
+                    case State.Stopping:
+                        ControlButton.Enabled = false;
+                        ControlButton.Text = "...";
+
+                        ProfileGroupBox.Enabled = false;
+
+                        UsedBandwidthLabel.Visible /*= UploadSpeedLabel.Visible*/ = DownloadSpeedLabel.Visible = false;
+                        NatTypeStatusText();
+                        break;
+                    case State.Stopped:
+                        ControlButton.Enabled = true;
+                        ControlButton.Text = i18N.Translate("Start");
+
+                        LastUploadBandwidth = 0;
+                        LastDownloadBandwidth = 0;
+
+                        ProfileGroupBox.Enabled = true;
+                        ConfigurationGroupBox.Enabled = true;
+
+                        MenuStripsEnabled(true);
+                        break;
+                    case State.Terminating:
+                        Dispose();
+                        Environment.Exit(Environment.ExitCode);
+                        return;
+                }
+            }
+        }
 
         public void NatTypeStatusText(string text = "", string country = "")
         {
@@ -89,85 +154,18 @@ public void StatusText(string text)
             StatusLabel.Text = i18N.Translate("Status", ": ") + text;
         }
 
-        /// <summary>
-        ///     更新 UI, 状态栏文本, 状态
-        /// </summary>
-        /// <param name="state"></param>
-        /// <param name="text"></param>
-        private void UpdateStatus(State state, string text = "")
+        public void StatusTextAppend(string text)
         {
-            State = state;
-            StatusText(text == "" ? i18N.Translate(StateExtension.GetStatusString(state)) : text);
-
-            void MenuStripsEnabled(bool enabled)
-            {
-                // 需要禁用的菜单项
-                UninstallServiceToolStripMenuItem.Enabled =
-                    updateACLWithProxyToolStripMenuItem.Enabled =
-                        UpdateServersFromSubscribeLinksToolStripMenuItem.Enabled =
-                            reinstallTapDriverToolStripMenuItem.Enabled = enabled;
-            }
-
-            // TODO 补充
-            switch (state)
-            {
-                case State.Waiting:
-                    ControlButton.Enabled = true;
-                    ControlButton.Text = i18N.Translate("Start");
-
-                    break;
-                case State.Starting:
-                    ControlButton.Enabled = false;
-                    ControlButton.Text = "...";
-
-                    ConfigurationGroupBox.Enabled = false;
-
-                    MenuStripsEnabled(false);
-                    break;
-                case State.Started:
-                    ControlButton.Enabled = true;
-                    ControlButton.Text = i18N.Translate("Stop");
-
-                    LastUploadBandwidth = 0;
-                    //LastDownloadBandwidth = 0;
-                    //UploadSpeedLabel.Text = "↑: 0 KB/s";
-                    DownloadSpeedLabel.Text = @"↑↓: 0 KB/s";
-                    UsedBandwidthLabel.Text = $@"{i18N.Translate("Used", ": ")}0 KB";
-                    UsedBandwidthLabel.Visible /*= UploadSpeedLabel.Visible*/ = DownloadSpeedLabel.Visible = true;
-                    break;
-                case State.Stopping:
-                    ControlButton.Enabled = false;
-                    ControlButton.Text = "...";
-
-                    ProfileGroupBox.Enabled = false;
-
-                    UsedBandwidthLabel.Visible /*= UploadSpeedLabel.Visible*/ = DownloadSpeedLabel.Visible = false;
-                    NatTypeStatusText();
-                    break;
-                case State.Stopped:
-                    ControlButton.Enabled = true;
-                    ControlButton.Text = i18N.Translate("Start");
-
-                    LastUploadBandwidth = 0;
-                    LastDownloadBandwidth = 0;
-
-                    ProfileGroupBox.Enabled = true;
-                    ConfigurationGroupBox.Enabled = true;
-
-                    MenuStripsEnabled(true);
-                    break;
-                case State.Terminating:
-
-                    break;
-            }
+            StatusLabel.Text += text;
         }
 
-        /// <summary>
-        ///     刷新 UI
-        /// </summary>
-        private void UpdateStatus()
+        public void MenuStripsEnabled(bool enabled)
         {
-            UpdateStatus(State);
+            // 需要禁用的菜单项
+            UninstallServiceToolStripMenuItem.Enabled =
+                updateACLWithProxyToolStripMenuItem.Enabled =
+                    UpdateServersFromSubscribeLinksToolStripMenuItem.Enabled =
+                        reinstallTapDriverToolStripMenuItem.Enabled = enabled;
         }
     }
 }
\ No newline at end of file
diff --git a/Netch/Forms/MainForm.cs b/Netch/Forms/MainForm.cs
index 4c68a86877..3bc63abb5a 100644
--- a/Netch/Forms/MainForm.cs
+++ b/Netch/Forms/MainForm.cs
@@ -118,7 +118,6 @@ private void MainForm_FormClosing(object sender, FormClosingEventArgs e)
                 {
                     // 使关闭时窗口向右下角缩小的效果
                     WindowState = FormWindowState.Minimized;
-                    NotifyIcon.Visible = true;
 
                     if (_isFirstCloseWindow)
                     {
@@ -211,39 +210,31 @@ private void InitText()
             // 加载翻译
 
             UsedBandwidthLabel.Text = $@"{i18N.Translate("Used", ": ")}0 KB";
-            UpdateStatus();
+            State = State;
 
             VersionLabel.Text = UpdateChecker.Version;
         }
 
         private void Exit(bool forceExit = false)
         {
-            if (IsDisposed) return;
-
-            // 已启动
-            if (State != State.Waiting && State != State.Stopped)
+            if (State != State.Waiting && State != State.Stopped && !Global.Settings.StopWhenExited && !forceExit)
             {
-                if (Global.Settings.StopWhenExited || forceExit)
-                {
-                    UpdateStatus(State.Stopping);
-                    ControlFun();
-                }
-                else
-                {
-                    // 未开启自动停止
-                    MessageBoxX.Show(i18N.Translate("Please press Stop button first"));
-
-                    Visible = true;
-                    ShowInTaskbar = true; // 显示在系统任务栏 
-                    WindowState = FormWindowState.Normal; // 还原窗体 
-                    NotifyIcon.Visible = true; // 托盘图标隐藏 
+                MessageBoxX.Show(i18N.Translate("Please press Stop button first"));
 
-                    return;
-                }
+                Visible = true;
+                ShowInTaskbar = true; // 显示在系统任务栏 
+                WindowState = FormWindowState.Normal; // 还原窗体 
+                NotifyIcon.Visible = true; // 托盘图标隐藏 
+                return;
             }
 
-            NotifyIcon.Visible = false;
             Hide();
+            NotifyIcon.Visible = false;
+            if (State != State.Waiting && State != State.Stopped)
+            {
+                // 已启动
+                ControlFun();
+            }
 
             Task.Run(() =>
             {
@@ -255,9 +246,7 @@ private void Exit(bool forceExit = false)
                 }
 
                 SaveConfigs();
-                UpdateStatus(State.Terminating);
-                Dispose();
-                Environment.Exit(Environment.ExitCode);
+                State = State.Terminating;
             });
         }
 
@@ -439,7 +428,6 @@ private void ShowMainFormToolStripButton_Click(object sender, EventArgs e)
                 Visible = true;
                 ShowInTaskbar = true; // 显示在系统任务栏 
                 WindowState = FormWindowState.Normal; // 还原窗体 
-                NotifyIcon.Visible = true; // 托盘图标隐藏 
             }
 
             Activate();
diff --git a/Netch/Forms/SettingForm.cs b/Netch/Forms/SettingForm.cs
index 1525e7aeab..e5c20d79e0 100644
--- a/Netch/Forms/SettingForm.cs
+++ b/Netch/Forms/SettingForm.cs
@@ -376,6 +376,11 @@ private bool CheckPortText(string portName, ref TextBox portTextBox, ref int ori
                     throw new FormatException();
                 }
 
+                if (port == originPort)
+                {
+                    return true;
+                }
+
                 if (PortHelper.PortInUse(port, portType))
                 {
                     MessageBoxX.Show(i18N.TranslateFormat("The {0} port is in use.", portName));
diff --git a/Netch/Resources/zh-CN b/Netch/Resources/zh-CN
index b31bde0c0a..b7e8381596 100644
--- a/Netch/Resources/zh-CN
+++ b/Netch/Resources/zh-CN
@@ -75,7 +75,7 @@
 
     "Options": "选项",
     "Uninstall NF Service": "卸载 NF 服务",
-    "Uninstalling NF Service": "正在 NF 卸载服务中",
+    "Uninstalling NF Service": "正在卸载 NF 服务中",
     "Service has been uninstalled": "服务已卸载",
     "Reload Modes": "重载模式",
     "Modes have been reload": "模式已重载",