diff --git a/Netch/Forms/MainForm.cs b/Netch/Forms/MainForm.cs
index fcb916bc..2fa36c65 100644
--- a/Netch/Forms/MainForm.cs
+++ b/Netch/Forms/MainForm.cs
@@ -1,6 +1,7 @@
 using System;
 using System.Collections.Generic;
 using System.ComponentModel;
+using System.IO;
 using System.Linq;
 using System.Threading;
 using System.Threading.Tasks;
@@ -283,6 +284,10 @@ namespace Netch.Forms
             }
 
             Configuration.Save();
+
+            if (File.Exists("data\\last.json"))
+                File.Delete("data\\last.json");
+
             State = State.Terminating;
         }
 
diff --git a/Netch/Servers/VLESS/VLESSController.cs b/Netch/Servers/VLESS/VLESSController.cs
index 215b75a2..ad4cfdfc 100644
--- a/Netch/Servers/VLESS/VLESSController.cs
+++ b/Netch/Servers/VLESS/VLESSController.cs
@@ -1,6 +1,7 @@
 using System.IO;
 using Netch.Controllers;
 using Netch.Models;
+using Netch.Servers.VMess.Utils;
 
 namespace Netch.Servers.VLESS
 {
@@ -15,17 +16,8 @@ namespace Netch.Servers.VLESS
 
         public bool Start(Server s, Mode mode)
         {
-            var server = (VLESS) s;
-
-            File.WriteAllText("data\\last.json", VMess.Utils.V2rayConfigUtils.GenerateClientConfig(server, mode));
-
-            if (StartInstanceAuto("-config ..\\data\\last.json"))
-            {
-                if (File.Exists("data\\last.json")) File.Delete("data\\last.json");
-                return true;
-            }
-
-            return false;
+            File.WriteAllText("data\\last.json", V2rayConfigUtils.GenerateClientConfig(s, mode));
+            return StartInstanceAuto("-config ..\\data\\last.json");
         }
 
         public override void Stop()
diff --git a/Netch/Servers/VMess/VMessController.cs b/Netch/Servers/VMess/VMessController.cs
index c7b97fb0..8eef3909 100644
--- a/Netch/Servers/VMess/VMessController.cs
+++ b/Netch/Servers/VMess/VMessController.cs
@@ -1,6 +1,7 @@
 using System.IO;
 using Netch.Controllers;
 using Netch.Models;
+using Netch.Servers.VMess.Utils;
 
 namespace Netch.Servers.VMess
 {
@@ -20,15 +21,8 @@ namespace Netch.Servers.VMess
 
         public bool Start(Server s, Mode mode)
         {
-            File.WriteAllText("data\\last.json", Utils.V2rayConfigUtils.GenerateClientConfig(s, mode));
-
-            if (StartInstanceAuto("-config ..\\data\\last.json"))
-            {
-                if (File.Exists("data\\last.json")) File.Delete("data\\last.json");
-                return true;
-            }
-
-            return false;
+            File.WriteAllText("data\\last.json", V2rayConfigUtils.GenerateClientConfig(s, mode));
+            return StartInstanceAuto("-config ..\\data\\last.json");
         }
 
         public override void Stop()