diff --git a/v2rayN/AmazTool/UpgradeApp.cs b/v2rayN/AmazTool/UpgradeApp.cs
index 31de6a6d..852f18da 100644
--- a/v2rayN/AmazTool/UpgradeApp.cs
+++ b/v2rayN/AmazTool/UpgradeApp.cs
@@ -22,12 +22,12 @@ namespace AmazTool
             Console.WriteLine("Try to end the process(尝试结束进程).");
             try
             {
-                var path = GetPath(V2rayN);
-                Console.WriteLine(path);
                 var existing = Process.GetProcessesByName(V2rayN);
-                var pp = existing.FirstOrDefault(p => p.MainModule?.FileName != null && p.MainModule?.FileName.Contains(path) == true);
-                pp?.Kill();
-                pp?.WaitForExit(1000);
+                foreach (var pp in existing)
+                {
+                    pp?.Kill();
+                    pp?.WaitForExit(1000);
+                }
             }
             catch (Exception ex)
             {
diff --git a/v2rayN/ServiceLib/Handler/CoreHandler.cs b/v2rayN/ServiceLib/Handler/CoreHandler.cs
index 8f230a18..acb91c20 100644
--- a/v2rayN/ServiceLib/Handler/CoreHandler.cs
+++ b/v2rayN/ServiceLib/Handler/CoreHandler.cs
@@ -108,13 +108,11 @@ namespace ServiceLib.Handler
         {
             try
             {
-                bool hasProc = false;
                 if (_process != null)
                 {
                     await KillProcess(_process);
                     _process.Dispose();
                     _process = null;
-                    hasProc = true;
                 }
 
                 if (_processPre != null)
@@ -122,26 +120,6 @@ namespace ServiceLib.Handler
                     await KillProcess(_processPre);
                     _processPre.Dispose();
                     _processPre = null;
-                    hasProc = true;
-                }
-
-                if (!hasProc)
-                {
-                    var coreInfo = CoreInfoHandler.Instance.GetCoreInfo();
-                    foreach (var it in coreInfo)
-                    {
-                        if (it.CoreType == ECoreType.v2rayN)
-                        {
-                            continue;
-                        }
-                        foreach (var name in it.CoreExes)
-                        {
-                            var path = Utils.GetBinPath(Utils.GetExeName(name), it.CoreType.ToString());
-                            var existing = Process.GetProcessesByName(name);
-                            var pp = existing.FirstOrDefault(p => p.MainModule?.FileName != null && p.MainModule?.FileName.Contains(path) == true);
-                            await KillProcess(pp);
-                        }
-                    }
                 }
             }
             catch (Exception ex)
diff --git a/v2rayN/ServiceLib/ViewModels/MainWindowViewModel.cs b/v2rayN/ServiceLib/ViewModels/MainWindowViewModel.cs
index 5fc22623..dc0b6bfe 100644
--- a/v2rayN/ServiceLib/ViewModels/MainWindowViewModel.cs
+++ b/v2rayN/ServiceLib/ViewModels/MainWindowViewModel.cs
@@ -289,7 +289,7 @@ namespace ServiceLib.ViewModels
                 await ProfileExHandler.Instance.SaveTo();
                 await StatisticsHandler.Instance.SaveTo();
                 StatisticsHandler.Instance.Close();
-                CoreHandler.Instance.CoreStop();
+                await CoreHandler.Instance.CoreStop();
 
                 Logging.SaveLog("MyAppExit End");
             }