diff --git a/core/updater.py b/core/updater.py
index 874b440..b3a5ab2 100644
--- a/core/updater.py
+++ b/core/updater.py
@@ -269,6 +269,9 @@ class UpdateChecker:
             vbs_path = os.path.join(tmp_dir, "sm_update.vbs")
             pid = os.getpid()
 
+            # Clean up old PyInstaller _MEI dirs to avoid DLL conflicts
+            mei_dir = getattr(sys, '_MEIPASS', '')
+
             bat_content = f"""@echo off
 :wait
 tasklist /fi "PID eq {pid}" 2>NUL | find "{pid}" >NUL
@@ -276,11 +279,17 @@ if %ERRORLEVEL% == 0 (
     timeout /t 1 /nobreak >NUL
     goto wait
 )
+timeout /t 2 /nobreak >NUL
+if exist "{mei_dir}" rmdir /s /q "{mei_dir}" >NUL 2>NUL
 copy /Y "{new_exe}" "{current_exe}" >NUL
 if %ERRORLEVEL% NEQ 0 (
-    exit /b 1
+    timeout /t 3 /nobreak >NUL
+    copy /Y "{new_exe}" "{current_exe}" >NUL
+    if %ERRORLEVEL% NEQ 0 exit /b 1
 )
+timeout /t 2 /nobreak >NUL
 start "" "{current_exe}"
+del "{new_exe}" >NUL 2>NUL
 del "{bat_path}"
 del "%~f0"
 """
diff --git a/releases/ServerManager-v1.8.86-win-x64.exe b/releases/ServerManager-v1.8.86-win-x64.exe
new file mode 100644
index 0000000..04f4d6d
Binary files /dev/null and b/releases/ServerManager-v1.8.86-win-x64.exe differ
diff --git a/version.py b/version.py
index fefe4d5..0a44f1e 100755
--- a/version.py
+++ b/version.py
@@ -1,6 +1,6 @@
 """Version info for ServerManager."""
 
-__version__ = "1.8.85"
+__version__ = "1.8.86"
 __app_name__ = "ServerManager"
 __author__ = "aibot777"
 __description__ = "Desktop GUI for managing remote servers"