Many League of Legends players are unable to play LOL due to the Vanguard error VAN 57. A player’s Reddit post reported this: “I keep having VAN 57 error or Vanguard session is starting error in LOL.” The VAN 57 error message says, “An unexpected error with Vanguard has occurred and the client will now close.” This is how you can fix the League of Legends Vanguard error VAN 57 on a Windows PC.
Try Restarting the Riot Client
First, try a basic restart of the Riot Client, as this can help clear conflicts. You can restart Riot Client by ending processes related to it via Task Manager, like this:
- Open Task Manager, which you can access by right-clicking any part of the taskbar and selecting its shortcut.
- Look for Riot Client and Vanguard-related processes on the Processes tab.
- Right-click all Riot Client and Vanguard processes to select End task.
The End task option
- Also, look for a Riot Client icon in the system tray area. Right-click the Riot Client system tray icon and select End task.
Make Sure the VGC Service is Enabled
The League of Legends Vanguard Error VAN 57 can occur when the VGC service is not enabled while running. VGC is a background service for the Riot Vanguard anti-cheat software. Try enabling and running the VGC service like this:
- First, press the Windows logo + R keyboard key combination to launch Run.
- Enter services.msc and click OK.
- Double-click VGC to access settings for that service.
- Select Automatic for Startup type if that option is set to an alternative.
The Startup type drop-down menu
- Click on Start within the VGC service window.
- Select Apply > OK to save the service settings.
- Next, bring up Run again, input msconfig, and select OK.
- Click on Services on the tab bar.
- Select the Hide all Microsoft services option.
The System Configuration tool
- Next, click the checkbox for VGC to select that service.
- Press Apply in the System Configuration window.
- Click OK to exit the window.
Reinstall Vanguard
Reinstalling Riot Vanguard is a widely confirmed way to fix the League of Legends Vanguard error VAN 57 error on Windows PCs. That is also the official Riot Games support fix for the VAN 57 error. This is how you can reinstall Riot Vanguard:
- Bring up Run, input appwiz.cpl, and select OK to access the Programs and Features applet.
- Right-click Riot Vanguard and select Uninstall.
- Click Yes when prompted for confirmation.
The Programs and Features applet
- Start the Riot Client software.
- Select League of Legends in Riot Client.
- Click the Update option to reinstall Vanguard.
Edit the Registry
Some players have also fixed the League of Legends Vanguard error VAN 57 by editing the registry. Applying that potential fix disables the DevOverrideEnable DWORD for the Image File Execution Options registry key. You can disable that registry DWORD like this:
- Activate Run, input regedit, and select OK.
- Next, open this registry key: HKEY_LOCAL_MACHINE > SOFTWARE > Microsoft > WindowsNT > CurrentVersion > Image File Execution Options.
- Then, double-click the DevOverrideEnable DWORD.
- Change the Value data setting to 0 if set differently.
The DevOverrideEnable DWORD
- Click OK to confirm.
- Close the Registry Editor and restart your Windows PC.
The potential resolutions above have fixed the League of Legends Vanguard error VAN 57 error for many players. Reinstalling Vanguard usually does the trick, but some players might need to try applying the other potential fixes. If the VAN 57 error persists, try submitting a ticket to the LOL help service from this Riot support page.
