How to Fix League of Legends Vanguard Error VAN 57

Published On - September 22, 2025

Emily Harris

You’re all set to jump into a heated League of Legends match. The team is ready. The energy is high. But then—boom! You’re hit with the dreaded Vanguard Error VAN 57. Don’t worry. You’re not alone. This is one of those errors that shows up almost out of nowhere and makes your heart drop a little.

The good news? It’s totally fixable. You don’t have to be a computer wizard. Just follow some simple steps, and you’ll be back on the Rift in no time!

What Is Vanguard Error VAN 57, Anyway?

This error is related to Riot Vanguard, the anti-cheat system used by Riot Games. Even though League of Legends and Teamfight Tactics don’t really need Vanguard, it’s still triggered if Valorant is installed.

Basically, VAN 57 means Vanguard isn’t working right. It could be disabled, corrupted, or not starting up properly at boot.

Let’s fix that so you can queue up for ranked without staring at an error screen!

Step-by-Step Guide to Fixing VAN 57

1. Restart Your PC

Yes, it’s basic. Yes, it works.

  • Save your work.
  • Click Start > Power > Restart.
  • Try launching League again.

This simple step often brings Vanguard back to life!

2. Manually Enable Vanguard

If Vanguard didn’t start with Windows, you may need to give it a little push.

  1. Press Ctrl + Shift + Esc to open Task Manager.
  2. Click the Services tab.
  3. Look for vgc.
  4. If it’s not running, right-click it and hit Start.

Next time you try launching League or Valorant, Vanguard should be awake and ready.

3. Reinstall Riot Vanguard

If the above didn’t work, maybe your Vanguard files are corrupted.

Here’s how to nuke and rebuild Vanguard:

  1. Hit Windows Key + R to open the Run box.
  2. Type appwiz.cpl and hit Enter.
  3. Find and uninstall Riot Vanguard.
  4. Restart your PC.
  5. Launch Valorant—this will re-install Vanguard.

Even if you’re focusing on League, using Valorant helps trigger a fresh version of Vanguard to install.

4. Check Windows Services

Sometimes, Vanguard fails because it’s blocked from starting at bootup.

  1. Press Windows Key + R, then type services.msc and press Enter.
  2. Scroll down to find vgc.
  3. Right-click it and select Properties.
  4. Set the Startup Type to Automatic.
  5. Click Apply then OK.

Restart your PC again—and boom, you might see the error disappear like magic!

5. Run as Administrator

Running your Riot Games or League client as an admin gives it permission to talk to system services like Vanguard.

  • Right-click your League of Legends or Riot Client shortcut.
  • Select Run as Administrator.

It may ask for permission—click Yes. Try launching your game now.

6. Disable Conflicting Software

Some antivirus or security software blocks Vanguard. Look out for apps like:

  • Avast
  • BitDefender
  • Malwarebytes
  • Windows Defender (occasionally)

Try disabling these temporarily and then run the game. If you can play, add Riot Vanguard to the software’s exception list.

Still Stuck?

If none of the above worked, here’s a couple more tricks:

1. Use System Restore

If everything was fine last week, you can roll your system back to that point.

  1. Search for Create a restore point in the Start menu.
  2. Click System Restore. Follow the steps.
  3. Choose a restore point just before the error began.

It takes a few minutes, but it’s like hitting the historical undo button.

2. Submit a Ticket to Riot

If nothing else works, go to Riot Support.

Create a ticket and describe your issue in detail. Include what you’ve already tried. Sometimes they’ll send you a special tool to scan for system collisions.

Helpful Tips to Avoid VAN 57 in the Future

  • Always shut down your PC properly—don’t just force close it.
  • Enable auto-updates so Vanguard stays current.
  • Relog in to Riot Client if you notice something strange.
  • Don’t mess with your system files unless you know what you’re doing.

And definitely don’t delete Vanguard manually unless you’re reinstalling it properly.

Final Thoughts

The VAN 57 error may look scary, but it’s not a game-ender. Follow these easy steps, and you should be back controlling Baron buff in no time.

Sometimes all it takes is a restart. Other times it needs a full reset of Vanguard. Just go step by step, don’t panic, and have patience.

Now go secure those LP points and show everyone why you deserve Challenger.

GLHF!