Running into a Vanguard error in League of Legends is never fun. It blocks you from launching the game and interrupts your grind. These errors usually come with a “VAN” code, and they point directly to issues with Riot’s Vanguard anti-cheat system. If you’ve ever seen the words “Vanguard Error League of Legends,” this guide will help you fix it step by step.

Riot Games uses Vanguard to catch cheaters. The software works deep inside your system to detect exploits and shady programs. But that also means it can run into a few issues when your system doesn’t match Vanguard’s tight requirements.

Let’s walk through every common Vanguard error in League of Legends and how to fix each one.

What Is Vanguard and the Errors

Vanguard is a kernel-level anti-cheat tool. It’s strict, powerful, and sometimes very sensitive. When things go wrong, League won’t launch. Most of the time, the issue is caused by your system being out of sync with what Vanguard needs.

There are three major reasons why a Vanguard error shows up in League of Legends:

• Connection problems
• Hardware or system settings issues
• Interference from third-party software

Now, let’s break down the most common VAN codes you might see and what to do.

VAN Error Codes and Fixes

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Common Vanguard Errors in League of Legends

VAN 0 / VAN 1 / VAN 6 / VAN 68 / VAN 84 / VAN 185
These are all connection errors. They appear if you’ve left League running for too long or your network settings are off.

Fix:

• Restart League and the Riot Client
• Reboot your PC
• You need to have a stable internet connection

VAN 57 / VAN -81 / VAN -102 / VAN -104 / VAN 128 / VAN 1067
These show that Vanguard isn’t running or something is blocking it.

Fix:

• Restart your PC
• Make sure Riot Vanguard is installed
• Open Services (services.msc), find VGC, set to Automatic, and start it
• Reinstall Riot Client and Vanguard if needed

VAN 138
This error appears if you’re running League or Vanguard from a virtual machine.

Fix:
Install both on a real, non-virtual copy of Windows.

VAN 152
This one means your hardware was banned due to suspicious activity.

Fix:
This is a permanent hardware ban. You’ll need to contact support directly.

VAN -100 / VAN -101
These are general errors, often related to corrupted installs.

Fix:

• Restart the Riot Client
• Reboot your PC
• Reinstall League and Vanguard
• Lastly, contact the support for further help

VAN9001 / VAN9002 / VAN9005 / VAN9006
These involve Windows security features. Vanguard needs TPM 2.0, Secure Boot, and Exploit Protection active.

Fix:

• Enable Secure Boot and TPM in BIOS
• Turn on Exploit Protection via Windows Security
• Update your Windows version to at least 1803

Extra Errors

Some players experience an “Authorization Error.” This happens when the client fails to authenticate your session.

Fix:

• Restart the client completely
• Run as Administrator
• Flush your DNS
• Disable third-party programs temporarily

For “Unexpected Authorization Errors,” delete the lockfile in the Riot Client config folder and restart your PC.

Read Also: Can You Play League of Legends On Mac

How To Escape From Errors

To avoid repeating the Vanguard Error League of Legends problem, keep these tips in mind:

• Restart the Riot Client every few days
• Update Windows regularly
• Avoid virtual machines
• Don’t run background apps that interfere with Riot’s services
• Turn on Secure Boot and TPM in BIOS settings
• Scan for malware often

Final Word

Solving the Vanguard Error League of Legends issue is about checking small but critical details. Most problems fix themselves after a restart or reinstall. But if things still don’t work, check for system settings or antivirus conflicts.

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