Riot Vanguard Error Code VAN 81: How to Fix It

Medium 30-45 minutes High Severity Verified June 2026
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Error Code
VAN 81
Brand
Riot Vanguard
Product Type
game
Severity
High
DIY Difficulty
Medium
Estimated Fix Time
30-45 minutes
Riot Vanguard error code VAN 81 occurs when the Vanguard kernel-level driver fails to load properly on your system. This prevents you from playing Valorant and other Riot games that require Vanguard anti-cheat protection.
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Tools You'll Need

How to Fix Error Code VAN 81

  1. Close Valorant and Riot Client

  2. Uninstall Riot Vanguard

    Make sure to restart your computer after uninstalling Vanguard - this is critical for proper cleanup

  3. Run Windows Update

  4. Enable Secure Boot and TPM

    BIOS settings vary by manufacturer - consult your motherboard manual if you can't locate these settings

  5. Disable Memory Integrity

  6. Reinstall Valorant

    Only download Valorant from the official Riot Games website to avoid malware

  7. Allow Vanguard Through Windows Defender

  8. Test the Fix

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When to Call a Professional

If you're uncomfortable accessing BIOS settings, experiencing persistent Windows security issues, or if the error continues after multiple reinstallation attempts, consider contacting Riot Games support or a computer technician for assistance.

Frequently Asked Questions

What causes Riot Vanguard error VAN 81?
VAN 81 occurs when Vanguard's kernel-level driver fails to load, often due to Windows security features, outdated drivers, corrupted Vanguard installation, or conflicts with other security software.
Can I play Valorant without fixing VAN 81?
No, you cannot play Valorant or other Riot games while VAN 81 persists. Vanguard must be running properly for these games to launch.
Is it safe to disable Memory Integrity for Vanguard?
Disabling Memory Integrity temporarily for Vanguard is generally safe for most users, but it does reduce one layer of Windows security. Re-enable it if you experience other security concerns.
Why does VAN 81 happen after Windows updates?
Windows updates can change security policies or driver configurations that conflict with Vanguard's kernel-level access, requiring a fresh Vanguard installation to work with the updated system.
How do I prevent VAN 81 from happening again?
Keep Windows updated, avoid installing conflicting security software, don't modify Vanguard files, and ensure your system meets Riot's hardware requirements including TPM 2.0 and Secure Boot support.

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