How To Fix Van9003 Valorant Error
How To Fix Van9003 Valorant Error (Complete Step-by-Step Guide)
The VAN9003 Valorant error is one of the most frustrating issues players face, especially on Windows 11. It usually appears because Vanguard (Valorant’s anti-cheat) detects that your system is not compliant with required security features like Secure Boot, TPM 2.0, or UEFI mode.
If you’ve been stuck with this error for hours (or even days), you’re not alone. In this comprehensive guide based on a proven tutorial, I’ll walk you through exactly how to fix the VAN9003 error quickly and get back into the game.
Why Does the VAN9003 Error Happen?
Valorant’s Vanguard anti-cheat is strict about system security. It requires:
- UEFI (not Legacy/CSM mode)
- Secure Boot enabled
- TPM 2.0 (Trusted Platform Module)
When these are off or misconfigured — especially after Windows updates or clean installs — you’ll see the VAN9003 error. The good news? Fixing it is straightforward if you follow the steps carefully.
Step 1: Set Compatibility Mode for Riot Client and Valorant
- Right-click on the Valorant shortcut (or search for it in the Windows search bar).
- Select Open file location.
- Right-click the Riot Client executable → Properties.
- Go to the Compatibility tab.
- Check these two boxes:
- Run this program in compatibility mode for: Windows 8
- Run this program as an administrator
- Click Apply → OK.
Now repeat the exact same steps for the Valorant game executable itself (usually found inside the Riot Games folder → Valorant → live).
This helps resolve permission and compatibility conflicts that often trigger the error.
Step 2: Check Your Current System Status
- Press the Windows key and search for System Information (or type msinfo32).
- Open it and look under System Summary.
- Check two key lines:
- BIOS Mode: Should be UEFI (not Legacy).
- Secure Boot State: Should be On.
If Secure Boot is Off, that’s likely the main culprit behind your VAN9003 error.
Step 3: Enter BIOS and Make the Changes (Most Important Step)
This is where most players get stuck, but it’s easier than it sounds.
- Restart your PC.
- As soon as it starts booting, repeatedly press the BIOS key for your motherboard or laptop. Common keys: Delete, F2, F10, F12 (check your device manual or the link in the video description for brand-specific keys).
- Once inside BIOS:
- Navigate to the Boot tab.
- Disable CSM (Compatibility Support Module) if it’s enabled.
- Set OS Type to Windows UEFI mode.
- Set Secure Boot to Standard or Enabled.
- If you can’t find the Boot section easily, use the search function inside BIOS and type “Secure Boot”.
- Save changes and exit (usually F10 + Enter).
Your PC will restart. After rebooting, check System Information again — Secure Boot should now show as On and BIOS Mode as UEFI.
Step 4: Additional Quick Fixes (If the Error Persists)
- Update Windows to the latest version.
- Reinstall Vanguard (uninstall via Settings → Apps, then reinstall through the Riot Client).
- Make sure TPM 2.0 is enabled (search for tpm.msc in Windows search — it should show version 2.0).
- For some users, enabling Network Stack in BIOS also helps.
Why This Fix Works
By enabling UEFI + Secure Boot, your system meets Vanguard’s compliance requirements. Thousands of players have successfully fixed the VAN9003 error using these exact steps.
Pro Tips:
- Take screenshots or notes while in BIOS — settings vary slightly by manufacturer (ASUS, MSI, Gigabyte, Dell, HP, Lenovo, etc.).
- Do not change other random settings in BIOS unless you know what they do.
- After changes, launch Valorant as administrator.
Frequently Asked Questions FAQs
