Quick answer
To fix VALORANT VAN 9003 error, restart first, then repair the game files and the anti-cheat service before changing BIOS or Windows security settings.
Quick fixes
- Restart the PC and open the game once without overlays or recording tools.
- Verify or repair VALORANT files from the launcher.
- Run the launcher as administrator for one test.
- Repair or reinstall the anti-cheat component from the game's install folder or launcher.
- Check official support before changing Secure Boot, TPM, virtualization, or BIOS options.
Common symptoms
- VALORANT closes before the main menu and shows an anti-cheat message.
- The launcher opens, but the game process exits after a security check.
- The error started after a Windows update, BIOS change, driver update, or anti-cheat update.
Why this happens
- The anti-cheat service is not running correctly.
- A Windows security setting does not match the game's requirements.
- Overlay, macro, RGB, capture, or driver software is conflicting with the anti-cheat.
- The game update and anti-cheat update did not finish cleanly.
Platform-specific steps
PC
- Restart Windows, then open VALORANT without overlays for one test.
- Verify or repair VALORANT from its launcher.
- Update GPU, audio, network, or controller drivers based on the symptom.
Riot Client
- Restart the Riot Client completely.
- Repair VALORANT if the client offers a repair option.
- Restart Windows if Vanguard or the Riot service was updated.
FAQ
What is the fastest VALORANT VAN 9003 error fix?
To fix VALORANT VAN 9003 error, restart first, then repair the game files and the anti-cheat service before changing BIOS or Windows security settings.
Should I reinstall VALORANT to fix VAN 9003 error?
Reinstall VALORANT only after restarting, checking service status, repairing game files, and testing without overlays or VPN tools. Most VAN 9003 error cases do not need a full reinstall.
Why does VALORANT show VAN 9003 error?
Common causes include the anti-cheat service is not running correctly, but the exact reason depends on your platform, launcher, network, and recent updates.