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Error Code: VAN9003
Secure Boot is disabled
VALORANT blocks launch with 'VAN9003: This build of Vanguard requires Secure Boot to be enabled'.
Why it happens
Secure Boot prevents unsigned, malicious bootloaders (like DMA cheats) from loading before Windows starts.
How to fix it
Enter your BIOS settings, disable CSM (Compatibility Support Module), and set Secure Boot to 'Windows UEFI Mode' or 'Standard'.
Recommended Steps:
- 1
Click Find My PC below if you aren't sure what motherboard you have.
- 2
Open the Interactive Wizard to get step-by-step instructions for your specific BIOS.
- 3
Apply the settings, save and exit your BIOS, and launch the game.