Fix Valorant Error VAN9003 - Enable Secure Boot and TPM 2.0

If you are trying to launch Valorant and getting hit with the VAN9003 error, your PC is failing the security check required by Riot's Vanguard anti-cheat. This is almost always because your system is running in Legacy BIOS mode with Secure Boot or TPM 2.0 disabled, which Windows 11 strictly requires.

Why this happens

Riot Vanguard requires a modern, secure boot environment to prevent cheating at the kernel level. If your motherboard is set to Legacy or CSM mode, the anti-cheat cannot verify the integrity of your system, causing the game to block your access.

What you will need

You need to be able to enter your motherboard's BIOS setup menu. Depending on your PC, this usually requires tapping a specific key like Delete, F2, F10, or F12 repeatedly during the initial power-on sequence.

Steps

1. 01
   Press Windows Key + R, type msinfo32, and check the 'BIOS Mode' and 'Secure Boot State' lines to confirm they are set to Legacy or Off.
2. 02
   Press Windows Key + R, type tpm.msc, and verify if your TPM status shows as 'not ready for use' or is missing.
3. 03
   Restart your computer and repeatedly tap your motherboard's BIOS entry key (usually Delete, F2, F10, or F12) until the setup screen appears.
4. 04
   Locate your 'Boot' or 'Security' settings and set 'Boot Mode' to UEFI, ensuring 'CSM' or 'Legacy' modes are disabled.
5. 05
   Find the 'Secure Boot' option and set it to 'Enabled'. If the option is greyed out, save your current settings, reboot, and return to the BIOS menu.
6. 06
   Locate the 'TPM' settings—often labeled as 'AMD fTPM' or 'Intel PTT'—and ensure they are set to 'Enabled'.
7. 07
   Press your 'Save and Exit' key (typically F10) to commit the changes and restart your computer into Windows.

Still not working?

If you have enabled these settings and still see the error, check your motherboard manufacturer's website for a BIOS update, as older firmware versions may have buggy TPM implementations. In rare cases, if your hardware does not support TPM 2.0 at all, you may need a physical TPM module or a hardware upgrade to play Valorant on Windows 11.

Frequently asked questions

Will changing these BIOS settings erase my files?

No, changing BIOS settings to enable UEFI, Secure Boot, and TPM will not delete your personal files or Windows data.

Why does Valorant require TPM 2.0?

Riot uses these security features to ensure your system is in a trusted, unmodified state, which makes it much harder for cheat developers to bypass the anti-cheat system.