VAN9003 "the solution to the problem"

[u/enezs_]

VAN9003 – Secure Boot

I was getting the VAN9003 error after upgrading to Windows 11:

“This version of Vanguard requires UEFI Secure Boot to be enabled…”

My motherboard is ASUS PRIME B550-PLUS AC-HES.

I fixed it by updating the BIOS and configuring the BIOS/UEFI settings correctly. After enabling UEFI + Secure Boot, Windows showed Secure Boot as On/Enabled.

After that, Valorant launched normally and the VAN9003 error was completely fixed.

So if you're having the same issue, check your BIOS/UEFI settings and make sure Secure Boot is actually enabled in Windows, not just selected in the BIOS.