Fix VALORANT Secure Boot error by enabling Secure Boot in BIOS

GG Brief Editorial Desk · AI-assisted, source attributed

VALORANT can fail to start when its Vanguard anti-cheat requires UEFI Secure Boot but the PC is set to legacy boot. Open Windows System Information to confirm whether the system firmware is UEFI, then enable Secure Boot in the motherboard BIOS/UEFI. This is a boot-configuration issue that prevents Vanguard from running and blocks the game from launching.

• Riot Vanguard can block VALORANT from launching if Secure Boot or UEFI is not enabled on the PC.
• Open Windows System Information to confirm whether the system firmware uses UEFI or legacy/BIOS mode.
• Enable Secure Boot in the motherboard BIOS/UEFI settings to satisfy Vanguard’s requirement and allow VALORANT to start.
• The error is caused by a PC boot-configuration mismatch rather than the game itself, so changing firmware settings resolves the launch failure.