If you are seeing a Vanguard error message stating "Secure Boot is not enabled" or "System requires UEFI," follow the steps below.
To fix this, you must enter your motherboard's firmware settings: Secure Boot Guide - VALORANT Support
| Symptom | Likely Fix | |---------|-------------| | BIOS shows Secure Boot on, but Windows says off | Disable CSM, ensure UEFI boot mode | | “Secure Boot can be enabled but is off” | Load factory default keys in BIOS | | Valorant error persists after enabling | Reinstall Vanguard + restart twice | | Windows installed in Legacy mode | Convert to GPT using mbr2gpt tool | valorant uefi secure boot
Your BIOS is currently in CSM/Legacy mode. Secure Boot is a UEFI-only feature. Switch Boot Mode to UEFI first. Cause 2: Your motherboard is very old. If your PC is 10+ years old, it might not support Secure Boot.
Your hard drive was formatted for Legacy BIOS (MBR partition style). UEFI requires a GPT partition style. Solution: You must convert your drive from MBR to GPT. If you are seeing a Vanguard error message
Drop your motherboard model or error code in the comments – the community usually has a fix.
If you dual-boot Linux or use older hardware, you may need to weigh the trade-off. For everyone else, following the steps above should get you back in the game within 10 minutes. Switch Boot Mode to UEFI first
Vanguard requires Secure Boot to prevent "rootkit" cheats that load before the operating system.
Before diving into your BIOS settings, confirm what actually needs changing: UEFI Secure Boot — ECI documentation
You may need to set OS Type to Windows UEFI mode or load Factory Default Keys for Secure Boot to activate.