Fix VALORANT Van 9003 Secure Boot Error

By Zennith Gamer • Published 2026-05-22 •
VALORANTVanguardBIOSWindows 11

Fix the VALORANT Van 9003 error instantly by entering your motherboard BIOS settings and enabling AMD/Intel Secure Boot and UEFI mode.

Fix VALORANT Van 9003 Secure Boot Error Troubleshooting

Riot Vanguard requires Windows 11 systems to enforce UEFI and UEFI Secure Boot modes to prevent cheat virtualization.

# Step 1: Diagnose Root Configurations

1. Restart your computer and tap Del, F2, or F12 key repeatedly to enter the motherboard BIOS configuration. 2. Locate the Boot or Security Menu, change Boot Options from CSC/Legacy to UEFI Only.

# Step 2: Clear Local Cache Locks

1. Find 'Secure Boot' configuration and toggle the state from Disabled to Enabled. 2. Save modifications, reboot into Windows, and type msinfo32 in search to verify Secure Boot is Active.

Read our related diagnostic guidelines for deep analysis. You can also check your credentials strength using our client-side Password Generator.