Valorant Error van-55 appears when Vanguard detects a BIOS/firmware-level incompatibility. This can include an outdated BIOS version on systems that have known security vulnerabilities, or BIOS settings that conflict with Vanguard's integrity checks.
Usually client-sideLast verified: 2026-08-19
Update your BIOS/UEFI firmware
Visit your motherboard or laptop manufacturer's support page and download the latest BIOS update. Follow their official instructions carefully — BIOS updates are powerful and should not be interrupted.
Check BIOS security settings
Ensure that Secure Boot is enabled, TPM 2.0 is active, and that CSM (Compatibility Support Module) / Legacy mode is disabled. These settings are all in your BIOS/UEFI under Boot or Security.
How to fix step by step
- 1Update your BIOS/UEFI firmware from your motherboard or laptop manufacturer's official website
- 2In BIOS settings: enable Secure Boot, enable TPM 2.0, disable CSM/Legacy boot mode
- 3After making BIOS changes, perform a full system restart before launching Valorant
How VAN-55 differs from related codes
- Error VAN-61: Valorant's Vanguard anti-cheat requires Secure Boot to be enabled in your BIOS/UEFI. Your system has Secure Boot disabled, preventing Vanguard from loading. (usually client-side)
- Error VAN-81: Valorant lost connection to Riot services during login or queue. (server or client)
- Error VAN-9003: Valorant could not connect to Riot services or complete Vanguard checks. (server or client)