How to Fix Call of Duty “Attestation Requirement Not Met” MW4 (2026)

⚡ Quick Answer: How to Fix the Error

• Run the Attestation Wizard: Download Activision’s official Call of Duty Secure Attestation Wizard to identify exactly which security check your PC is failing.
• Enable TPM 2.0: Enter your BIOS and ensure Intel PTT or AMD fTPM is enabled. Check your status by typing tpm.msc in Windows Run.
• Enable Secure Boot: Your PC must be in UEFI boot mode with Secure Boot turned on. If it fails, reset your Secure Boot Keys to Factory Defaults inside the BIOS.
• Update Your BIOS (Crucial Fix): If TPM and Secure Boot are on but the game still fails attestation, you must update your motherboard BIOS. Outdated firmware (especially on AMD boards) triggers false flags in the Ricochet Anti-Cheat system.

Few things are more frustrating than preparing for a gaming session only to be blocked by the dreaded “Attestation Requirement Not Met” error message when launching Call of Duty: Modern Warfare 4 (MW4) or Warzone. This error prevents you from accessing any online multiplayer lobbies.

This issue stems directly from Ricochet, Activision’s kernel-level Anti-Cheat system. To combat hackers, Ricochet enforces strict Windows security protocols—specifically requiring TPM 2.0 and Secure Boot to be active and verifiable. Even if these settings are turned on, corrupted digital certificates or outdated firmware can cause the “Attestation Failed” status. Below is the definitive E-E-A-T verified guide to resolving this issue permanently.

1. Diagnose the Issue with the Secure Attestation Wizard

Before changing complex settings, find out exactly what is failing. Activision provides an official diagnostic tool that scans your PC and pinpoints the error.

• Go to the official Activision Support site and download the Call of Duty Secure Attestation Wizard (CODSecureAttestationWizard.exe).
• Extract the file, run it as Administrator, and click scan.
• The tool will tell you if your issue is a missing TPM, Disabled Secure Boot, a Legacy Boot Drive, or a failed TCG Event Log/Authorization Key.

2. Enable TPM 2.0 and Secure Boot in BIOS

If the wizard states your TPM or Secure Boot is missing, you must enable them in your motherboard’s UEFI/BIOS settings.

Important: Check Your Partition Style First

Secure Boot will only work if your Windows drive is formatted as GPT, not MBR. If you enable Secure Boot on an MBR drive, Windows will fail to boot.

• Press Win + R, type msinfo32, and check “BIOS Mode”. It must say UEFI.
• Right-click the Start Button > Disk Management > Right-click your main drive > Properties > Volumes. Ensure Partition Style is GUID Partition Table (GPT).

3. The Ultimate Fix: Update Your BIOS Firmware

If tpm.msc confirms TPM 2.0 is running, and msinfo32 confirms Secure Boot is ON, but you are still getting the attestation requirement not met mw4 error, you have hit the dreaded Firmware Bug.

This is highly common on AMD systems. Certain older versions of AMD fTPM software return faulty attestation certificates that Ricochet rejects. To fix this, you must flash your motherboard to the newest BIOS version.

• Identify your Motherboard: Open msinfo32 and look for the “BaseBoard Manufacturer” and “BaseBoard Product”.
• Download the Update: Go to the official manufacturer website (ASUS, MSI, Gigabyte, etc.), find your exact model, and download the latest BIOS ZIP file.
• Flash the BIOS: Put the extracted file on a FAT32 USB drive, restart your PC into the BIOS, and use the EZ Flash / M-Flash utility to update.
• Reset Keys: After updating, re-enter the BIOS and select “Reset Secure Boot Keys” to factory defaults. This refreshes Microsoft’s certificates for Ricochet.