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Hi Ikeh Jason,
I understand how confusing it is to not pass Call of Duty's attestation check, especially after already updating the BIOS. From the official documents, the game's system verifies multiple security components, not just the BIOS version: Trusted Platform Module (TPM) 2.0 and Secure Boot for Call of Duty
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- Press Win + R > type
tpm.msc> press Enter and confirm:- TPM is present + Version is 2.0
- TPM status shows The TPM is ready for use.
- Press Win + R > type
msinfo32> press Enter and verify:- BIOS Mode = UEFI
- Secure Boot State = On.
- Make sure everything is up to date
- Go to Settings > Windows Update > Check for updates
- Then go to Advanced options > Optional updates
- Install all available updates and reboot.
- Press Win + S > search and open Event Viewer:
- Check and confirm there's no TPM-related errors
- If there's TPM Event or Error, let me know the details.
If everything above is working correctly, then the problem may not be Windows-related. There are recent reports of Warzone/Black Ops attestation failures occurring even on fully compliant systems. In that case, the issue would need to be investigated by the game developer.
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