Failed Attestation Status Call of Duty: How to Fix PC Security Validation

Call of Duty failed attestation status message — updated on June 9, 2026 with a practical diagnostic flow, quick table, and safe fixes.

What does this error mean?

In Call of Duty, Failed Attestation Status appears when the PC security check does not complete or the system does not meet the required trusted boot settings. Confirm TPM 2.0, Secure Boot and UEFI mode, approve the official attestation prompt, update Windows and firmware, then relaunch the game.

Quick diagnostic table

Check	What to do	Priority
Security requirement not met	TPM 2.0 or Secure Boot may be disabled or unavailable.	First
Firmware mismatch	Old BIOS firmware can create false failures on some machines.	High
User prompt denied	The attestation wizard cannot validate if the UAC request is denied.	High
Unsupported Windows setup	Legacy boot mode or very old Windows builds can fail modern security checks.	Medium
Third-party tampering tools	Kernel, overlay, input or spoofing utilities can interfere with validation.	Medium

Fast fix checklist

Close Call of Duty and Battle.net or Steam completely.
Check Windows Update and install all security and driver updates.
Use tpm.msc to verify TPM 2.0 is present and ready.
Use System Information to confirm Secure Boot State is On.
Enable Secure Boot and TPM/fTPM/PTT in UEFI settings if they are off.
Remove unsupported boot loaders, spoofers or tools that alter secure startup.
Run the game once and select Yes on the official attestation UAC prompt.
If a firmware warning remains, check your motherboard/laptop support page for BIOS updates.
Repair the Call of Duty installation through the launcher.
Contact support with screenshots if the validation tool says compatible but the game still flags failed status.

Expert tip

The safest fix sequence is software status check, then BIOS settings, then manufacturer firmware. Jumping straight to BIOS updates increases risk and may not be necessary.

Detailed fix guide

If the quick checklist did not solve failed attestation status call of duty, work through the fixes slowly and test after each major change. Avoid changing several settings at once because you will not know which one actually fixed the issue.

Start with the simplest checks: restart the affected app or game, test a stable connection, and confirm whether other users are reporting the same symptom. If the issue is service-side, aggressive local changes will not help and may create extra problems.

Next, focus on authentication and permission. Many failed-status messages are not caused by broken hardware; they happen because the app cannot verify your session, cannot access a required background component, or cannot pass a security check.

Finally, document what you changed. If you need support, screenshots of the exact message, device model, app version, operating system version and steps already tried will help support teams avoid repeating generic advice.

Common mistakes to avoid

Mistake	Why it hurts	Better action
Reinstalling immediately	It wastes time and may not touch the real cause.	Repair, update or reset cache first.
Using unofficial tools	They can add security risk or violate service rules.	Use official settings and vendor support.
Changing many settings together	You cannot identify the real fix.	Change one setting, test, then continue.

Frequently asked questions

Is Failed Attestation Status a shadowban?

It is a PC security validation status, not the same thing as an account enforcement message.

Why did Call of Duty suddenly start showing it?

Security checks can become stricter after an anti-cheat or seasonal update.

Can antivirus cause it?

Antivirus is less common than BIOS or Secure Boot problems, but aggressive kernel or overlay tools can interfere.

Related internal fixes

Use these internal links to move readers to the most relevant troubleshooting page.

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Final recommendation

For failed attestation status call of duty, use the safest fix path first: verify the service or account, reset the local app state, then change advanced settings only when the basic checks fail.

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