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Error codeCall of DutyWindows PC: Black Ops 7, Warzone, Modern Warfare 4

Call of Duty: "TCG Event Log Failed"

TCG Event Log failure

The security check could not read the Trusted Computing Group event log because your copy of Windows is out of date. Your PC then counts as not meeting the security requirements.

Is Call of Duty down right now? Operational: 11 problem reports in the last hour. If it were down for everyone, this error could come from there; right now it looks normal.
Fix it

How to fix "TCG Event Log Failed"

  1. Restart your computer.

  2. Install the latest Windows update.

  3. Launch Call of Duty again.

From Call of Duty's help pages: support.activision.com, in our words. Checked on 5 November 2026. If the steps do not help, Call of Duty's own support is the next stop.

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