Call of Duty error codes

All 8 codes

• TPM 2.0: Not Enabled: TPM 2.0 not enabled

  Means

  The Secure Attestation Wizard or the game found that TPM 2.0 is not turned on. Black Ops 7, Warzone and Modern Warfare 4 on PC require TPM 2.0.

  First step

  Press Windows key + R, run tpm.msc and check whether it says the TPM is ready for use. All steps

• Secure Boot: Not Enabled: Secure Boot not enabled

  Means

  Your PC does not have Secure Boot on, which Black Ops 7, Warzone and Modern Warfare 4 require. Secure Boot needs UEFI boot mode and a GPT-partitioned drive.

  First step

  Press Windows key + R, run msinfo32 and check that BIOS Mode is UEFI and Secure Boot State is On. All steps

• Failed Attestation Status: Failed Attestation Status

  Means

  Your PC did not pass Call of Duty's security check (TPM 2.0 and Secure Boot). In Black Ops 7 and Warzone you lose access to some modes such as Ranked Play and may be matched with other non-compliant players; Modern Warfare 4 blocks all online modes.

  First step

  Run the Call of Duty Secure Attestation Wizard to see which setting fails. All steps

• CODBrokerInstaller.exe authorization declined: CODBrokerInstaller.exe authorization declined

  Means

  The Windows User Account Control prompt used to register your TPM 2.0 was declined or never shown, so the game cannot validate your PC. Without approving it you cannot play.

  First step

  When the UAC prompt for CODBrokerInstaller.exe or enrollaik.exe appears, enter admin details if asked and select Yes. All steps

• TCG Event Log Failed: TCG Event Log failure

  Means

  The security check could not read the Trusted Computing Group event log because your copy of Windows is out of date.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.

  First step

  Restart your computer. All steps

• 0x error: 0x error on the Xbox app for PC

  Means

  Errors starting with 0x are a known issue for players running Call of Duty through Xbox on PC. Activision says repairing the app usually clears it.

  First step

  Go to Start > Settings > Apps > Installed apps and find Call of Duty. All steps

• CE-34878-0: Game crash on PlayStation

  Means

  This PlayStation error shows up when the game crashes and sends you back to the home screen. It can also appear as a generic application or system software error.

  First step

  Restart the game and try again. All steps

• NOT AVAILABLE: NOT AVAILABLE message on PC Game Pass

  Means

  PC Game Pass players may see "NOT AVAILABLE. Purchase Black Ops 7 to have access to everything." Activision links it to the Microsoft Store device limit.

  First step

  Open Microsoft Store device management and check you have not gone over the device limit. All steps