What does NTSTATUS 0xC029004C (STATUS_TPM_DELEGATE_FAMILY) mean?

 
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STATUS_TPM_DELEGATE_LOCK STATUS_TPM_DELEGATE_ADMIN

STATUS_TPM_DELEGATE_FAMILY

STATUS_TPM_DELEGATE_FAMILY is a Windows NTSTATUS value in the TPM facility. For STATUS_TPM_DELEGATE_FAMILY, it belongs to the TPM 1.2 error family and is normally surfaced through the Windows TPM stack, such as TPM Base Services, rather than by ordinary file, registry or network APIs.

Delegated TPM authority is scoped. This status means the caller is trying to manage a delegation family that is outside the family covered by the delegated credential or active delegation context.

The failure is a scope violation. A valid delegation for one family does not imply permission to administer another family even when the same owner created both.

Diagnostic focus

  • Log both the delegated family ID and the family ID targeted by the command.
  • Refresh delegation credentials after family changes instead of reusing a credential across families.
  • Compare with STATUS_TPM_INVALID_FAMILY, where the family ID itself is invalid.

References for STATUS_TPM_DELEGATE_FAMILY


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