HRESULT 0x80280909 (TPM_20_E_CANCELED): meaning and diagnosis

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The TPM command was canceled before it could return its normal result.

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TPM_20_E_YIELDED	TPM_20_E_TESTING

TPM_20_E_CANCELED

Cancellation is an explicit command outcome

TPM_20_E_CANCELED represents TPM_RC_CANCELED. A caller, resource manager, platform timeout path, or TPM interface can request cancellation of an outstanding command. The response means the TPM observed that cancellation; it does not describe why the higher layer requested it.

Windows TBS provides Tbsip_Cancel_Commands, which cancels outstanding commands for a context. Closing the context or terminating a client can also change resource lifetime. Retrying automatically may be wrong when the original application intentionally canceled an operation.

Trace the cancellation source

Check whether the application invoked the TBS cancel API during timeout or shutdown handling.
Correlate cancellation with service stop, sleep, device reset, and process termination events.
Verify that output buffers are discarded because a canceled command has no ordinary successful result.
Retry only after determining that the cancellation was transient and the command is safe to repeat.

References

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