What does HRESULT 0x8029010D (TPMAPI_E_MESSAGE_TOO_LARGE) mean?

 
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TPMAPI_E_TPM_COMMAND_ERROR TPMAPI_E_INVALID_ENCODING

TPMAPI_E_MESSAGE_TOO_LARGE

TPMAPI_E_MESSAGE_TOO_LARGE is a Windows TPM API result. It indicates that the requested payload cannot be represented within the size limits of the selected TPM encoding.

What to check for TPMAPI_E_MESSAGE_TOO_LARGE

  • Validate the maximum input size for the command and encoding used by the application.
  • Split or redesign application data rather than passing a larger blob through a fixed TPM field.
  • Confirm that length fields are calculated after all encoding transformations.

Microsoft documentation for TPMAPI error codes

Diagnostic interpretation

This result has the HRESULT value 0x8029010D. AllStat records the condition as “The message was too large for the encoding scheme.”.

Evidence to capture

  • Capture any IErrorInfo text, activity identifier, event-log entry, and subsystem trace that mentions this result or the tpmapi / message / too / large operation.
  • check the documented return contract of the specific API because the same HRESULT can require different recovery in different interfaces.

Retry and recovery

” has changed.


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