HRESULT 0x8029011B (TPMAPI_E_INVALID_TCG_LOG

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The Windows TPM API could not parse a TCG event-log entry because the entry does not satisfy the expected event-log structure.

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TPMAPI_E_EMPTY_TCG_LOG	TPMAPI_E_TCG_SEPARATOR_ABSENT

TPMAPI_E_INVALID_TCG_LOG_ENTRY

TPMAPI_E_INVALID_TCG_LOG_ENTRY is a Windows TPM API result. It indicates that an entry in the Trusted Computing Group event log cannot be parsed or does not meet expected structural rules.

What to check for TPMAPI_E_INVALID_TCG_LOG_ENTRY

Check the event-log source, length fields, and record boundaries before processing subsequent entries.
Compare firmware and Windows versions if parsing fails after a platform update.
Preserve the original log for analysis without modifying or truncating it.

Microsoft documentation for TPMAPI error codes

Diagnostic discriminator: Parse the failing TCG event-log entry and validate its declared lengths, event type and payload boundaries. This result is malformed log-entry data, not an absent log entry.

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