HRESULT 0x8029011A (TPMAPI_E_EMPTY_TCG_LOG): meaning and diagnosis

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TPMAPI_E_EMPTY_TCG_LOG means the expected Trusted Computing Group event log is empty and cannot provide measured-boot evidence.

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TPMAPI_E_FIPS_RNG_CHECK_FAILED	TPMAPI_E_INVALID_TCG_LOG_ENTRY

TPMAPI_E_EMPTY_TCG_LOG

TPMAPI_E_EMPTY_TCG_LOG is a Windows TPM API result. It indicates that the expected Trusted Computing Group event log is empty and cannot provide measured-boot evidence.

What to check for TPMAPI_E_EMPTY_TCG_LOG

Verify that the platform firmware exposes a TCG event log and that Windows collected it during boot.
Check firmware settings and TPM visibility when the log is unexpectedly absent.
Do not treat an empty log as proof that measured boot succeeded or that no events occurred.

Microsoft documentation for TPMAPI error codes

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