What does HRESULT 0x8029021A (TBSIMP_E_TPM_INCOMPATIBLE) mean?

Status / error code:

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Constant name:

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Operating System:

Description:

TBS is not compatible with the version of TPM found on the system.

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TBSIMP_E_PPI_NOT_SUPPORTED	TBSIMP_E_NO_EVENT_LOG

TBSIMP_E_TPM_INCOMPATIBLE

The TBS implementation and TPM do not match

TBSIMP_E_TPM_INCOMPATIBLE (0x8029021A) means the implementation cannot operate with the detected TPM generation/capabilities in the requested mode. This is broader than one unsupported ordinal.

Evidence to capture

Record detected TPM version/capabilities, firmware, TBS implementation/OS version, context parameters, and whether platform firmware changed TPM mode.

Focused correction

Use the Windows/TBS path intended for the installed TPM generation and supported platform configuration. Avoid converting command bytes until the stack/version mismatch is resolved.

Technical references

Microsoft: About TPM Base Services.
Microsoft: TBS return codes.
Microsoft: Tbsi_Context_Create.
Microsoft: Tbsip_Submit_Command.

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