What does HRESULT 0x80290212 (TBSIMP_E_UNKNOWN_ORDINAL) mean?

TBSIMP_E_UNKNOWN_ORDINAL

The requested TPM ordinal is unknown to this TBS path

TBSIMP_E_UNKNOWN_ORDINAL (0x80290212) means the implementation/scheduler cannot map the command ordinal to supported TPM handling. This can be a version/capability mismatch before the TPM itself evaluates command fields.

Evidence to capture

Capture TPM version, command ordinal, TBS implementation version, context type, and raw command header. Confirm the caller did not send a TPM 2.0 command through a TPM 1.2-oriented path or vice versa.

Focused correction

Use an ordinal supported by the active TPM/TBS combination or choose the correct TPM stack/version. Preserve the raw command header for validation.

Technical references

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