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STATUS_RTPM_UNSUPPORTED_CMD
Unsupported remote TPM command
STATUS_RTPM_UNSUPPORTED_CMD means the command may be a real TPM command but is not supported through the remote TPM processing path in use. This is a capability boundary between local TPM command support and remote/offloaded command handling.
The command should be checked against both TPM version/capabilities and the remote-processing feature set. A command accepted locally through TBS or a platform provider can still be rejected by a remote TPM target.
Diagnostic focus
- Record the TPM command ordinal/command code and target TPM version.
- Confirm the remote TPM implementation supports that command in its remote-processing path.
- Provide a local fallback only if the security model permits executing the command on the local TPM.
References
- Microsoft: TPM Base Services
- Microsoft: CNG key storage providers
- TCG: TPM 2.0 Library specification
- Microsoft: NTSTATUS values
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