What does HRESULT 0xC00D7159 (MF_E_POLICY_UNSUPPORTED) mean?

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The selected output cannot enforce one or more protection requirements in the policy.

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MF_E_WMDRMOTA_INVALID_POLICY	MF_E_OPL_NOT_SUPPORTED

MF_E_POLICY_UNSUPPORTED

MF_E_POLICY_UNSUPPORTED is the documented SetPolicy result when an output trust authority cannot support the requirements of an output policy. The policy exists and negotiation reached the trusted output; the problem is enforcement capability.

Capture the exact required and supported schemas

Record output attributes such as digital/analog, audio/video, compressed/uncompressed, and the output subtype used for schema generation.
Enumerate the protection schema GUIDs supported by the OTA.
Preserve the required IMFOutputSchema objects generated by the policy for diagnostic logging.

Do not collapse this into MF_E_OPL_NOT_SUPPORTED. OPL failure is associated with the input protection authority/license requirement; this HRESULT is the OTA's inability to enforce the policy presented to a particular output. Changing the content decoder does not add output protection. Compare the failing connector/output with one that exposes a compatible trusted-output capability.

Microsoft: SetPolicy return values · Microsoft: required protection schemas · Microsoft: trusted outputs and OTAs

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