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MF_E_INCOMPATIBLE_SAMPLE_PROTECTION
MF_E_INCOMPATIBLE_SAMPLE_PROTECTION is an incompatibility inside the protected sample path. The components involved support sample protection, but their supported algorithms do not form a compatible end-to-end choice for the stream.
Map the protected sample path component by component
- Record the media source/ITA, decrypter, protected transforms, and sink selected in the resolved topology.
- Identify the first component boundary where protection negotiation fails.
- Compare the failing hardware/software path with a known working topology while keeping the same protected asset.
This error is not the same as HDCP or another physical-link protection failure. Output link protection is applied after media has traversed the protected pipeline; sample protection concerns how protected samples are handled between components. Replacing only the display cable cannot create a compatible sample algorithm. Focus on the selected protected components, hardware DRM path, and whether a custom MFT or sink participates in protected processing.
Microsoft: protected components in the PMP · Microsoft: ITA decrypter role · Microsoft: trusted outputs
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