HRESULT 0xC00D7165 (MF_E_NON_PE_PROCESS): meaning and diagnosis

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A process outside the Protected Environment attempted a PEAuth operation that requires a PE process.

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MF_E_PEAUTH_UNTRUSTED	MF_E_REBOOT_REQUIRED

MF_E_NON_PE_PROCESS

MF_E_NON_PE_PROCESS is a process-boundary error in the protected-media authentication path. A normal application process and a PMP process running inside a Protected Environment are not interchangeable for PEAuth operations.

Verify where the protected operation executes

Record the process ID and executable that makes the failing protection call.
Confirm whether the Media Session was created with MFCreatePMPMediaSession after MFRequireProtectedEnvironment indicated that PMP was required.
Check for custom media-source or protection code that accidentally performs a PE-only handshake from the application process.

Microsoft documents an unprotected PMP-process mode for process isolation, but explicitly states that it cannot be used for DRM playback. Therefore, “the object is in mfpmp.exe” is not sufficient by itself; the process must have the protected-environment trust required by the operation. Move the protected interaction to the correct PMP/PE path rather than weakening the content policy.

Microsoft: PMP protected versus unprotected process modes · Microsoft: MFCreatePMPMediaSession · Microsoft: deciding when PMP is required

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