HRESULT 0xC026251F: meaning and diagnosis

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An OPM-specific request was sent to a COPP-semantics output.

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ERROR_GRAPHICS_OPM_DRIVER_INTERNAL_ERROR	ERROR_GRAPHICS_OPM_SIGNALING_NOT_SUPPORTED

ERROR_GRAPHICS_OPM_VIDEO_OUTPUT_DOES_NOT_HAVE_OPM_SEMANTICS

A COPP-compatibility object cannot accept OPM-only operations

The mode on IOPMVideoOutput is part of the object’s contract. This error is the mirror image of the COPP-semantics mismatch: the caller created the output in COPP compatibility mode and later attempted an OPM-specific information request or configuration command.

The difference is visible in HDCP handling. OPM semantics include the modern OPM commands and output-side revocation support, whereas COPP emulation preserves older compatibility behavior and exposes a different set of requests. The correct repair is to select the intended mode before the object is created, not to reinterpret command data at the point of failure.

Practical review

Trace the value used when the video output was obtained, then trace the GUID passed to GetInformation or Configure.
Keep OPM and COPP request builders separate in code so that their command identifiers and parameter structures cannot be mixed.
Recreate the output with OPM semantics when the protected-content workflow requires OPM-only capabilities.

References

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