What does HRESULT 0xC00D2750 (NS_E_DRM_DRIVER_DIGIOUT_FAILURE) mean?

NS_E_DRM_DRIVER_DIGIOUT_FAILURE

What this HRESULT isolates

The symbolic result NS_E_DRM_DRIVER_DIGIOUT_FAILURE narrows 0xC00D2750 to trusted playback path and output restrictions. In practical terms, certain driver functionality is required to play this media file. Contact windows update to see whether updated drivers are available for your hardware; the producing layer is the protected playback path that authenticates application and driver components and enforces license requirements for audio, digital outputs, burning and other destinations.

Record the exact API, object state, input identity and first lower-level result associated with this failure.

Which component owns the failure

Do not flatten this result into a generic DRM error. Output restrictions must be queried and enforced before the operation; a driver can render ordinary media yet fail the protected path. The second relevant rule is that legacy Secure Audio Path and newer protected-media mechanisms use trusted components, so an unvalidated or revoked component is not repaired by changing the content file.

Diagnostic inputs that separate the causes

• Protected identity: audio/video driver identity, signature and version.
• Operation state: application certificate and revocation state.
• Persistence or transport: restriction-query result before playback or burn begins.
• Security context: protected-path renewal or component-validation event.
• Correlation point: requested output and protection level.

How to prove the condition

1. Start from 0xC00D2750 and map it to the first WMDRM object that returned it.
2. Separate content/header evidence, license evidence, machine/device evidence and service/network evidence around “protected digital-output failure”.
3. Before retrying this result, check whether another “protected digital-output failure” operation was active or whether the previous result may have committed partially.
4. Record the exact API, object state, input identity and first lower-level result associated with the failing operation.
5. Apply the smallest supported fix: correct the producing DRM state or input and retry with a fresh operation object; avoid resetting unrelated protected state.

What a supported fix should change

The supported response to this result is narrow: correct the producing DRM state or input and retry with a fresh operation object. After correcting it, reopen or recreate the object that owned “protected digital-output failure” so the verification does not reuse state from the failed operation.

Representative case: The application reaches this path and receives this exact HRESULT before the higher-level media action can complete.

Do not merge these HRESULTs

How to know the fix is real

A valid regression has two fixtures: one that deliberately produces “certain driver functionality is required to play this media file. Contact windows update to see whether updated drivers are available for your hardware” and one that applies the targeted correction. Compare callback order, selected license/KID, final rights decision and persistence state; disappearance of the “protected digital-output failure” dialog alone is not proof.

Code-specific operational note

The user-facing message “Certain driver functionality is required to play this media file. Contact Windows Update to see whether updated drivers are available.” describes the visible condition but does not identify the producing API, object instance, or protected identity by itself.

Technical references

• Output protection levels.
• Secure Audio Path model.
• Protected Media Path — platform documentation used to distinguish this result from adjacent results.
• DRM export and output protection