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NS_E_DRM_DEVICE_NOT_OPEN
Read the code before the dialog
The producer of 0xC00D28AA has determined that the application attempted protected transfer before opening the validated registered device. Diagnosis of NS_E_DRM_DEVICE_NOT_OPEN therefore starts in WMDRM for Network Devices, the layer responsible for the transmitter/receiver protocol that registers a network playback device, approves it, validates proximity, opens a protected session and transcrypts licensed content for that receiver.
Confirm the producer by doing one thing first: inspect the registered-device state immediately before transcrypt/send.
Correlate the owner and the policy
The object graph behind this result includes device certificate and serial number, registration-database entry, approval flag, validation timestamp, network session, protocol message and transcrypt policy. A trace should retain the exact WMDRM-ND message type, device identifier, certificate chain, registration state, round-trip timing and the first protocol HRESULT.
A later generic error must not replace this evidence: the original condition remains that the application attempted protected transfer before opening the validated registered device.
Why the first HRESULT matters
The transition that returns this result begins with inspect the registered-device state immediately before transcrypt/send. If that observation matches, the next state cannot be reached until the implementation can call the supported open operation after registration, approval and validation. Keeping the result transition intact also shows whether a retry reused stale state or actually reevaluated the corrected input.
Minimum evidence set
| Field | Value |
|---|---|
| Owner | operation, API/callback, object or session identifier, and component/device version associated with this result |
| Direct check | inspect the registered-device state immediately before transcrypt/send |
Contrast with related results
| Result | Why it points elsewhere |
|---|---|
NS_E_DRM_INVALID_PROXIMITY_RESPONSE | the receiver returned a proximity response that fails parsing or cryptographic verification |
NS_E_DRM_INVALID_SESSION | the WMDRM-ND message refers to a nonexistent, expired or mismatched protocol session |
NS_E_DRM_DEVICE_ALREADY_REGISTERED | registration attempts to create a duplicate record for the same device identity |
The final dialog can be broader
The application attempted protected transfer before opening the validated registered device.
A controlled reproduction
- Preserve it and
0xC00D28AAbefore cleanup, fallback or another media item changes the context. - Apply the targeted fix: call the supported open operation after registration, approval and validation.
- Associate it with its current WMDRM for Network Devices object and the requested action.
- Run the direct check: inspect the registered-device state immediately before transcrypt/send.
- Compare the failure with a known-good case that changes only the property named by this condition: the application attempted protected transfer before opening the validated registered device.
Recovery at the right layer
Correct this layer directly and call the supported open operation after registration, approval and validation.
Technical references
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