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NS_E_DRM_INVALID_SESSION
The first reliable fact
The condition encoded by 0xC00D28A9 is not generic playback failure; it is that the WMDRM-ND message refers to a nonexistent, expired or mismatched protocol session. Diagnosis of NS_E_DRM_INVALID_SESSION 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.
Before changing the machine, correlate session identifier, peer identity and message sequence.
The transaction to reconstruct
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.
This evidence matters because the rejected condition is specifically that the WMDRM-ND message refers to a nonexistent, expired or mismatched protocol session.
A controlled before/after test
A useful failure model links cause and recovery: the WMDRM-ND message refers to a nonexistent, expired or mismatched protocol session. Verify that model when you correlate session identifier, peer identity and message sequence, then make the smallest change needed to discard stale messages and create a new session for the same registered device. Use a known-good counterpart only as a control; do not replace the failing artifact before its identifiers and hashes are recorded.
Incident data
| Field | Value |
|---|---|
| Owner | operation, API/callback, object or session identifier, and component/device version associated with this result |
| Direct check | correlate session identifier, peer identity and message sequence |
| Policy input | requested action plus the exact license, certificate, profile, output or registration property evaluated by this result |
Do not merge these failures
| Result | Why it points elsewhere |
|---|---|
NS_E_DRM_MUST_REVALIDATE | the receiver registration exists but its proximity validation is stale or no longer acceptable |
NS_E_DRM_INVALID_PROXIMITY_RESPONSE | the receiver returned a proximity response that fails parsing or cryptographic verification |
NS_E_DRM_DEVICE_NOT_OPEN | the application attempted protected transfer before opening the validated registered device |
What the result does not prove
The WMDRM-ND message refers to a nonexistent, expired or mismatched protocol session.
Reproduce at the owning layer
- Preserve it and
0xC00D28A9before cleanup, fallback or another media item changes the context. - Apply the targeted fix: discard stale messages and create a new session for the same registered device.
- Associate it with its current WMDRM for Network Devices object and the requested action.
- Run the direct check: correlate session identifier, peer identity and message sequence.
- Compare the failure with a known-good case that changes only the property named by this condition: the WMDRM-ND message refers to a nonexistent, expired or mismatched protocol session.
Restore the required state
Repair the owner of the check: discard stale messages and create a new session for the same registered device.
Technical references
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