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NS_E_DRM_INVALID_CRL
The first reliable fact
The condition encoded by 0xC00D28B1 is not generic playback failure; it is that the certificate revocation list used by WMDRM-ND is malformed, corrupt or unverifiable. Diagnosis of NS_E_DRM_INVALID_CRL 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.
The strongest confirmation is to record CRL issuer, signature, validity interval and download/update source. The standard AllStat text is already shown above; this custom section concentrates on the object state and the evidence needed to separate NS_E_DRM_INVALID_CRL from neighboring Windows Media errors.
The transaction to reconstruct
NS_E_DRM_INVALID_CRL is meaningful only while the following state remains associated with one operation: device certificate and serial number, registration-database entry, approval flag, validation timestamp, network session, protocol message and transcrypt policy. Preserve the exact WMDRM-ND message type, device identifier, certificate chain, registration state, round-trip timing and the first protocol HRESULT for NS_E_DRM_INVALID_CRL.
The producing layer has not made a claim about every media operation; it has only established that the certificate revocation list used by WMDRM-ND is malformed, corrupt or unverifiable.
What the result does not prove
For NS_E_DRM_INVALID_CRL, the established fact is that the certificate revocation list used by WMDRM-ND is malformed, corrupt or unverifiable. For NS_E_DRM_INVALID_CRL, that fact does not independently establish damaged media bytes, a missing decoder, a generally broken network, or invalid rights for every other action.
If the Player, encoder, setup program or device layer later emits a broader error, retain NS_E_DRM_INVALID_CRL as the first specific result. The object and operation attached to NS_E_DRM_INVALID_CRL are usually more diagnostic than a later cleanup or user-interface summary.
A controlled before/after test
The before/after comparison for NS_E_DRM_INVALID_CRL has one controlled variable. Before correction, the certificate revocation list used by WMDRM-ND is malformed, corrupt or unverifiable; after correction, the same workflow can obtain a current valid CRL through the DRM security-update path. For NS_E_DRM_INVALID_CRL, 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 for NS_E_DRM_INVALID_CRL |
|---|---|
| Lower result | the earliest store, network, cryptographic, driver or provider status preceding the final NS_E_DRM_INVALID_CRL wrapper |
| Owner | operation, API/callback, object or session identifier, and component/device version associated with NS_E_DRM_INVALID_CRL |
| Direct check | record CRL issuer, signature, validity interval and download/update source |
| Policy input | requested action plus the exact license, certificate, profile, output or registration property evaluated by NS_E_DRM_INVALID_CRL |
| Temporal state | trusted/system time, validity interval, request sequence and retry number when they influence NS_E_DRM_INVALID_CRL |
Reproduce at the owning layer
- Preserve
NS_E_DRM_INVALID_CRLand0xC00D28B1before cleanup, fallback or another media item changes the context. - Associate
NS_E_DRM_INVALID_CRLwith its current WMDRM for Network Devices object and the requested action. - Run the direct check for
NS_E_DRM_INVALID_CRL: record CRL issuer, signature, validity interval and download/update source. - Compare the failure with a known-good case that changes only the property named by this condition: the certificate revocation list used by WMDRM-ND is malformed, corrupt or unverifiable.
- Apply the narrow correction for
NS_E_DRM_INVALID_CRL: obtain a current valid CRL through the DRM security-update path. - Repeat the same action with the same content/device identity and verify that
NS_E_DRM_INVALID_CRLis not replaced by another policy or trust failure.
Do not merge these failures
| Result | Why it points elsewhere |
|---|---|
NS_E_DRM_UNABLE_TO_OPEN_PORT | the application cannot bind the port used for WMDRM-ND proximity messages |
NS_E_DRM_BAD_REQUEST | a WMDRM-ND request has invalid framing, fields or message semantics |
NS_E_DRM_ATTRIBUTE_TOO_LONG | a WMDRM-ND attribute name or value exceeds the protocol/API limit |
Restore the required state
Recovery should change the failed precondition by choosing to obtain a current valid CRL through the DRM security-update path. For NS_E_DRM_INVALID_CRL, success means that the same requested action is accepted after that precise state change, not merely that another file or device happens to work.
- While investigating NS_E_DRM_INVALID_CRL, keep this restriction: Do not delete the complete device-registration database before preserving the failing device record and certificate chain; that removes the distinction between registration, approval, validation and session failures.
- Do not alter trusted time, revocation enforcement, certificate validation or output policy merely to suppress
NS_E_DRM_INVALID_CRL; that bypasses the decision instead of correcting its input. - Retain one failing artifact and one corrected artifact so the resolution of
NS_E_DRM_INVALID_CRLcan be regression-tested.
Keep a diagnostic fixture
For the final NS_E_DRM_INVALID_CRL test, keep the content KID or file hash, requested action, user/account, device identity and output route unchanged wherever they apply. The NS_E_DRM_INVALID_CRL case is resolved only when the operation completes without this HRESULT and without a substitute failure from a neighboring license, trust, session or policy check.
Technical references for NS_E_DRM_INVALID_CRL
- Windows Media DRM 10 for Network Devices — lists the security and state transitions used to interpret NS_E_DRM_INVALID_CRL.
- Device registration — defines the platform objects used when diagnosing NS_E_DRM_INVALID_CRL.
- Using the WMDRM-ND protocol — documents the protocol or API boundary behind NS_E_DRM_INVALID_CRL.
- MS-DRMND protocol specification — provides the normative workflow relevant to NS_E_DRM_INVALID_CRL.
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