What does HRESULT 0xC00D28B1 (NS_E_DRM_INVALID_CRL) mean?

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 transaction to reconstruct

This result 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 this operation.

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

The certificate revocation list used by WMDRM-ND is malformed, corrupt or unverifiable.

A controlled before/after test

The before/after comparison 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. Use a known-good counterpart only as a control; do not replace the failing artifact before its identifiers and hashes are recorded.

Incident data

Reproduce at the owning layer

1. Preserve it and 0xC00D28B1 before cleanup, fallback or another media item changes the context.
2. Associate it with its current WMDRM for Network Devices object and the requested action.
3. Run the direct check: record CRL issuer, signature, validity interval and download/update source.
4. 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.
5. Apply the targeted fix: obtain a current valid CRL through the DRM security-update path.

Do not merge these failures

Restore the required state

Recovery should change the failed precondition by choosing to obtain a current valid CRL through the DRM security-update path.

Technical references

• Windows Media DRM 10 for Network Devices
• Device registration
• Using the WMDRM-ND protocol
• MS-DRMND protocol specification