What does HRESULT 0xC00D2757 (NS_E_DRM_UNABLE_TO_CREATE_HEADER_OBJECT) mean?

NS_E_DRM_UNABLE_TO_CREATE_HEADER_OBJECT

What failed in WMDRM

0xC00D2757 maps to NS_E_DRM_UNABLE_TO_CREATE_HEADER_OBJECT. Read it as a result from protected content header, keys and cryptographic processing: the DRM runtime cannot create the content-header object required for this operation. Keeping the “unable to create header object” boundary intact prevents a later playback message from hiding the original DRM failure.

Place in the DRM workflow

The workflow around this result matters: a malformed content header, an invalid license XML document and a decryption failure occur at different boundaries and require different replacement artifacts. In addition, protected content should be identified by hashes and KIDs in support records; content keys and complete license blobs should not be exposed.

State to capture before retry

• Code-specific proof: record the factory/interface call, runtime and stub-library versions, outer object state and first inner HRESULT.
• Protected identity: KID, license ID and key-selection result.
• Operation state: algorithm, key length and coding object type.
• Persistence or transport: signature or certificate validation status.
• Security context: first failing sample offset rather than only the player-level message.
• Correlation point: ASF/DRM header bytes and declared version.

A useful investigation order

1. Locate the earliest API return, callback or event containing this result and 0xC00D2757.
2. Identify the exact content, license, store, device or migration object instance involved in “unable to create header object”.
3. Determine whether “unable to create header object” occurred before network exchange, during response validation, while enforcing policy, or while committing protected state.
4. Perform the code-specific check: record the factory/interface call, runtime and stub-library versions, outer object state and first inner HRESULT.
5. Make one targeted change — correct component/version or initialization state and create a fresh content-header object — and repeat the same producing operation.

Targeted fix

To correct this, correct component/version or initialization state and create a fresh content-header object. Preserve the original content/header, store or migration material until the operation succeeds and survives a fresh application object or required restart.

Representative case: The application reaches the content-header stage but object construction fails before any content or server work begins.

Nearby results with different meanings

Verification after correction

After the repair, recreate the WMDRM object and run the smallest reproducer. Confirm that 0xC00D2757 no longer occurs, that the intended license action completes, and that no store, certificate, clock or migration warning replaces it.

What the missing object would have owned

The content-header object normally parses or constructs DRM header fields such as KID and acquisition metadata. Object creation fails before that responsibility can be transferred to a live interface, so later player or server messages are secondary.

For this object specifically, preserve the header version, byte length, KID and license acquisition URL. A successful fix should create a new content-header object and then complete its first real operation, not merely make the factory call return a different generic error.

Technical references

• Overview of Windows Media DRM.
• DRM protection and license distribution — platform documentation used to distinguish this result from adjacent results.
• DRM versions.
• Windows Media DRM error codes