What does HRESULT 0xC00D2715 (NS_E_DRM_SECURE_STORE_UNLOCK_ERROR) mean?

NS_E_DRM_SECURE_STORE_UNLOCK_ERROR

The exact DRM condition

NS_E_DRM_SECURE_STORE_UNLOCK_ERROR is Windows Media DRM HRESULT 0xC00D2715. It identifies the client cannot unlock secure-store state required for DRM processing. The useful scope is the protected repositories that hold licenses and DRM state, together with the hardware and checkpoint data used to bind that state to one installation; it is not a generic statement that the media player, network or file system failed, while tracing secure store unlock error.

For NS_E_DRM_SECURE_STORE_UNLOCK_ERROR, the built-in message summarizes the user-visible outcome, while the symbolic phrase “secure store unlock error” preserves the exact WMDRM boundary for diagnosis. For this code, the proof step is to record machine-binding, credential/protection context and the earliest unlock status, for the secure store unlock error boundary.

The surrounding protocol and store state

A license is stored in the protected local license store after acquisition; a store failure is therefore distinct from a server refusing to issue a license, during secure store unlock error diagnosis. For NS_E_DRM_SECURE_STORE_UNLOCK_ERROR, machine-bound state cannot be diagnosed safely by copying store files between computers or by deleting the original before evidence is preserved, in a secure store unlock error incident.

Evidence worth preserving

Capture the first NS_E_DRM_SECURE_STORE_UNLOCK_ERROR occurrence before automatic retry, player teardown, store repair or license reacquisition changes the state, for this secure store unlock error result. The smallest useful record contains:

• Code-specific proof: record machine-binding, credential/protection context and the earliest unlock status, when reproducing secure store unlock error.
• Protected identity: first store API call that failed: open, enumerate, save, close or query, within the secure store unlock error workflow.
• Operation state: license identifier and content key identifier (KID), in the secure store unlock error path.
• Persistence or transport: store path, file generation, access result and underlying system error, while tracing secure store unlock error.
• Security context: hardware identity and the last hardware or operating-system change, for the secure store unlock error boundary.
• Correlation point: checkpoint, secure-store and registry persistence sequence, during secure store unlock error diagnosis.

For the “secure store unlock error” investigation, use KIDs, license IDs, hashes, certificate thumbprints, sizes and timestamps where possible. While diagnosing NS_E_DRM_SECURE_STORE_UNLOCK_ERROR, do not place content keys, complete license blobs, passwords, cookies or decrypted media in ordinary logs, in a secure store unlock error incident.

Related codes and the diagnostic split

Several values can accompany the “secure store unlock error” condition in one incident. Order the NS_E_DRM_SECURE_STORE_UNLOCK_ERROR event chain by timestamp and prefer the first code produced at the lowest specific boundary over a later player-level summary, in the secure store unlock error path.

Diagnostic sequence

1. Preserve NS_E_DRM_SECURE_STORE_UNLOCK_ERROR, the calling interface and the first lower-level status before a wrapper replaces it, while tracing secure store unlock error.
2. Correlate NS_E_DRM_SECURE_STORE_UNLOCK_ERROR with one KID/license ID, content hash, device certificate or migration operation ID for the “secure store unlock error” path.
3. For NS_E_DRM_SECURE_STORE_UNLOCK_ERROR, reconstruct the state transition immediately preceding “secure store unlock error” instead of starting from the final player dialog.
4. Prove the boundary by ensuring you can record machine-binding, credential/protection context and the earliest unlock status, for the secure store unlock error boundary.
5. After you restore the matching protected context or supported machine state, verify both the requested right and the final store/device state, during secure store unlock error diagnosis.

Correcting the producing condition

Resolve NS_E_DRM_SECURE_STORE_UNLOCK_ERROR at its producing boundary: restore the matching protected context or supported machine state, in a secure store unlock error incident. For NS_E_DRM_SECURE_STORE_UNLOCK_ERROR, a player reinstall, reboot or new license request is useful only when it changes the “secure store unlock error” boundary and can be verified against the original evidence.

Representative case: A restored installation sees the secure-store files but cannot open their protected contents, for this secure store unlock error result.

Regression check

Repeat the operation that originally returned NS_E_DRM_SECURE_STORE_UNLOCK_ERROR. For NS_E_DRM_SECURE_STORE_UNLOCK_ERROR, assert the exact HRESULT at the producing API in the failing “secure store unlock error” fixture; then change only the decisive precondition and confirm that the corrected run completes without substituting a neighboring DRM result. After correcting NS_E_DRM_SECURE_STORE_UNLOCK_ERROR, verify the requested action and the final license-store, secure-clock, device or migration state relevant to “secure store unlock error”.

Code-specific operational note

The symbolic phrase “secure store unlock error” is the important search and telemetry key for NS_E_DRM_SECURE_STORE_UNLOCK_ERROR. Keep it beside the exact value 0xC00D2715; the official message “A problem has occurred in the Digital Rights Management component, for the secure store unlock error boundary. Contact Microsoft product support, during secure store unlock error diagnosis.” is useful to users, but it does not identify the producing API, object generation or protected identity on its own, in a secure store unlock error incident.

Technical references

• Licenses and the local license store — platform documentation used to distinguish NS_E_DRM_SECURE_STORE_UNLOCK_ERROR from adjacent results.
• Enumerating licenses in the local store — official Windows Media DRM context for NS_E_DRM_SECURE_STORE_UNLOCK_ERROR.
• DRM client interfaces — API and state rules relevant to this NS_E_DRM_SECURE_STORE_UNLOCK_ERROR boundary.
• Windows Media DRM error codes — platform documentation used to distinguish NS_E_DRM_SECURE_STORE_UNLOCK_ERROR from adjacent results.

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