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NS_E_DRM_UNABLE_TO_OPEN_DATA_STORE
Meaning beyond the player message
When the client returns NS_E_DRM_UNABLE_TO_OPEN_DATA_STORE (0xC00D2782), the relevant condition is the DRM data-store file cannot be opened. This result belongs to local license store, secure store and machine binding, specifically the protected repositories that hold licenses and DRM state, together with the hardware and checkpoint data used to bind that state to one installation.
Capture path, account, ACL, lock owner and file-system status.
Why the producing layer matters
Two platform rules frame this result. 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. Machine-bound state cannot be diagnosed safely by copying store files between computers or by deleting the original before evidence is preserved.
Triage without destroying evidence
- Prove the boundary by ensuring you can capture path, account, ACL, lock owner and file-system status.
- After you restore supported access and ensure only the owning DRM component opens it, verify both the requested right and the final store/device state.
Minimum incident record
- Code-specific proof: capture path, account, ACL, lock owner and file-system status.
- Protected identity: license identifier and content key identifier (KID).
- Operation state: store path, file generation, access result and underlying system error.
- Persistence or transport: hardware identity and the last hardware or operating-system change.
- Security context: checkpoint, secure-store and registry persistence sequence.
- Correlation point: first store API call that failed: open, enumerate, save, close or query.
Recovery at the right layer
Resolve the underlying condition directly: restore supported access and ensure only the owning DRM component opens it. A player reinstall, reboot or new license request is useful only when it changes the condition “unable to open data store” and can be verified against the original evidence.
Representative case: Security software locks the DRM data store during player startup.
Why the symbolic name matters
| Result | Different condition |
|---|---|
NS_E_DRM_DATASTORE_CORRUPT | The DRM data store is readable but fails integrity or structure validation. |
NS_E_DRM_UNABLE_TO_LOAD_HARDWARE_ID | The DRM subsystem cannot obtain the machine identity used for protected-state binding. |
NS_E_DRM_CHECKPOINT_FAILED | The secure-state checkpoint cannot be created or committed. |
Completion criteria
Repeat the operation that originally returned it. Assert the exact HRESULT at the producing API in the failing “unable to open data store” fixture; then change only the relevant precondition and confirm that the corrected run completes without substituting a neighboring DRM result. After correcting it, verify the requested action and the final license-store, secure-clock, device or migration state relevant to “unable to open data store”.
Code-specific operational note
The user-facing message “A problem has occurred in opening the Digital Rights Management data storage file.
Technical references
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