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NS_E_DRM_OPERATION_CANCELED
Where the operation stopped
NS_E_DRM_OPERATION_CANCELED is Windows Media DRM HRESULT 0xC00D2768. It identifies the active DRM operation was canceled before completion. The useful scope is the application-facing layer that initializes DRM support, validates parameters and properties, creates specialized objects, and delivers asynchronous status to the caller; it is not a generic statement that the media player, network or file system failed.
Diagnostic sequence
- Start from
0xC00D2768and map it to the first WMDRM object that returned it. - Separate content/header evidence, license evidence, machine/device evidence and service/network evidence around “operation canceled”.
- Before retrying this result, check whether another “operation canceled” operation was active or whether the previous result may have committed partially.
- Identify who requested cancellation and whether a partial server or store operation completed.
- Apply the smallest supported fix: settle the canceled generation before presenting a retry; avoid resetting unrelated protected state.
Evidence worth preserving
- Protected identity: first inner HRESULT before an application replaces it with a generic error.
- Operation state: exact interface method and object type being created.
- Persistence or transport: SDK/runtime version and linked DRM stub library.
- Security context: property name, type, size and initialization order.
- Correlation point: operation state, callback sequence and cancellation owner.
The surrounding protocol and store state
The DRM client exposes different objects for license management, individualization, encryption, backup, metering and device registration; failure to create one object does not prove that all DRM state is damaged. Many operations are asynchronous and stateful, so object lifetime and completion ordering are part of the API contract.
Correcting the producing condition
The supported response to this result is narrow: settle the canceled generation before presenting a retry. After correcting it, reopen or recreate the object that owned “operation canceled” so the verification does not reuse state from the failed operation.
Representative case: The user closes the acquisition dialog while a challenge is in flight.
Related codes and the diagnostic split
| Result | Different condition |
|---|---|
NS_E_DRM_UNABLE_TO_CREATE_PLAYLIST_OBJECT | The DRM runtime cannot create the playlist object required for this operation. |
NS_E_DRM_UNABLE_TO_CREATE_PLAYLIST_BURN_OBJECT | The DRM runtime cannot create the playlist-burn object required for this operation. |
NS_E_DRM_NOT_CONFIGURED | Required DRM properties have not all been supplied for the intended operation. |
Actions that do not prove a fix
- Avoid replacing the DRM HRESULT with a generic application exception before telemetry records it.
- Avoid retrying object creation in a loop without preserving the first HRESULT and runtime versions.
Regression check
A valid regression has two fixtures: one that deliberately produces “the active DRM operation was canceled before completion” and one that applies the targeted correction. Compare callback order, selected license/KID, final rights decision and persistence state; disappearance of the “operation canceled” dialog alone is not proof.
Technical references
- DRM client interfaces.
- DRM client programming guide — API and state rules for the DRM operation described here.
- Obtaining the required DRM library.
- Windows Media DRM error codes.
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