| Previous | Next |
| NS_S_WMPBR_SUCCESS | NS_S_WMPEFFECT_TRANSPARENT |
NS_S_WMPBR_PARTIALSUCCESS
Windows Media backup or restore completed with limitations
NS_S_WMPBR_PARTIALSUCCESS is HRESULT 856374 (0x000D1136) from Windows Media. AllStat describes it as “Transfer complete with limitations.” In the Windows Media Player, Windows Media Format, DRM, or Media Foundation state machine, the value reports a nonfailure state that must not be collapsed into plain S_OK.
Wrappers should not translate this result to an undifferentiated Boolean before state handling finishes.
Where the status is encountered
- Windows Media Player library, playlist, store, or UI plug-in callbacks; capture the exact API, object, and phase because the same numeric success severity does not define the state by itself.
- Windows Media Format source, writer, DRM, publishing-point, or installation operations;
- Media Foundation topology activation and remote-component setup;
Keep it attached to the operation that returned it. Interpreting it outside that API contract can turn a normal continuation or partial result into an incorrect retry or false completion.
What must be true before accepting it
Verify that the successful subset and every omitted or degraded item are known before the user relies on the backup or restored state. Without the boundary check, the HRESULT can hide stale output, pending ownership, or omitted work.
Also confirm that returned outputs belong to the current operation generation and were not inherited from an earlier attempt.
Correct handling and recovery
Preserve the usable output, enumerate limitations, and retry only affected items after correcting their specific cause. Do not overwrite the last complete backup with an unqualified partial set.
Continuation after it within the documented state machine is different from restarting the entire operation.
Difference from nearby results
This is not complete backup success and not total failure; it requires a per-item reconciliation path.
The neighboring result changes whether output is final, more work remains, or fallback is required.
Practical scenario
A restore recovers most licenses but skips two expired entries. The application lists them, retains the previous backup, and marks the new restore as partial.
References
- Microsoft: Windows Media Format SDK error and success codes
- Microsoft: Windows Media Player SDK
- Microsoft: Media Foundation SDK
- Microsoft: HRESULT values
Looking for a different code? Search another status or error code.