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NS_S_WMPCORE_PLAYLISTCLEARABORT
Playlist clear operation was aborted by the user
NS_S_WMPCORE_PLAYLISTCLEARABORT is HRESULT 856318 (0x000D10FE) from Windows Media. AllStat describes it as “Failed to clear playlist because it was aborted by user.” The severity bit indicates a nonfailure result, but the value carries a specific condition that must not be collapsed into plain S_OK.
In the legacy Windows Media pipeline or Player state, this result means that failed to clear playlist because it was aborted by user. Treat it as a distinct branch whose postcondition must be proven before subsequent operations begin.
Where the status is encountered
- Windows Media source, reader, writer, or renderer callbacks; log the exact method and object state instead of interpreting the constant outside that contract.
- Windows Media Player SDK automation; log the exact method and object state instead of interpreting the constant outside that contract.
- Media graph, playlist, image, rights, or buffering state; log the exact method and object state instead of interpreting the constant outside that contract.
Because it is informational, a language binding may expose it as success and hide the symbolic distinction. Keep the original HRESULT available until the code-specific branch has run.
What must be true before accepting it
Verify that the playlist remains in a known state and the application does not assume every item was removed. The caller should make the acceptance test for this HRESULT explicit in code and telemetry.
Inspect the current generation of every affected object before deciding what happens next.
Evidence and telemetry
- preserve playlist identity and version.
- preserve items before and after.
- preserve abort initiator.
- preserve current selection.
- preserve pending persistence operation.
Also record ns_s_wmpcore_playlistclearabort_operation, ns_s_wmpcore_playlistclearabort_state_before, ns_s_wmpcore_playlistclearabort_state_after, UTC time, process and thread identifiers, component version, and a correlation ID. Evidence for this HRESULT should be reproducible but sanitized, with sensitive buffers represented by length and hash.
Difference from nearby results
It must be distinguished from ordinary S_OK and from failure-severity values in the same API family; its documented state changes control the next action.
Exact handling of it matters because a generic success path cannot express its required next action.
Correct handling and recovery
Refresh the actual playlist contents, preserve user selection, and remove partial side effects only when the operation contract permits.
Retry it only when a documented input or state has changed. Distinguish protocol continuation from retrying the entire high-level operation.
Practical scenario
A user cancels clearing a long playlist. The UI reloads the collection and shows the items that remain instead of displaying an empty list.
A regression test should reproduce it, assert the relevant outputs and state, then change only the decisive condition and verify the expected neighboring result or ordinary completion.
References
- Microsoft: Windows Media Format SDK error codes — official Microsoft material used to interpret it.
- Microsoft: Windows Media Player SDK
- Microsoft: Windows Media Player buffering event
- Microsoft: HRESULT values
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