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NS_S_WMPCORE_PLAYLIST_IMPORT_MISSING_ITEMS
Imported playlist is missing some original items
NS_S_WMPCORE_PLAYLIST_IMPORT_MISSING_ITEMS is HRESULT 856327 (0x000D1107) from Windows Media. The documented description is “The imported playlist does not contain all items from the original.” 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.
The status must be preserved until its code-specific output and next action have been processed.
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 this result 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 importer has identified exactly which entries were omitted and the remaining order is still meaningful. Without the boundary check, the HRESULT can hide stale output, pending ownership, or omitted work.
Correct handling and recovery
Complete the import as partial success, show the omitted items, and retain their original locations or identifiers for repair. Do not claim a lossless import.
Before repeating work after this result, reconcile side effects and prove that the next attempt is idempotent.
Difference from nearby results
This differs from total import failure: a usable playlist exists, but it is not equivalent to the original collection.
Practical scenario
A playlist references removable-media tracks that are offline. The player imports available entries, reports the missing paths, and offers relinking instead of silently shortening the list.
References
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