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NS_E_SHARING_STATE_OUT_OF_SYNC
How to classify this WMP result
The symbolic result NS_E_SHARING_STATE_OUT_OF_SYNC narrows 0xC00D0FF4 to this condition: the local library and sharing-service view disagree about the current state. Keep this boundary visible when a later dialog reduces it to a general media error.
An additional test is to record library generation, sharing service state and the operation that last changed membership; that evidence is more useful than reinstalling the Player or changing several unrelated settings at once.
What succeeds before this failure
Two rules frame this diagnosis. First, adding an item to the library does not move the underlying file, and a library row can survive after its path or shared object becomes unavailable. A scan, search or Home Media Experience request is stateful, so stale identifiers and overlapping operations must be separated from file-format failures.
Representative case for sharing state out of sync: The Player removes an item while a sharing request still targets the previous generation.
State worth preserving
Capture the sharing state out of sync state before the Player advances, reloads, rescans or destroys the owning object:
- What to verify: record library generation, sharing service state and the operation that last changed membership.
- Artifact: scan/search generation and the request that superseded it.
- State: first library or file-system HRESULT before the Player-level summary.
- Object identity: library type, database identity and user profile owning the operation.
- Underlying evidence: canonical local/UNC/URL path and file identity.
- Correlation: media object ID or HME container/item ID.
Reproduce without destroying evidence
- Preserve
0xC00D0FF4, the ErrorItem context and the object instance involved in the failing operation. - Confirm the failure directly: record library generation, sharing service state and the operation that last changed membership.
- After you resynchronize through supported library/sharing operations rather than editing database files, recreate the owning WMP object and verify that the corrected generation completes.
Related HRESULTs with different meanings
| Result | Different condition |
|---|---|
NS_E_MEDIA_LIBRARY_FAILED | The Player could not create or initialize the media library for the current user or installation context |
NS_E_MPDB_GENERIC | The media database operation failed without a narrower library HRESULT |
NS_E_WMP_ADDTOLIBRARY_FAILED | The Player failed while creating or committing a library entry for the supplied item |
Recovery at the right layer
Change the responsible precondition rather than masking the symptom: resynchronize through supported library/sharing operations rather than editing database files.
- Avoid deleting the entire media database before exporting the failing object IDs and paths; it can destroy the artifact or state needed to explain this result.
- Avoid assuming a successful file open proves that the library record and sharing view are current; that can replace the original HRESULT with a secondary failure from another layer.
How to know the repair is real
Keep one fixture that reproduces 0xC00D0FF4 and one corrected fixture that changes only the identified precondition.
Technical references
- Accessing the library programmatically — API or format context.
- MediaCollection object — documentation for this result.
- MediaCollection. Add method — normative or platform material relevant to this result.
- Error handling in the WMP object model
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