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NS_E_SHARING_VIOLATION
Meaning at the producing boundary
0xC00D0FCF maps to NS_E_SHARING_VIOLATION. Its actionable interpretation is another handle’s sharing mode prevents the required WMP file access, within WMP file download, save and package persistence; the producing mechanism is the boundary where the Player resolves a path or URL, opens a source or destination, downloads or serializes content and commits the resulting playlist, skin or media-related file.
The generated part of the What Is page already shows the standard AllStat description for it. The additional test for the sharing violation condition is to identify the file, requested access/share flags and owning process/handle; that evidence is more useful than reinstalling the Player or changing several unrelated settings at once.
Evidence to capture before retry
Preserve the first occurrence before retry or fallback changes the sharing violation evidence. The following fields should identify the same object generation:
| Field | What to record |
|---|---|
| Decisive check | identify the file, requested access/share flags and owning process/handle |
| Artifact identity | destination directory, temporary file and final rename/replace result for the sharing violation reproduction |
| Runtime state | file attributes, owner, ACL and sharing handles for the sharing violation reproduction |
| Owning object | bytes received/written, expected length and final hash for the sharing violation reproduction |
| Lower-level result | original URL/path and final redirected or canonical location for the sharing violation reproduction |
| Correlation | HTTP status/content type or local CreateFile-style access outcome for the sharing violation reproduction |
Logs for the sharing violation case should retain exact paths or URLs, hashes, object IDs, offsets and HRESULT order where applicable. For sharing violation, those logs should not contain credentials, protected-license payloads or unrelated library contents.
How this layer works
The sharing violation workflow must be separated from a generic WMP failure: download, parse and save are separate stages: a successful HTTP response does not prove that the payload is valid or that the destination can be committed. For sharing violation, it also matters that read-only attributes, sharing modes, redirected paths and streamed sources can prevent persistence even when playback succeeds.
Representative case for sharing violation: A playlist editor holds the destination without FILE_SHARE_WRITE while WMP saves it. For sharing violation, the example isolates the producing boundary without assuming that the library, codec stack, skin engine and ActiveX host all failed together.
A focused diagnostic sequence
- Preserve
0xC00D0FCF, the ErrorItem context and the object generation involved in sharing violation. - Compare the failing sharing violation artifact with a known-good artifact that differs only in the suspected property.
- Separate acquisition, parsing, object construction, playback and persistence until the owner of sharing violation is clear.
- Confirm sharing violation directly: identify the file, requested access/share flags and owning process/handle.
- After you close or coordinate the conflicting owner and repeat the same operation for sharing violation, recreate the owning WMP object and verify that the corrected generation completes.
Correct the producing condition
For the sharing violation result, change the responsible precondition rather than masking the symptom: close or coordinate the conflicting owner and repeat the same operation. For sharing violation, a retry is meaningful only after that recorded condition changes.
- Avoid retrying save under a new name without recording the failing destination and access mode while investigating sharing violation; it can destroy the artifact or state needed to explain this result.
- Avoid treating a downloaded error page as a valid playlist, skin or media package; for sharing violation, that can replace the original HRESULT with a secondary failure from another layer.
Why the symbolic name matters
| Result | Different boundary |
|---|---|
NS_E_FILE_FAILED_CHECKS | the file fails the Player library admission checks before it can be added |
NS_E_DAMAGED_FILE | the media parser identifies structural corruption in a file selected for use |
NS_E_WMP_RECORDING_NOT_ALLOWED | the selected content rights do not permit the requested recording or burn action |
If this result is followed by a broader “cannot play,” “cannot load,” or “operation failed” result, preserve the earlier sharing violation event. In the case, the later code can be a consequence from a wrapper, fallback item or UI layer rather than the producing failure.
What to search for in traces
Use this result, 0xC00D0FCF and the phrase “sharing violation” together in traces and issue searches. Keep those keys beside the producing API, object ID, URL or file offset so the sharing violation event remains distinguishable from a generic Player message.
Regression check
Keep one fixture that reproduces 0xC00D0FCF and one corrected fixture that changes only the sharing violation precondition. The sharing violation correction is complete when the intended operation succeeds without being replaced by a neighboring WMP HRESULT.
Technical references
- Supported protocols and file types — API or format context for it.
- File name extensions — documentation used to identify the producing boundary of this result.
- Windows Media Player SDK — normative or platform material relevant to this result.
- Error handling in the WMP object model — API or format context for it.
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