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NS_E_WMPOCX_UNABLE_TO_LOAD_SKIN
Meaning at the producing boundary
The symbolic result NS_E_WMPOCX_UNABLE_TO_LOAD_SKIN narrows 0xC00D0FEB to the ActiveX control unable to load skin condition: the control cannot apply the requested uiMode/skin and cannot restore the previous UI state. Keep the ActiveX control unable to load skin boundary visible when a later dialog reduces it to a general media error.
An additional test is to record prior uiMode, requested skin, load error and rollback error separately; 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, a local ActiveX control, a remoted control and the full-mode Player can share playback services while still having different window, docking and lifetime states. In this case, cross-apartment callbacks require valid marshaled interfaces; a working playback engine does not prove that the host still owns a usable event or error interface.
Representative case: A broken skin switch leaves the embedded control without either requested or prior view. The example isolates only the producing component.
State worth preserving
Capture state before Player cleanup:
- Decisive check: record prior uiMode, requested skin, load error and rollback error separately.
- Artifact: IWMPRemoteMediaServices result and isRemote/docked state.
- State: GIT cookie or marshaled event-interface generation.
- Object identity: shutdown order for host window, control, playback engine and plug-ins.
- Underlying evidence: host process and control version, uiMode and remote/local service type.
- Correlation: COM apartment type and thread that created the control.
Log paths, hashes, IDs, offsets, and HRESULTs. Exclude secrets and unrelated content from logs.
Reproduce without destroying evidence
- Start with the symbolic value this result; do not diagnose the failure from the final dialog alone.
- Record the bytes or object state that produced this condition before automatic recovery mutates it.
- Exclude a stale callback or superseded object generation as the source of this event.
- Use this deciding observation for this condition: record prior uiMode, requested skin, load error and rollback error separately.
- Apply the smallest supported remedy for this condition: load a validated skin from a fresh control state or restore a known-good uiMode.
Related HRESULTs, different boundaries
| Result | Different boundary |
|---|---|
NS_E_WMPOCX_REMOTE_PLAYER_ALREADY_RUNNING | An exclusive remote Player instance already owns the requested service role |
NS_E_WMP_EXTERNAL_NOTREADY | The WMP external automation object has not reached the state required by the call |
NS_E_WMPOCX_PLAYER_NOT_DOCKED | The requested action requires the remote Player to be in its docked embedded state |
If this result is followed by a broader “cannot play,” “cannot load,” or “operation failed” result, preserve the earlier event. A later wrapper error may be secondary.
Recovery at the right layer
The targeted correction for this condition is to load a validated skin from a fresh control state or restore a known-good uiMode. Keep the original failing input until the same operation succeeds after one controlled change.
- Avoid reusing an interface pointer directly on another COM apartment; it can destroy the artifact or state needed to explain this result.
- Avoid destroying the host window before recording control state and the first callback failure; that can replace the original HRESULT with a secondary failure from another layer.
How to know the repair is real
After correction, create a fresh Player, control, parser or playlist object and rerun the smallest reproducer for this HRESULT. Verify the resulting resource, list membership, saved file, library object or play state.
Practical interpretation
Use this result, 0xC00D0FEB and the symbolic phrase in traces. Correlate search keys with API and object.
Technical references
- Player control guide — documentation used to identify the producing boundary of it.
- Remoting the Windows Media Player control — normative or platform material relevant to it.
- Using skins with the control — API or format context for this HRESULT.
- IGlobalInterfaceTable interface It.
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