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NS_E_WMP_UI_SUBCONTROLSNOTSUPPORTED
The exact condition behind the dialog
0xC00D0FDE maps to NS_E_WMP_UI_SUBCONTROLSNOTSUPPORTED. Its actionable interpretation is the skin declares child controls under a control type that does not support sub-controls, within the Windows Media Player skin, theme and control layout engine; the producing mechanism is the XML-based skin loader that opens a skin package, finds its.wms definition, constructs views and controls, applies attributes and attaches event handlers to artwork-backed UI elements.
The generated part of the What Is page already shows the standard AllStat description for this HRESULT. The additional test for the UI subcontrols not supported condition is to record parent control type/ID and the child elements parsed beneath it; 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 UI subcontrols not supported evidence. The following fields should identify the same object generation:
| Field | What to record |
|---|---|
| Decisive check | record parent control type/ID and the child elements parsed beneath it |
| Artifact identity | event name, first handler and any duplicate handler declaration for the UI subcontrols not supported reproduction |
| Runtime state | skin archive path, member list and selected.wms definition for the UI subcontrols not supported reproduction |
| Owning object | THEME/version declaration and currentViewID for the UI subcontrols not supported reproduction |
| Lower-level result | control type, object ID and parent/child relation for the UI subcontrols not supported reproduction |
| Correlation | resource path, decoded dimensions and transparency/mapping attributes for the UI subcontrols not supported reproduction |
Logs for the UI subcontrols not supported case should retain exact paths or URLs, hashes, object IDs, offsets and HRESULT order where applicable. For UI subcontrols not supported, those logs should not contain credentials, protected-license payloads or unrelated library contents.
How this layer works
The UI subcontrols not supported workflow must be separated from a generic WMP failure: a skin package combines an XML definition with image and script resources; archive validity, schema validity and runtime object construction are separate checkpoints. For UI subcontrols not supported, it also matters that control properties such as image dimensions, minimum/maximum values and child-element support are evaluated after basic XML parsing succeeds.
A focused diagnostic sequence
- Start with the symbolic value this result; do not diagnose UI subcontrols not supported from the final dialog alone.
- Record the bytes or object state that produced UI subcontrols not supported before automatic recovery mutates it.
- Exclude a stale callback or superseded object generation as the source of the UI subcontrols not supported event.
- Use this deciding observation for UI subcontrols not supported: record parent control type/ID and the child elements parsed beneath it.
- Apply the smallest supported remedy for UI subcontrols not supported: move the children to a supported container or remove them.
Correct the producing condition
- Avoid renaming arbitrary XML to.wms or repacking a skin without preserving its relative resource paths while investigating UI subcontrols not supported; it can destroy the artifact or state needed to explain this result.
- Avoid editing several controls at once before identifying the first schema or construction failure; for UI subcontrols not supported, that can replace the original HRESULT with a secondary failure from another layer.
Why the symbolic name matters
| Result | Different boundary |
|---|---|
NS_E_WMP_UI_VERSIONMISMATCH | the skin requires a UI engine version different from the installed WMP skin runtime |
NS_E_WMP_UI_NOTATHEMEFILE | the XML is readable but does not define a WMP THEME document |
NS_E_WMP_UI_SUBELEMENTNOTFOUND | a required child object is absent from the current skin object |
What to search for in traces
Regression check
Technical references
- Windows Media Player skins — documentation used to identify the producing boundary of it.
- Skin definition file structure — normative or platform material relevant to it.
- Skin definition XML structure — API or format context for this HRESULT.
- Skin files and package contents — documentation used to identify the producing boundary of it.
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