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NS_E_WMP_UI_VIEWIDNOTFOUND
Where the Player stopped
Windows Media Player reports NS_E_WMP_UI_VIEWIDNOTFOUND (0xC00D0FE3) when currentViewID names a view that is not defined in the skin file. The UI view id not found condition is owned by 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 view id not found condition is to record currentViewID and all parsed view IDs with exact case; that evidence is more useful than reinstalling the Player or changing several unrelated settings at once.
Inputs that distinguish the causes
Preserve the first occurrence before retry or fallback changes the UI view id not found evidence. The following fields should identify the same object generation:
| Field | What to record |
|---|---|
| Decisive check | record currentViewID and all parsed view IDs with exact case |
| Artifact identity | THEME/version declaration and currentViewID for the UI view id not found reproduction |
| Runtime state | control type, object ID and parent/child relation for the UI view id not found reproduction |
| Owning object | resource path, decoded dimensions and transparency/mapping attributes for the UI view id not found reproduction |
| Lower-level result | event name, first handler and any duplicate handler declaration for the UI view id not found reproduction |
| Correlation | skin archive path, member list and selected.wms definition for the UI view id not found reproduction |
The surrounding WMP state
Do not confuse it with nearby results
| Result | Different boundary |
|---|---|
NS_E_WMP_UI_PASSTHROUGH | the skin hit-test path returned its internal pass-through result rather than selecting a control |
NS_E_WMP_UI_VERSIONPARSE | the WMP skin version processing instruction cannot be parsed |
NS_E_WMP_UI_OBJECTNOTFOUND | attributes were parsed for a skin object that was never constructed |
Investigation order
- Start with the symbolic value this result; do not diagnose UI view id not found from the final dialog alone.
- Record the bytes or object state that produced UI view id not found before automatic recovery mutates it.
- Exclude a stale callback or superseded object generation as the source of the UI view id not found event.
- Use this deciding observation for UI view id not found: record currentViewID and all parsed view IDs with exact case.
- Apply the smallest supported remedy for UI view id not found: define the view or point currentViewID to an existing view.
Verification after correction
What a real fix must change
- Avoid renaming arbitrary XML to.wms or repacking a skin without preserving its relative resource paths while investigating UI view id not found; it can destroy the artifact or state needed to explain this result.
Code-specific operational note
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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