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NS_E_WMP_UI_VERSIONMISMATCH
What this HRESULT means
NS_E_WMP_UI_VERSIONMISMATCH is HRESULT 0xC00D0FDF. At the UI version mismatch checkpoint it means the skin requires a UI engine version different from the installed WMP skin runtime; the result belongs to the Windows Media Player skin, theme and control layout engine, not to an unspecified Player failure.
The additional test for the UI version mismatch condition is to record required version declaration and actual Player/skin engine version; that evidence is more useful than reinstalling the Player or changing several unrelated settings at once.
How to prove the condition
- Start with the symbolic HRESULT; do not diagnose UI version mismatch from the final dialog alone.
- Record the bytes or object state that produced UI version mismatch before automatic recovery mutates it.
- Exclude a stale callback or superseded object instance as the source of the UI version mismatch event.
- Use this deciding observation for UI version mismatch: record required version declaration and actual Player/skin engine version.
- Apply the smallest supported remedy for UI version mismatch: use a compatible skin definition or run it on the required supported version.
Minimum useful incident record
Capture the UI version mismatch state before the Player advances, reloads, rescans or destroys the owning object:
- What to verify: record required version declaration and actual Player/skin engine version.
- Artifact: control type, object ID and parent/child relation for the UI version mismatch reproduction.
Neighboring codes to separate
| Result | Different condition |
|---|---|
NS_E_WMP_UI_NOTATHEMEFILE | the XML is readable but does not define a WMP THEME document |
NS_E_WMP_UI_SUBCONTROLSNOTSUPPORTED | the skin declares child controls under a control type that does not support sub-controls |
NS_E_WMP_UI_SUBELEMENTNOTFOUND | a required child object is absent from the current skin object |
Technical references
- Windows Media Player skins — documentation for this HRESULT.
- Skin definition file structure — normative or platform material relevant to this HRESULT.
- Skin definition XML structure — API or format context.
- Skin files and package contents — documentation for this HRESULT.
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