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NS_E_WMX_ITEM_DOES_NOT_EXIST
Understanding NS_E_WMX_ITEM_DOES_NOT_EXIST in a Windows Media playlist
NS_E_WMX_ITEM_DOES_NOT_EXIST (0xC00D1071) is returned when the requested playlist item index or identity is not part of the current playlist generation.
Distinguish in-memory Playlist state, WPL or ASX parsing, nested-list expansion, Media-object resolution and execution of referenced items. In this case, the failure condition is the requested playlist item index or identity is not part of the current playlist generation.
Minimal playlist experiment
- Freeze the current object state and collect playlist count, requested index, item URL, mutation history and whether an auto playlist was refreshed.
- Reproduce it once without automatic retries or fallback applications.
- Change only one precondition: enumerate the list immediately before the operation and use an item returned by that enumeration.
- Compare the first nested status and next Player event with the failed run.
- After testing it, restore the original configuration if the change was diagnostic only.
What the result means
| Retest outcome | Interpretation |
|---|---|
| A later HRESULT appears | The rejected condition — the requested playlist item index or identity is not part of the current playlist generation — was cleared; diagnose the new code at its own layer. |
Actions that obscure the cause
- caching numeric indexes across playlist rebuilds.
Technical references
- Windows Media Player SDK
- Windows Media Playlists
- Windows Media Playlist elements
- Managing playlists
- Microsoft HRESULT registry
After remediation, a different downstream HRESULT indicates progress and should be recorded as a separate condition.
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