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NS_E_WMPCORE_PLAYLISTEMPTY
Diagnosing NS_E_WMPCORE_PLAYLISTEMPTY
0xC00D1087 maps to this result. Its actionable interpretation is the current playlist contains zero media items at the point an item is required within the Windows Media playlist and metafile state machine; the producing mechanism is the layer that turns ASX/WAX/WVX/WMX or library playlists into Media objects, resolves REF and ENTRYREF URLs, expands nesting, handles EVENT and REPEAT blocks and advances to alternates.
Evidence that separates the result
| Field | What to record |
|---|---|
| Decisive check | Record playlist count, mutation sequence and the operation that expected the first item |
| Artifact identity | ASX version and element stack at the failure for the playback core playlist empty reproduction |
| Runtime state | Resolved base URL for REF or ENTRYREF targets for this reproduction |
| Owning object | Current item index, alternate index and nested-playlist depth for this reproduction |
| Lower-level result | Repeat/event boundary and the media object expected at its start or end for this reproduction |
| Correlation | Playlist URL, format, response content type and exact downloaded bytes for this reproduction |
Representative case: A playlist is created successfully, then cleared immediately before Play or item selection. The example isolates only the producing component.
Focused test and correction
- Confirm the failure directly: record playlist count, mutation sequence and the operation that expected the first item.
- After you add an item or handle the zero-item state before invoking item-dependent playback, recreate the owning WMP object and verify that the corrected generation completes.
Nearby results with different boundaries
| Result | Different boundary |
|---|---|
NS_E_WMPCORE_ITEMNOTINPLAYLIST | The requested Media object is not a member of the current Playlist generation |
NS_E_WMPCORE_PLAYLIST_EMPTY_OR_SINGLE_MEDIA | The requested playlist operation requires multiple items, but the list has at most one |
NS_E_WMPCORE_INVALIDPLAYLISTMODE | The playlist manager received a play-mode value it does not implement |
Verification
Repeat the original operation with a fresh owning object after the identified precondition is corrected. Treat this result as resolved only when that same operation passes this stage; preserve any later HRESULT as a separate failure.
Technical references
- Windows Media metafile reference — API or format context for this HRESULT.
- Metafile elements reference — documentation used to identify the producing boundary of this result.
- ENTRYREF element — normative or platform material relevant to this result.
- REPEAT element
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