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NS_E_WMPCORE_MEDIA_NO_CHILD_PLAYLIST
Diagnosing NS_E_WMPCORE_MEDIA_NO_CHILD_PLAYLIST
0xC00D10B9 maps to this result. Its actionable interpretation is the playlist manager cannot satisfy the playback core media no child playlist structural or runtime condition 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 |
|---|---|
| What to verify | Record playlist bytes, element stack, resolved URLs and current item/alternate state |
| Artifact identity | Playlist URL, format, response content type and exact downloaded bytes for this reproduction |
| Runtime state | ASX version and element stack at the failure for this reproduction |
| Owning object | Resolved base URL for REF or ENTRYREF targets for this reproduction |
| Lower-level result | Current item index, alternate index and nested-playlist depth for this reproduction |
| Correlation | Repeat/event point and the media object expected at its start or end for this reproduction |
Representative case: The playlist is present, but one reference, boundary or item state is inconsistent.
Focused test and correction
- Confirm the failure directly: record playlist bytes, element stack, resolved URLs and current item/alternate state.
- After you correct the specific playlist construct or state transition, recreate the owning WMP object and verify that the corrected generation completes.
Nearby results with different conditions
| Result | Different condition |
|---|---|
NS_E_WMPCORE_MEDIA_CHILD_PLAYLIST_UNAVAILABLE | The playlist manager cannot satisfy the playback core media child playlist unavailable structural or runtime condition |
NS_E_WMPCORE_PLAYLIST_EMPTY_NESTED_PLAYLIST_SKIPPED_ITEMS | A nested playlist yields no playable items after invalid or unsupported children are skipped |
NS_E_WMPCORE_NO_PLAYABLE_MEDIA_IN_PLAYLIST | The playlist parsed, but every item failed availability, format, rights or graph checks |
Verification
Technical references
- Windows Media metafile reference — API or format context.
- Metafile elements reference — documentation for this result.
- ENTRYREF element — normative or platform material relevant to this result.
- REPEAT element
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