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NS_E_WMPCORE_INVALID_PLAYLIST_URL
How to classify this WMP result
NS_E_WMPCORE_INVALID_PLAYLIST_URL is HRESULT 0xC00D10AF. At the playback core invalid playlist URL checkpoint it means the playlist URL is syntactically invalid or unusable by the playlist manager; the result belongs to the Windows Media playlist and metafile state machine, not to an unspecified Player failure.
An additional test is to record original string, parsed scheme, escaping and base-URL resolution; that evidence is more useful than reinstalling the Player or changing several unrelated settings at once.
Why the producing component matters
Before changing state, remember that Windows Media metafiles are XML documents, but a well-formed document can still violate required ASX element and attribute rules. A second platform rule is that relative references are resolved against the containing metafile URL, and nested playlists introduce a stack and a new base URL rather than a simple flat list.
Representative case: A relative path is passed without a base URL in a context that requires an absolute target.
How to prove the condition
- Use this deciding observation for this condition: record original string, parsed scheme, escaping and base-URL resolution.
- Apply the smallest supported remedy for this condition: supply a valid supported URL/path and preserve correct percent encoding.
Minimum useful incident record
Capture state before Player cleanup:
- What to verify: record original string, parsed scheme, escaping and base-URL resolution.
- Artifact: current item index, alternate index and nested-playlist depth.
- State: repeat/event state and the media object expected at its start or end.
- Object identity: playlist URL, format, response content type and exact downloaded bytes.
- Underlying evidence: ASX version and element stack at the failure.
- Correlation: resolved base URL for REF or ENTRYREF targets.
Targeted fix
The targeted correction for this condition is to supply a valid supported URL/path and preserve correct percent encoding. Keep the original failing input until the same operation succeeds after one controlled change.
Neighboring codes to separate
| Result | Different condition |
|---|---|
NS_E_WMPCORE_PLAYLIST_REPEAT_END_MEDIA_NONE | The runtime cannot find the Media object that should mark the end of a REPEAT block |
NS_E_WMPCORE_PLAYLIST_IMPORT_FAILED_NO_ITEMS | Library import produced no items from the selected playlist |
NS_E_WMPCORE_PLAYLIST_REPEAT_START_MEDIA_NONE | The runtime cannot find the Media object that should mark the beginning of a REPEAT block |
Completion criteria
Technical references
- Windows Media metafile reference — documentation for this HRESULT.
- Metafile elements reference — normative or platform material relevant to this HRESULT.
- ENTRYREF element — API or format context.
- REPEAT element
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