| Previous | Next |
| NS_E_WMPCORE_WMX_LIST_ITEM_ATTRIBUTE_VALUE_EMPTY | NS_E_WMPCORE_MISNAMED_FILE |
NS_E_WMPCORE_LIST_ENTRY_NO_REF
How to classify this WMP result
The symbolic result NS_E_WMPCORE_LIST_ENTRY_NO_REF narrows 0xC00D1098 to the playback core list entry no REF condition: a playlist entry object reaches list construction without an attached media reference. Keep the playback core list entry no REF boundary visible when a later dialog reduces it to a general media error.
An additional test is to record the source XML node, list-entry object identity and conversion step that should attach its reference; that evidence is more useful than reinstalling the Player or changing several unrelated settings at once.
State worth preserving
Capture state before Player cleanup:
- What to verify: record the source XML node, list-entry object identity and conversion step that should attach its reference.
- 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.
Reproduce without destroying evidence
- Use this deciding observation for this condition: record the source XML node, list-entry object identity and conversion step that should attach its reference.
- Apply the smallest supported remedy for this condition: fix the parser/producer path so the constructed list entry carries a valid media URL.
What succeeds before this failure
Two rules frame this diagnosis. First, Windows Media metafiles are XML documents, but a well-formed document can still violate required ASX element and attribute rules. In this case, 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: The source node is accepted, but conversion to the internal list entry loses or rejects its reference.
Related HRESULTs with different meanings
| Result | Different condition |
|---|---|
NS_E_WMPCORE_WMX_LIST_ITEM_ATTRIBUTE_VALUE_EMPTY | An item-level WMX attribute has an empty or unusable lexical value |
NS_E_WMPCORE_WMX_LIST_ITEM_ATTRIBUTE_NAME_ILLEGAL | An item-level WMX attribute name is not legal for that media item scope |
NS_E_WMPCORE_WMX_LIST_ITEM_ATTRIBUTE_NAME_EMPTY | An item-level WMX attribute is emitted without a name |
Recovery at the right layer
The targeted correction for this condition is to fix the parser/producer path so the constructed list entry carries a valid media URL. Keep the original failing input until the same operation succeeds after one controlled change.
How to know the repair is real
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
Looking for a different code? Search another status or error code.