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NS_E_WMPXML_ENDOFDATA
The exact condition behind the dialog
The symbolic result NS_E_WMPXML_ENDOFDATA narrows 0xC00D0FB5 to the XML parser end of data condition: the XML input ended while the parser still required bytes to complete a construct. Keep the XML parser end of data boundary visible when a later dialog reduces it to a general media error.
An additional test is to preserve the exact byte length and identify the unclosed token, element, attribute or entity at the end; 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: preserve the exact byte length and identify the unclosed token, element, attribute or entity at the end.
- Artifact: line/column or byte offset from any lower-level parser diagnostic.
- State: source URL or archive member and a hash of the exact XML bytes.
- Object identity: encoding declaration, byte-order mark and parser input length.
- Underlying evidence: last successful element, attribute or processing-instruction lookup.
- Correlation: parser state when GetParseError, persist or lookup was called.
Reproduce without destroying evidence
- Apply the smallest supported remedy for this condition: supply the complete document or correct the producer that truncated it.
What succeeds before this failure
Two platform rules frame the diagnosis. First, an XML document can be well-formed yet still fail the Windows Media schema or object-model rules expected by the caller. In this case, parser position, source encoding and the exact bytes supplied to the final parse call are more useful than a generic “bad XML” dialog.
Representative case: A downloaded skin definition ends halfway through an attribute value.
Related HRESULTs with different meanings
| Result | Different condition |
|---|---|
NS_E_WMPXML_NOERROR | The caller requested parse-error details when the parser had no stored error |
NS_E_WMPXML_PARSEERROR | The XML parser rejected the supplied document but exposed no more specific WMP parser result |
NS_E_WMPXML_ATTRIBUTENOTFOUND | The requested named attribute or attribute index is absent on the current element |
Recovery at the right layer
The targeted correction for this condition is to supply the complete document or correct the producer that truncated it. Keep the original failing input until the same operation succeeds after one controlled change.
- Avoid rewriting the XML before preserving the failing bytes and parser position; it can destroy the artifact or state needed to explain this result.
- Avoid treating a missing optional node as proof that the whole document is malformed; that can replace the original HRESULT with a secondary failure from another layer.
How to know the repair is real
Technical references
- Windows Media Player SDK — documentation for this HRESULT.
- Skin definition XML structure — normative or platform material relevant to this HRESULT.
- Windows Media metafile reference — API or format context.
- XML 1.0 specification
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