What does HRESULT 0xC00D0FB9 (NS_E_WMPXML_EMPTYDOC) mean?

NS_E_WMPXML_EMPTYDOC

What NS_E_WMPXML_EMPTYDOC tells you

The result NS_E_WMPXML_EMPTYDOC (0xC00D0FB9) means the WMP XML parser object contains no document data when the caller tries to persist or use it. The name is useful only when tied to the object and state that produced it; neighboring HRESULTs in the same subsystem can represent later stages.

Build a minimal reproduction

Record whether load/parse ever succeeded, input length, parser reset/clear calls, and the operation that expects a populated document.

Keep those inputs stable while testing one prerequisite at a time. Load or create the document before the persist/use call and verify the parser contains a root node at that boundary.

References

• XML DOM.
• IXMLDOMElement.