One or more embeddings in file file could not be filtered.
The specified file was filtered correctly, but several of the embedded objects could not be filtered. This message usually indicates the embedded objects do not have a registered filter. Typically, filters are associated with particular document formats. For example, Microsoft Word documents have their contents extracted by a different filter than Microsoft Excel documents. Text within unfiltered, embedded objects cannot be searched.
You can stop this message from being displayed by changing the value of the ContentIndex Registry entry. For more information, see Help for that Registry entry.