The Unsupported files report is an Excel report available for Vault Admins that shows all documents that either are not converted or not text recognizable.
If a document is not converted, this means the document can't be displayed in the document viewer.
The document types that are supported are: .pdf, .doc, .ppt, .xls, .msg, .jpeg, .png, .tiff
The document types that are not supported are: .zip .dwg .xlsm .xlsb .vsd, FlashPDF, password protected files.