To import Microsoft Word *.doc or *.docx files, the free "Microsoft Office Compatibility Pack for Word, Excel, and PowerPoint File Formats" must be installed on the system. It is automatically installed with some older versions of Microsoft Office but not with the latest versions. It can be downloaded from Microsoft's web-site at https://www.helpndoc.com/sites/default/files/downloads/office-converter/FileFormatConverters.exe