Check the extension of the file. If it’s .docx or .doc, then it has got converted to word document. Try opening it with a software like MS Word. If you are able to open it, and edit it, it’s is word format.
Click to show/hide How to Get a Document to Open in Microsoft Office 2016 It is also important to know the different types of file types in Microsoft Office that Open With… will not recognize. PDF The following file types cannot be recognized by Office 2016 and cannot be opened with Open with… • PDF files (.docx, .pdf) • Word files (.doc, .docx) • Excel files (.xls) • PowerPoint files (.PPTX) • RTF files (.RTF) • Microsoft Word files (.doc) • OpenOffice.org files (.