A family of Microsoft word processing software products for creating web, email, and print documents.
I had the same problem (Windows 10, Office Pro 2016) and finally got it solved after 3 1/2 hours on chat and phone with Microsoft Support.
The fix was to create a new user profile (just like what JimR had to do).
Of course, this generated a whole other set of problems, but they are readily fixable, just time consuming.
Hope this works for you!
Ruth
P.S. I had to run a repair on Acrobat to get the PDFMaker reinstalled after Office add-ins couldnt recognize the COM dll.