Acrobat add-in disabled by Word 2016

I'm using Acrobat Pro DC with Word 2016 on a Windows 10 computer, all purchased new in October 2015. I have Acrobat as an add-in in Word so that I can click on a single button in Word to create the pdf. This has worked fine until recently when sometimes, and now always, each time I click this button, Windows shuts down and tells me that there is a problem with the add-in. It suggests I disable it and check for updates. When I do so and reinstall the problem recurs.