If you have Office 2016, you should be able to upgrade to the 64-bit version through Microsoft’s standard upgrade process if for some reason it hasn’t already been updated. If your version of Microsoft Office is older than Office 2016 v15.35, you’ll have to choose from a variety of costly or time consuming and complicated options. The most recent version of Apple’s MacOS - known as Catalina - is having a major impact on those who upgraded without understanding that their older 32-bit programs would no longer run. Question: I upgraded to Catalina on my Mac and now Microsoft Office won’t work what can I do?Īnswer: One of the side effects of tech companies taking their platforms to new levels is that, often times, older software programs will no longer work.