How satisfied are you with this reply?As of September 25,macOS Office for Mac is fully supported on High Sierra. I have the same question Office and started off as bit but with free updates are now bit. You can follow the question or vote as helpful, but you cannot reply to this thread. Microsoft Office support for macOS 10.14 Mojave Will Microsoft update Office to accommodate the bit technology of Apple's update? Please advise. It prompts me to get the latest version from the app store, however, my product key does not work for the new version for Word.

My Microsoft Word and other Microsoft products no longer will open. All support for ended in October Did this solve your problem? Yes No. Updating Mac OS to They will display the warning that some day in the future Apple will discontinue support for Office - and that day has come with Mac OS But you didn't install Catalina so all your apps should still work fine.