Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
I used the first of the two methods shown in the Youtube video. It allowed me to open Word and use it. I don't know how long the fix will last, but it's a lot easier than reinstalling Office. I hope MS is paying attention to this thread and creates a fix. In my case the problem started after an OS update that was sent to my computer a couple days ago which I ran yesterday. Thank you "Murugan S" for the video and YogeshJain2 for suggesting it.