Word and Excel 365 won't launch from Docker or Application folder
I have two supposedly identical Mac Mini 2014s, Both have Office 365 installed. On one of them, when clicking on the Excel or Word icons in the docker, or clicking on the icons in the Applications folder, nothing happens. The Docker icon bounces for a bit, then stops. In the Applications folder the title bar goes gray for a bit -- as if the focus is shifting to another windows -- then goes back to color.
Clicking on a spreadsheet or Document will launch Excel or Word.
This had been working since installing Office 365 about 3 weeks ago and stopped working today. The other Mac Mini has no such problem.
Any ideas on this?
Mac mini 2018 or later