Hi Michael,

Welcome to Box Community! 

To help address your issue, I created a new ticket and a member from Box Product Support will be in touch, please keep an eye out. 

Thanks for posting!

I just tried the old standby: rebooting the computer. That fixed the problem for the time being. I'm wondering if there are any settings I can adjust to avoid this issue.

And after closing Word, and then trying to reopen, I'm stuck again with the (incorrect) "Launching Application" message: