This is a quirk between Microsoft 365 and macOS. When you see the banner across the top of the application window, click on the button on the far right side that says "Use Another Account." Enter your ...

They seem to only appear along the top as a banner ad, but they're still drawing the ire of users who pay extra to use Microsoft 365's features. How-To Geek tried the app for itself, and it ...

For example, in Word, a cautionary banner would pop up that says, "Your Microsoft 365 license will be deactivated soon," and this is followed by "... most features of Word will be disabled.