Using older versions of Outlook for Mac in business environments
We upgraded to MS365 because our MS Teams trial ran out. Boy are we regretting the upgrade. We kind of forgot why we'd avoid MS for all these years.
I love it how to remove a calendar you have to go it "Add calendar". Like going to the start menu to shut down.
Best of all though, since we upgraded we've lost the ability to access the files client's have shared with us via OneDrive because of some issue with an old deleted account of ours blocking us.