This list is a good summary. We have a lot of issues with logging in and two factor. Initial login and setup is particularly fraught.

And Teams. Everything. My personal favourite is document format screw ups (‘corruption’ might be the right word) depending on which Word was used (app, browser, Teams Word). It’s such a shit product. Document footer problems and page numbering issues are a complete waste of my time.

Spending the first 10 minutes of every call trying to get sound working for everyone. Hey Teams, don’t switch what mic you are using.