I just tried the new Outlook... Thankfully, I did it on a Saturday, or else I would have wasted work time. After loading and installing this mess... Upon the first launch, my Microsoft 365 Business Basic (E1) account is not recognized, and it's impossible to proceed further... Can't close the migration and revert to Outlook. I tried again and again... Nothing, just a message for my local administrator... which is me! Thank you very much... Uninstalling all this mess and going back to the old Outlook! I'm anxiously awaiting the expiration date!