This guide was done on a MacBook Air with MacOS Monterey and Office 365 v. 16.57
If it's your first time running Outlook, you will probably get this screen: click on Add Others. If you do not have this screen, Go to the Tools Menu, then Accounts, then the + to add a new account.
Enter your full email address and click continue: Next it will spin for a bit and then ask for a provider. Choose Exchange: It will then prompt you for your credentials and the server name. Fill the form as shown: Next you will get a pop up regarding redirection. This is normal, and must be allowed. You should also check the box to Always use my response for this server, otherwsie this will keep popping up: You will then be presented with a completed dialog box, at which you can click done. Your mail and folders and calendar will start to download. It will take a while depending on the size of your mailbox.
