There are two email/calendaring systems at Northwestern. Faculty and staff use Microsoft Office 365 (@northwestern.edu), and most students use Google G Suite (@u.northwestern.edu). These instructions guide you through configuring your Office 365 account in Outlook with Duo multi-factor authentication (MFA).
Note for members of Feinberg School of Medicine: The F5 Big-IP Edge client must be installed on your computer and connected to the server before configuring your Feinberg email. If you get the error "An encrypted connection to your mail server is not available" see these Knowledge Base articles for instructions connecting the client.