Legacy or basic authentication is a name Microsoft uses to refer to older authentication methods for accessing its applications and systems, specifically email. These legacy authentication methods do not support newer security features, such as Multi-Factor Authentication, so they are less preferred.
Legacy Authentication is Being Deactivated
Microsoft is deprecating the use of legacy authentication methods
Due to this planned deprecation and related security concerns of using legacy authentication, Seattle University will require users to switch to more secure methods of accessing their Seattle University email
How do I know if I'm using Legacy Authentication?
If Seattle University detects that your account is using legacy authentication, you should receive an email with instructions on how to update the method you use for connecting to your SU email.