In an effort to reduce phishing and account compromises some legacy authentication methods were disabled this morning. These older authentication methods don’t support multi factor authentication (Duo).

Some clients, particularly on mobile devices, may still be using these authentication methods and will need to be reconfigured. If you are experiencing issues connecting to Exchange email, removing and re-adding the account on the device should resolve the issue.

iOS Exchange Email Configuration: https://support.csuchico.edu/TDClient/1984/Portal/KB/ArticleDet?ID=15296

Android Exchange Email Configuration: https://support.csuchico.edu/TDClient/1984/Portal/KB/ArticleDet?ID=11691