How you log into Office 365 will be changing soon. This fall, Multi-Factor Authentication (MFA) will be rolled out for Office 365. In the coming weeks, the Center for Information Technology Services (CITS) will hold a series of demos on how to register your MFA device as well as how to sign on to and interact with Office 365.
Check the CITS web page for MFA for a regularly updated schedule for these demos as well as other information regarding MFA.
Your IT support person will be providing you with more details.