The way some members of the University of Missouri System sign in to university services is changing.

Microsoft is retiring voice phone call and SMS text message authentication, and users who currently rely on these methods will need to enroll in another authentication method to maintain access to university services. To help prepare, UM System is encouraging affected users to switch to the Microsoft Authenticator app.

Voice authentication ends Dec. 1, 2026, while SMS text authentication ends July 1, 2027. Most users can make the switch to the Microsoft Authenticator app in just a few minutes.

As Microsoft discontinues older authentication methods such as text messages and phone calls, now is a good time to adopt a more secure sign-in method. Moving to phishing-resistant MFA can help protect your account while preparing you for future authentication changes.