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UM System is transitioning away from voice and SMS authentication as part of Microsoft's retirement of these services and the university's broader effort to strengthen account security through phishing-resistant MFA. Voice authentication will be disabled December 1, 2026, followed by SMS authentication on July 1, 2027. Users are encouraged to adopt Microsoft Authenticator passkeys or FIDO2 security keys (YubiKeys) and register two independent authentication methods to prevent account lockouts. I