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Duo Mobile App Update Required by 2/2/26
Duo Mobile App Upgrade Required by February 2, 2026
Multi-Factor Authentication Requirement for Microsoft 365 Admin Center Access
Dartmouth College now requires multi-factor authentication (MFA) for all users accessing the Microsoft 365 Admin Center to enhance security. Users must configure MFA on CyberArk-managed accounts using an approved authenticator like Duo Security. Access will be blocked until MFA setup is complete.
Duo - How to Reactivate Duo Mobile on a Mobile Phone
This article describes how to activate Duo Mobile with a new mobile phone.
Manage your Devices
Duo Overview
Duo Security Update: Duo Multi-Factor Authentication (MFA) Attacks
Duo Push: The Best Way to Authenticate
Duo - Configure Security Key (YubiKey, Feitian, etc.)