SMS Authentication is Being Removed From Duo MFA
June 18, 2025
As of June 30th, 2025, SMS (text messages) will be removed as an authentication option within Duo MFA to improve account security. If you currently use SMS for authentication, you will need to migrate to one of the following methods as your primary authentication method before then.
- Recommended: Duo Mobile (requires mobile device)
- iPhone: Requires iOS 15.0 or greater
- Android: Requires Android 11.0 or greater
- Allows for push notifications and time-based code generation.
- Security Key
- Examples: Yubico Security Key, YubiKey, Token2
- Platform Authenticator
- Examples: Windows Hello, Apple Touch
- This option is limited to the device it was configured on.
- One-Day Passcode
- In a pinch, you can use ELMO to create a one-day passcode.
PLEASE NOTE: You are encouraged to set up more than one authentication method to ensure seamless access.
Additionally, phone calls as an authentication method will be removed in December 2025. Another announcement will be made closer to this date, but we recommend that you to transition to one of the alternative authentication methods mentioned above as soon as possible.
For more information, visit Nanook Technology Services鈥檚 Multi-factor Authentication site, or contact the Nanook Technology Service Desk.