Overview
Duo is capable of texting passcodes to your mobile phone number, if you have one enrolled for your account. Each passcode can be used once and will expire two minutes after delivery.
Important! Duo SMS passcodes cannot be used if you enrolled in Secure MFA, which blocks Duo voice and SMS authentication methods. See
What is Secure MFA? for more information. Additionally, SMS service is deprecated and will be eliminated at a future date.
Obtaining Passcodes
When presented with the Duo prompt, click "Other options".
Select "Send text message passcode".
Enter the passcode and select "Verify".
Passcodes expire shortly after delivery.
Duo no longer sends 8 non-expiring passcodes. If you need other options, please obtain a Yubikey.