How do I use SMS text messages with Duo?


Duo is capable of texting passcodes to your mobile phone number, if you have one enrolled for your account. Each text message contains 6 passcodes. Each passcode can be used once and does not expire.

Obtaining Passcodes

When presented with the Duo prompt, click "Enter a Passcode".

Duo login prompt

A blue bar appears at the bottom of the prompt - click "Text me new codes". Duo texts a set of passcodes to your mobile phone number.

Duo prompt, entering a passcode

For future authentications, if you already have unused passcodes, you can enter it without needing new ones texted. Passcodes do not expire until used. If desired, they can be written down and carried in your wallet as backup in case you lose to access to your primary authentication method.

To use passcodes with the VPN, please refer to


Article ID: 1006
Fri 7/20/18 12:25 PM
Thu 7/26/18 8:14 AM