What is a passcode?
Duo two factor authentication passcodes are 7-digit numbers that are unique to an individual and used as the second factor during the SSO 2FA process.
Passcodes are a good back-up two-factor method that can work at any computer and from anywhere a cellular connection is available. This method may work in unusual situations when Duo push notifications do not.
Passcodes can only be sent via SMS text message to an enrolled mobile phone. Click here to learn about enrolling a device.
- A passcode can only be used once
- After a new code is sent, an unused code will no longer be valid
- Only the requested passcode can be used for a given login session
Requesting a passcode
Duo defaults to using the last two factor method used. If this is test message passcode, simply click the ‘send’ button to receive a text on your phone.
If not, click the ‘Other options’ link when Duo prompts you on your computer, click ‘Text message passcode’, and enter the passcode sent to your phone into the Duo prompt.