Duo Two-Factor Authentication (2FA)

Duo is tool that adds an extra layer of security to protect accounts and applications even if your password is compromised. It uses two-factor authentication (2FA) and multi-factor authentication (MFA) that requires a second form of verification in addition to a password. Duo lets you link multiple devices to your account, so you can use your mobile phone, a landline or a hardware token. 

Security Note: Do not approve a Duo prompt if you did not authorize it and change your password immediately.

Who is Eligible?

Duo is available for active faculty, staff and student employees. It is used on applications where Single-Sign On (SSO) is enabled such as OU Email and Microsoft 365.

Prerequisites and Expectations

After submitting a request or reporting an issue, a technician will reach out to provide support or fulfill the request.

How it works:
1. Initial Login: Users attempt to log in as usual, entering their username and password. 
2. Duo Verification: After the initial login attempt, Duo presents a prompt to verify the user's identity using a second factor. 
3. Verification Methods: Common verification methods include:

  • Duo Mobile app: Users receive a push notification on their mobile device and tap "Approve" to confirm their identity. 
  • SMS Passcode: A one-time passcode is sent via text message, which the user enters on the Duo prompt. 
  • Phone Call-back: Duo calls the user's phone, and they press a key to confirm their identity. 
  • Duo Fob (token): Users use a physical token to generate a unique passcode that they enter on the Duo prompt. 

Learn More

See the "Related Articles" section to view knowledge base articles related to this service.

Cost

Duo Tokens are by request at no cost. However, subsequent tokens, including lost or damaged tokens, will incur a replacement fee.

 

 
Request a Service Report an Issue

Related Articles (2)

A guide to adding a device to a Duo account.
A guide for Duo Two-Factor Authentication set-up.

Service Offerings (2)

Request Duo Security Token
For users who cannot use mobile-based authentication methods, such as when traveling abroad for business.
Report a Problem with Duo
Request assistance with login errors or token malfunctions.