Users are locked out when there are 5 consecutive failed login attempts.
Make sure the Duo Mobile application is open: A user lockout sometimes happens when the Duo Mobile application sends multiple attempts to authenticate that are not responded to. To reduce the number of unanswered push notifications, try opening the Duo application prior to sending the push request.
Authenticate to an enrolled and available device: Persistent attempts to authenticate to an inactive or incorrect device can cause a lockout. If you did not complete the enrollment process, multiple attempts to authenticate with Duo will cause a lockout.
Return to top