Duo / Authenticate when enrolled device is lost, stolen, or unavailable

Objective

• To provide instruction on authenticating when enrolled device is lost, stolen, or unavailable
• To provide instruction on logging in when enrolled device is lost, stolen, or unavailable

Scope

• Your primary device has been lost or stolen, or is currently unavailable — and you enrolled only a single device for use with Duo
• Your primary device has been lost or stolen, or is currently unavailable — but you enrolled a secondary device with Duo (!)

Environment

• 312306: Duo Security Two-factor Authentication
• Duo Mobile App
  • Android, iPhone, or Windows smartphone
  • Android or iOS tablet
• Mobile Phone (cell phone other than a smartphone)
• YubiKey, Feitian or other hardware token

Resolution

I enrolled only one device

• Do you check the prompt in your browser that allows Duo to remember you for 14 days? If you did, you must open a private browser window to complete several of the steps below

1. Contact IT Help by phone at 513-529-7900 or by live chat at MiamiOH.edu/ITChat and request a one-time use bypass code, which will allow you to log in once so you can enroll another device
2. Once you have the bypass code, follow the appropriate instructions:
   • Open a private browser window on your computer and enroll a secondary device for use with Duo
   • To use the bypass code, at the Duo authentication prompt select the "Enter a Passcode" button and then enter the bypass code into the field that appears.
   • If you replaced your mobile phone and still use the same phone number, open a private browser window on your computer and install and reactivate the Duo Mobile app on your replacement phone

I enrolled a secondary device (!)

• Simply use the secondary device to authenticate as normal
• If you want to enroll a replacement device for the one that is unavailable, open a private browser window and enroll (another) secondary device for use with Duo
• If you replaced your mobile phone and still use the same phone number, open a private browser window on your computer and install and reactivate the Duo Mobile app on your replacement phone