This KB Article References:
Duo Security Two-Step Login
This Information is Intended for: Faculty, Staff, Students
Last Updated: December 22, 2021
Average Rating: Not Rated
This Information is Intended for: Faculty, Staff, Students
Last Updated: December 22, 2021
Average Rating: Not Rated
Your feedback is important to us, help us by logging in to rate this article and provide feedback.
If a DUO device you previously added isn't authenticating correctly for DUO (either online or offline), reactivate DUO Mobile for that device. Having at least 2 devices connected to Duo or setting up Duo so that it asks you each time how you'd like to approve the log in will allow you to switch the way you authenticate if one way isn't working or available.
Why does this happen? Getting a new phone may trigger this issue even if data and apps were transferred over from the old phone.
- On a computer (or a browser on a device connected to the internet) go to the Duo Self-service Portal (https://duoselfservice.stonybrook.edu/), sign in with NetID/NetID password, and authenticate with DUO.
- If you get the message that Your account is not enabled for DUO, clear your browser cache and cookies and repeat from step 1 again.
- For the mobile device you need to reactivate duo on, click Device Options then Reactivate Duo Mobile
- Select the type of device (iPhone, Android, Windows Phone, Other) and click Continue
- Click I have Duo Mobile installed
- On the mobile device, open DUO and tap + near the top right
- With your mobile device, scan the barcode then click Continue
if Continue isn't clikable, click + on your mobile device again and scan the code
- Your device is now reactivated for DUO mobile.