2FA, No network access on mobile devices
I don’t have reliable cellular network access. Can I still use 2FA via my phone?
Yes, Open the Duo Mobile app on your smart phone and click on the down arrow icon next to “University of Illinois”
(Generate Passcode button on the
Microsoft device) to generate a numeric passcode that can be used even if your
phone does not have a network connection.
Enter the code provided in the Passcode field on the 2FA authentication screen.