Enrollment issue with initial logon prompt

We have a couple of users where their logon isn't working when they're attempting to enroll their devices. We have it configured where once the user selects their wifi/lan connection, it'll prompt for their email and password and will continue and then prompt for their azure logon info. They can't get past the initial logon. They're setup like everybody else and we've actually reset the password for one of them I even typed it in, but it take it. For testing, we enrolled them with a different account just to make sure the Mac was good. Has anybody come across this before? Thanks in advance