With mobile connect built in with 8.1 does anyone know if it allows domain?

Attempting to provide two users with that ability to remote to office attempting to use SonicWall Mobile Connect that have Windows 8.1. In my research as also attempting to install the software was rejected and all other forums indicate that there is a built in mobile connect for Windows 8.1. Attempted to connect and failed. In further reading I did find one instance that Widows Domain check-in is not supported, has anyone else ran into this?