RAS VPN for Domain Users

Hi All,

I have setup a test lab at home and have a AD as well on my Windows 8 Hyper V. My RAS server is a Windows 2008 Server VM. The problem is, when I try to connect VPN and the server is in the domain, it does not accept credentials and keeps popping the window. but when i remove is from domain it works fine. My clients are Windows 8 Machines.

Any help here please?

Mateen Fugawala