rMBP running windows 7 RDP issues

We have several users running rMBP 15" with Windows 7 installed. From win7 they attempt to RDP to a Mac Pro running win7 and the RDP client will attempt to connect then disconnect immediately. Does anyone know a resolution to this problem? the only thing I have been able to find out is if we uninstall bootcamp from the mac pro, the connection will be complete, but by uninstalling bootcamp you lose all keyboard functions in win7 and the ability to easily reboot in mac. Does anyone know any other way to fix this issue?