I am using remote desktop connection version 8.0.18 to remote connect from my max OS X 10.10.3 to our server which is windows XP terminal server 2008 R2. I first connect to a VPN then remote desktop. This works fine on my mac yet two colleagues who also have the same version of remote desktop connection are unable to connect at all. When the remote desktop is started for them is says initialising and the connecting RDP and then doesn't connect and just goes back to the original microsoft remote desktop screen on their desktop!
I had been using version 8.0.17 until about half an hour ago when I upgraded it to the latest version. Connecting from a windows PC is not an issue at all.
Why should I be able to connect but two colleagues with exact same settings are unable to connect?