I used to have this working before but some update on Apple's, Microsofts or Java's side has broken things.
When a Mac user opens our portal through Safari the Java applet gets automatically reconised and he can log in. Then he can select a RDP app wich starts the tunnel. A window pops up wich tries to establish the tunnel. Everything seems to go well but in the end the following error occurs: The Requested operation requires you to log on to the endpoint with either of the following privileges: Local administator.
The Mac user is an administrator on his system.
Does anyone has an idea how to get Mac users to start up a tunnel?