Hey, we are using AirPort-Express stations at our office to provide a wireless network to our staff. The APs use WPA/WPA2-Enterprise to check the users authority against our RADIUS-Server. On Macs and iOS devices the connection to AP works fine but if we try to connect a Windows client, Windows shows up the login-screen, checks the password (if you try a wrong password it shows the login-screen again) but then it says that no connection is possible. We also tried it on another laptop (both using Windows 7 Professional), but it still does not work. Can anybody help us? Thanks!