Finaly found that deleting the WLANs file in /etc/NetworkManager/system-connections/ solved the problem. Also http://askubuntu.com/questions/285234/cannot-connect-to-wpa2-wpa-enterprise-peap-and-mschap?answertab=votes#tab-top gave the right hint.
Finaly found that deleting the WLANs file in /etc/NetworkMan ager/system- connections/ solved the problem. Also http:// askubuntu. com/questions/ 285234/ cannot- connect- to-wpa2- wpa-enterprise- peap-and- mschap? answertab= votes#tab- top gave the right hint.