From the event viewer I have this messages:
Because no certificate has been configured for clients dialing in with EAP-TLS, a default certificate is being sent to user apex\crespima. Please go to the user's Remote Access Policy and configure the Extensible Authentication Protocol (EAP).
Could not retrieve the Remote Access Server's certificate due to the following error: Cannot find object or property.
Access request for user APEX\crespima was discarded.
Fully-Qualified-User-Name = apex.local/AR/COR4/APEX/Admin/Marco Crespillo
NAS-IP-Address = xx.yy.zz.qqq
NAS-Identifier = xx.yy.zz.qqq
Called-Station-Identifier = 000B86524250
Calling-Station-Identifier = 001B7730C077
Client-Friendly-Name = ArubaController800
Client-IP-Address = zz.xx.vv.rrr
NAS-Port-Type = Wireless - IEEE 802.11
NAS-Port = 1
Proxy-Policy-Name = Use Windows authentication for all users
Authentication-Provider = Windows
Authentication-Server = <undetermined>
Reason-Code = 23
Reason = Unexpected error. Possible error in server or client configuration.
this all 3 messagges repeats everytime I try to loggin.