Hi, Can somebody indicates me if there is any log that can help me identifying the problem with my Windows XP client trying to authenticate to the radius server. I do not know how to interpret the RADIUS/DECODE: parse response no app start; FAIL since no communication was establish between the AP and the radius server. Thanks for your help Stephane The following is the debug output from the Ciso AP dot11_auth_dot1x_send_id_req_to_client: Sending identity request to 0012.f078.xxxx *dot11_auth_dot1x_send_id_req_to_client: Client 0012.f078.xxxx timer started for 30 seconds * dot11_auth_dot1x_run_rfsm: Executing Action(CLIENT_WAIT,TIMEOUT) for 0012.f078.xxxx *dot11_auth_dot1x_send_client_fail: Authentication failed for 0012.f078.xxxx *%DOT11-7-AUTH_FAILED: Station 0012.f078.xxxx Authentication failed *dot11_auth_dot1x_send_id_req_to_client: Sending identity request to 0012.f078.xxxx *dot11_auth_dot1x_send_id_req_to_client: Client 0012.f078.xxxx timer started for 30 seconds * dot11_auth_dot1x_run_rfsm: Executing Action(CLIENT_WAIT,EAP_START) for 0012.f078.xxxx * dot11_auth_dot1x_send_id_req_to_client: Sending identity request to 0012.f078.xxxx * dot11_auth_dot1x_send_id_req_to_client: Client 0012.f078.xxxx timer started for 30 seconds * dot11_auth_dot1x_run_rfsm: Executing Action(CLIENT_WAIT,CLIENT_REPLY) for 0012.f078.xxxx *dot11_auth_dot1x_send_response_to_server: Sending client 0012.f078.xxxx data to server * dot11_auth_dot1x_send_response_to_server: Started timer server_timeout 60 seconds RADIUS/ENCODE(0000001A):Orig. component type = DOT11 *RADIUS: AAA Unsupported Attr: ssid [263] 14 *RADIUS: 4D 6F 6E 6F 6E 63 6C 65 5F 53 74 65 [test] *RADIUS: AAA Unsupported Attr: interface [156] 3 RADIUS: 32 [2] RADIUS(0000001A): Storing nasport 281 in rad_db RADIUS(0000001A): Config NAS IP: 10.5.104.22 RADIUS/ENCODE(0000001A): acct_session_id: 26 RADIUS(0000001A): sending RADIUS/DECODE: parse response no app start; FAIL RADIUS/DECODE: parse response; FAIL dot11_auth_dot1x_run_rfsm: Executing Action(SERVER_WAIT,SERVER_FAIL) for 0012.f078.xxxx dot11_auth_dot1x_send_response_to_client: Forwarding serve r message to client 0012.f078.xxxx dot11_auth_dot1x_send_response_to_client: Started timer client_timeout 30 seconds *dot11_auth_dot1x_send_client_fail: Authentication failed for 0012.f078.xxxx *dot11_auth_dot1x_send_id_req_to_client: Sending identity request to 0012.f078.xxxx dot11_auth_dot1x_send_id_req_to_client: Client 0012.f078.xxxx timer started for 30 seconds