I have just returned from visiting Italy where I got the internet from various wi fi addresses. Now on my return to England my wi fi will not connect to my router (smart phone does connect OK)saying 'this wi fi network could not be joined'. Any ideas?

Question

The Air Port fan icon on the menu bar is greyed out and when I click it to connect a message  appears ' the wi fi network could not be joined '. The wi fi is turned on both on the router and selected as on in the screen drop down. The smart phone works perfectly with the wi fi router so it must be something to do with the Mac book. It worked fine before I took it to Italy. It does work Ok using an Ethernet cable. Could it be that some Italian IP's are being stored in the laptop and the UK IP is not being recognised? Any ideas on what could be done? Any advice would be appreciated. Thanks !

Answer 1

Hi  Here is part of the report which I've now pasted in . .
# --- Check Connectivity
05/30/14 16:16:38.8480           WiFi: WiFi interface is associated . . . fail
# --- Wi-Fi Interface
          Interface Name                    : en1
          MAC Address                    : 5c:96:9d:7c:a6:39
          Network Name                    : (null)
          Active PHY Mode                    : None
          Security                    : (null)
          SSID                    : (null)
          BSSID                    : (null)
          Country                    : GB
          RSSI                    : 0 dBm
          Noise                    : 0 dBm
          Rate                    : 0 Mbps
          Channel                    : 1
          Channel Width                    : 20MHz
# --- Bluetooth
          Power State                    : On
          Paired Devices                    : 0
# --- Wireless Environment
          2.4 GHz Networks          : 2
          5 GHz Networks                    : 0
          Current Channel Networks          : 1
          Recommended 2.4GHz Channels          : [ 6 2 3 4 5 7 8 9 10 12 13 ] 1
          Recommended 5GHz Channels          : [ 36 40 44 48 ]
# --- Network Configuration
          Primary IPv4 Interface          : None
          IPv4 Address                    : None
          IPv4 Router                    : None
          Primary IPv6 Interface          : None
          IPv6 Address                    : None
          IPv6 Router                    : None
# --- Debug Log Entries
05/30/14 16:16:38.9330           SMTP port is blocked
# --- Environment Test Cases
# --- Environment Summary
# --- Configuration Test Cases
05/30/14 16:16:38.9500 Wi-Fi interface is off, will not run configuration tests
# --- Configuration Summary
# --- Additional Information
05/30/14 16:16:45.1300
# --- Router Information
05/30/14 16:16:46.0980
# --- Create Diagnostics Report
Failed to collect system profiler report