Duplicate Wifi, Wifi won’t connect
Sometimes Macs have trouble when you have duplicate wifi entries in your network settings. Fix it like this…
1.Disconnect from your current network by opening terminal and copying this command:
sudo/System/Library/PrivateFrameworks/Apple80211.framework/V*/A/R*/airport -z
2. Go to System Preferences → Network → Wi-Fi → Advanced… and remove the network from the list of preferred networks.
