In my mobile phone (CyanogenMod 11-M12, Galaxy SIII I9300), in WiFi section my WiFi SSID is shown and under its name is
Save, secured with WPA/WPA2. WiFi is ON. If I press SSID, a pop-up ask me to Cancel, Forget or Connect. and if I press Connect no connection is established!
I was connecting to this SSID without any problem before this. It seems that this problem occurred after installing "Google Apps" or after changing some privacy setting in Privacy Guard section. But I did not remember changing any system application's privacy settings, I just limited Google Apps privacy access.
I tried Factory Reset from recovery mode. It solved the problem, but after few hours of working with the device, the problem repeated. After that, Factory Reset did not solved the problem. I tried reinstalling CM from zip file. I installed CM11 zip file and did wipe (Cache, System, Internal Storage) partitions from recovery, but the problem persists. In the second try, I did wipe (Cache, System, Data, Internal Storage) partition and installed CM zip file after that. This solved the problem. But I am not sure if the problem will occur again or not?
The problem occurred after a while again, it seems that the problem occurs after installing some Google Apps!