Wifi Authentication error

[Muhammad Asim Jawaid Uppal]

I have Samsung Galaxy SII T989 T Mobile. Its not connecting on wifi as Its showing Authentication error. I have restart and even reset device but showing same error on wifi connection all other devices are working fine on this wifi connection.

 

[GeRgY]

Hi buddy,

I will be very clear with you right now:
1) Forget your wifi name from wifi (just delete the entered password and etc..)
2) Go to Settings, Apps, All, Clear data in google services framework and restart.
I am sure that will help you