Can't connect to my home wifi because an authentication problem

[Basantwael]

Every time i try to connect to my home wifi it says authentication problem .. Although i'm sure that the password is correct . How can i fix that ?

 

[BadAsAl]

I would delete the wireless connection from your laptop and set it up again. If that doesn't work then turn off encryption on the router and try to connect. If you can then you know it is an encryption issue. You are then going to have to try different encryption settings and passwords to see if you can get connection with encryption enabled.