Wi-Fi problem

[mancini]

My Samsung smartphone shows "Authentication Required" message when I try to connect the Wi-Fi network. I have saved Wi-Fi password and Wi-Fi network is also working fine. I tried using "forget password" option, but no use. how to solve this problem?

[Sebastin]

Don't know may be that is a glitch.
Try resetting your router and install default settings.
this is not the issue of your phone, this once happened with me too and after doing this it worked.