"Authentication Error Occurred" on Wi-Fi yet modem is OK!

[AC Question]

I just bought a Samsung 10.1 Note tablet off a private seller, and I'm starting to be concerned, because I can't connect to wi-fi. (Something I never though of testing!). The first time it gave me "authentication error", and I switched from WPA-PS2 to WEP, and then it worked. But then when i changed it again to try out WPA-PS1, it wouldn't work, and then it wouldn't work on WEP again either! I've tried Hard Reset, Factory Reset, the default WEP password on the router, and even after 2 dozen tries, it won't connect AT ALL to wi-fi, repeating that error.

What gives, please?! Am I borked, as in this is some sort of defect with the wifi card on these Note tablets, or is it solvable via software?

 

[B. Diddy]

Welcome to Android Central! Review this guide: http://forums.androidcentral.com/am...roubleshooting-wi-fi-connection-problems.html

 

[Skinjob]

Thanks, but there's nothing in that guide that will help here. Remember, I said my Tab4 works on the same router with the same settings.

 

[B. Diddy]

It's still worth rebooting the router, if you haven't done so already. I've had the experience before when only one device wasn't connecting, while other devices could connect fine. After a router reboot, the problem device could then connect.

 

[Skinjob]

I did reboot the router, several times, to no effect. Want to know what solved the problem? Waiting! When I tried it again the next morning, it connected! Then I switched from WEP to WPA-PS2, and it gave me "poor signal" error once again (false error), and wouldn't connect. Then I deleted the configuration, and reconnected to WPA-PS2, and it worked! I've since tested it by deleting the configuration again, turning the tablet off, restarting, redoing the WPA-PS2 config, it still connects.

Go figure.

 

[B. Diddy]

The Force is strong with this one.