How do I fix authentication problem

Authentication errors happen when the tablet does not have the correct credentials to log onto the network. Be sure you have the correct SSID and password to join your local network. You can check this in Settings.

Change your router to WEP. The tablet may not support WPS.

Try it with a different router. Use a friends. Your router may have to be adjusted.
Go on the manufacturers web site and see if your problem is listed.

Hi
To connect to a WiFi system, you may need 3 pieces of information:
A username
A password
An encryption key
Once you have successfully linked to a WiFi access point then your tablet will remember the settings until told to forget them.
A lot of the time you may only need the encryption key, and if the tablet detects a WiFi access point then if you tap on that in wireless settings then it will either connect automatically or ask you for some sort of code - the encryption key. If this is not entered correctly then it will return an authentication problem/error. In order to connect you have to have this code.
Cheers

Try entering password again off router. Unplug and replug router then try again. Make sure your WIFI is on too.

An authentication error is an incorrect password being entered. Make sure you are typing it in correctly. Remember, passwords are case sensitive. Please check with your internet provider if you are unsure of your Wi-Fi password.

No I connect by Ethernet cable and still want connect

• Under settings on the tablet enable the wireless radio.
• Once enabled you should get a list of available networks, select yours.
• Enter any password you have.
• If you get an authentication failed message and you know your password is correct, try disabling security on your network and try again. Some tablets have a problem with security especially those running ICS.

Can't get unit to connect to my home wifi , keeps giving message Authentication Problem