Authentication Error Android Tablet

Hello, I read all of the answers here and tried all. Still cannot connect to home WiFi while all other devices connected. Getthing "Authentication Error"
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More about authentication error android tablet
  1. Authentication error means that the password is wrong. Are you sure that your using the same password that was used for the other devices to get on to your wireless network ?

    To verify go to a computer that is currently connected to the network and go to the control panel and select Network and Internet, then next select Homegroup, then next select View and Print the network password. The next page will have the network password.
  2. I have done that too & still does not work.
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