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In our college, we have PEAP authentication system for LAN Authentication. With the new Ubuntu update to 16.04, the PEAP Authentication asks for the password again and again and doesn't connect. It used to work perfectly in Ubuntu 14.04. Any suggestions?

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Please use nmcli to add the password.

  1. Edit /etc/NetworkManager/system-connections/CONNECTION_NAME:

    [connection]
    id=CONNECTION_NAME
    
    [802-1x]
    password=YOUR_8021X_PASSWORD
    
  2. Restart your network

    systemctl restart NetworkManager
    
  3. You may need to bring the interface down and up to test the new changes:

    nmcli con down CONNECTION_NAME
    nmcli con up CONNECTION_NAME
    

All the thanks are for this source.

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