Sims 4 won't go online

love1D303 ensure that your Firewall and/or Antivirus are not blocking the connection. The easiest way would be adding an exception for the Origin Client,
You need to do this> add firewall/antivirus exceptions for Origin and open the needed ports http://help.ea.com/en/article/connection-issues-with-origin/#1

Make sure you are the administrator, run the setup file Origin with Admin rights http://help.ea.com/en/article/how-do-i-run-a-program-or-a-game-as-an-administrator/#2