I haven't found a permanent solution, but a temporary one you can do a lot quicker than uninstalling/reinstalling EA each time is to use EA App Recovery. If you're on a PC, go to the start menu and scroll until you find the EA drop-down menu, then right-click on App Recovery. Run as an administrator, agree to everything, and it'll prompt you to log back into EA. This should open the app and let you launch any games. Like I said, though, I have to do this each time I want to run Sims 4, but it takes a couple of minutes at maximum.