Re: EA/Origin App missing and Game Will Not Launch
@Peaches327 The most common reason this would happen is an overly aggressive antivirus. So if you have a third-party program installed, look for recent actions involving the EA App. The App doesn't uninstall itself on its own.
For now, just reinstall the App. If you get a message saying it's already installed, choose the option to repair. Then try to play Sims 4.
If that doesn't work, uninstall the App with Revo Uninstaller (the free version is fine), download a fresh copy of the installer, and use that.