Re: Sims 4 not launching.
@siggym Please disable Omen Gaming Hub and anything with a related name before trying to play. Go through the Task Manager's background processes list to make sure nothing is still running, and when in doubt, kill the service. If you accidentally end the wrong process and it doesn't restart on its own, just reboot your computer.
If that doesn't help, try playing in a clean boot, again going through the Task Manager looking for any stray services that shouldn't still be running.