Solved
Sims 4 not launching through Steam/Cannot Uninstall app version
So here's how my problem started; I decided to change the quality of the Sims models with the in-game settings, changing stuff from low to high and all that to see what my computer could handle. It w...
@BetlViolet Please download Revo Uninstaller (the free version is fine) and see whether it finds a copy of Sims 4. If so, uninstall it:
- Put aside your Sims 4 folder in Documents\Electronic Arts and rename it to something that doesn't include the words "Sims 4."
- Launch Revo, select Sims 4 from the list, and click Uninstall.
- Once the game is uninstalled, select "Moderate" under "scanning modes," and click Scan.
- Review the list, in case there's something you want to save; otherwise, click Select All, and then Delete.
- Close Revo, and restart your computer.
While you're looking, see whether you have the Sims 4 CAS Demo installed, and if so, remove it.
Uninstall the EA App with Revo as well. I don't have instructions for that at the moment, but the process should be straightforward. Restart again when you're done.
Reinstall the EA App, then install Sims 4 from Steam if that's what you'd like to use or if you own DLC within Steam. Open the EA App before trying to launch Sims 4.
