Sims 4 will not launch in the app

@chantenail764  Please force the EA App to update.  Go here:

C:\Program Files\Electronic Arts\EA Desktop\EA Desktop

and launch the EAUpdater.exe.  Then restart your computer.  Try to launch Sims 4 from within the EA App, not from its desktop shortcut.

I tried this but still getting this error. i have a fresh install with no mods or expansions.

@Pyquephrill  If you use a third-party antivirus, please disable it, temporarily of course.  Either way, clear the EA App's cache:

https://help.ea.com/en-us/help/faq/clear-cache-to-fix-problems-with-your-games/

and repair the game: open your App game library, click Sims 4, and select Manage > Repair.

If that doesn't help, please do a clean uninstall and reinstall of Sims 4:

• If you have saves or other content you'd like to preserve, put aside your Sims 4 folder in Documents\Electronic Arts and rename it to something that doesn't include the words "Sims 4."
• Download Revo Uninstaller (the free version is fine) from here.
• 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.

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.

Install the EA App, then create a new folder into which you'll install Sims 4.  The folder should be on the root level of the drive of your choice, for example C:\Games is fine, but not C:\Program Files\Games.

If you use a third-party antivirus, disable it before reinstalling the EA App, and don't reenable it until you've tested Sims 4 at least once.  As long as you're not doing anything else at the same time, your computer should be safe.  If this helps, you can set exceptions for TS4_x64.exe and EADesktop.exe.