Re: Sims 4 Damaged/Missing Files Error
@sf8o4rl761cp If you use a third-party antivirus, please disable it, then repair the game through Steam: open your game library, right-click the Sims 4 game tile, and select Properties > Local files > Verify integrity of the game files.
If that doesn't help, or you don't use an outside antivirus, please uninstall Sims 4 from Steam and reinstall it into a different location. Create a folder on the root level of the drive of your choice, for example C:\Games is fine, but not C:\Program Files\Games. Create a new Steam library there, as described in this article:
https://help.steampowered.com/en/faqs/view/4BD4-4528-6B2E-8327#default
If you prefer, you can move the existing install to the new folder first, also described in the article. This is less reliable than downloading a fresh copy but also faster; if it doesn't work, go with the fresh download.
If that doesn't help, please run a dxdiag and attach it to a post.
https://help.ea.com/en-us/help/pc/how-to-gather-dxdiag-information/
Please also let me know which drive you've been installing Sims 4 to if you have more than one.