June 2022
so i downloaded and bought the sims 4 on steam and i know i still need origin to run the game but every time i download it and try to open it, it says “This application failed to start because it could not find or load the Qt platform plugin “windows” in C:\Program Files (x86)\Origin” “Reinstalling the application may fix this problem”. OK i deleted it and downloaded it again about 50 times and it still pops up this. what do i do?
June 2022
@beomgyu800 Please try running both Steam and Origin as an admin: right-click on each shortcut and select "Run as administrator." Only try launching Sims 4 once both apps are open.
If this doesn't help, or if you can't open Origin, please clear its cache and uninstall it "the hard way":
https://help.ea.com/en/help/faq/clear-cache-to-fix-problems-with-your-games/
https://help.ea.com/en/help/origin/origin/manually-uninstalling-origin/
Download the full installer (direct download link):
http://download.dm.origin.com/origin/live/OriginSetup.exe
and run it as an admin as well. Then open Origin and Steam as an admin and again try to play.