Re: why are my windows rainbow?
@milanlaia Just checking, but are those cc windows, or do they come with the vanilla game? It's difficult to tell with the textures missing.
Anyway, try repairing the game in Origin: open your game library, right-click on the Sims 4 icon, and select Repair. If that doesn't help, clear Origin's cache, restart your computer, and repair again.
https://help.ea.com/en/help/faq/clear-cache-to-fix-problems-with-your-games/