Error code 16 after new windows 11 update.

I have taken about 20 minutes reading this thread after having the same issues. Is it ok if someone gathers all the things we need to do to make it work into one, I would be most grateful. It seems very complicated and I would also like to please request from the people who have messed around with their property settings let me know what ones work best to make that stupid error not appear. I have had it appear for a week after adding all expansion packs + mods too my game. Before that, I had no problem. I have a windows 11 on a new laptop. Before his laptop, I had another windows 11 laptop. On that laptop, I could play sims 3 with no problem, but I never updated it. I might need more specific instructions regarding the windows security thing but I don't think that is the problem. I use the lazy duchess smooth patch (not sure what one but shouldn't really matter) all NRAAS mods and some mods that fix minor problems in the game. I would love to help out but not sure how. I wish I could just play sims 3 in peace. 

Edit 1: I forgot to mention I got the EA app and had major problems with downloading the sims 3. I then found a download for origin and I had no luck. I managed to eventually download everything on the EA app after a lot of fiddling with it. From trying to download on origin, it wouldn't let me download any packs. There was no packs and stuff button. I am thinking EA is definitely trying to get rid of sims 3.