My sims 4 wont open

@476mzdc0jsqa  What happens when you try to repair the game?  If you get an error, please post a screenshot.  And please try restarting your computer just before repairing as well.

I understand you want to play with mods, but I'd also like to know whether you can open the game with no mods present at all, just as a test.  So please move the entire Mods folder to the desktop and delete localthumbcache.package, then try to launch it and let me know how it goes.

Thank you for your reply, (and sory for my late one, i cant click on the repair button or origin its sort of dulled out, my game works without mods and with mods in there folder but disabled.

@476mzdc0jsqa  The Repair button should be grayed out if you're actually playing, but not otherwise.  If you can't click it even when Sims 4 isn't running, and restarting your computer doesn't help, try clearing Origin's cache:

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

But since your issue goes away with no mods present, it's pretty clear that's the cause.  You'll need to test the mods you have to find out which ones are broken.  If you have a lot of them, the 50/50 method can make the process much more efficient.

https://modthesims.info/wiki.php?title=Game_Help:Finding_Problem_Custom_Content#The_50.25_Method

Thank you my sims is currantly repairing, via origin, i dont think ill need to do the 50/50 mehod since when i open sims it come up with an error telling me exactly what file isnt working, but as many times a si try to remove said file it chooses a new one after?

this is what is says if i have any mod in my mods folder.

@476mzdc0jsqa  Did you move your existing Mods folder back, or are you still working with the new one the game generated?  Please keep using the new Mods folder, or if you've deleted it, let the game create another new one.

Download one mod known to be compatible with the current patch level (1.90) and add that to the otherwise empty new Mods folder, then see whether you get the same error.  If you don't, you can try adding one of your other mods or cc items to the new folder.  If the error shows up again, the problem is that file, and you'll need to look for an update or just stop using it.

i got rid of all my mods and put 2 new ones in to see if it worked and it did, but once i downloaded more it stopped working it dosnt matter what mods it is its the amount i think?

@476mzdc0jsqa  Do you use OneDrive, and if so, is it full or close to it?  Please also post a screenshot of the Mods folder with the new mods in it: I'd like to see if there's an obvious syncing issue with the newly-downloaded files.

i thought it was to do with one drive too but i uninstalled it and its still now working, so i reinstalled it

@476mzdc0jsqa  When you add back a cc item and the game stops working, are you sure that cc item works on its own?  Is it possible that item conflicts with another cc item you've already added?  The way to test is to try different combinations of items that you've already confirmed work alone.