Deleting cache files allows the game to 'fix' itself in a way, and can be done as a first resort before repairing your entire game. You may also safely delete the entire onlinethumbnailcache folder, if present. You can delete everything in these folders, but not the folder themselves.

You'll also see a folder titled cache and one titled cachestr. You can delete the localthumbscache.package file in this directory. To do this, go into Documents > Electronics Arts > The Sims 4 folder. It won't damage your save game, and this has actually fixed broken CC (particularly issues with script mods) for me in the past. The game will then repair itself and basically do a fresh install of the files needed to run The Sims 4. You can do this by clicking on The Sims 4 in your library, selecting the Settings button, and then clicking on Repair Game (please note that you must not be playing the game when you select this option). While you're online, go into Origin and repair your game.rar., or any other file type, they won't work in your game! Remember, you should only see files ending in. Open up your Mods folder, and make sure you've placed the CC correctly.Look at the files listed there and you should see the content you've downloaded listed. You can also double-check that your custom content is installed by clicking on the View Custom Content button in the Options menu (go to Options > Other and click on the View Custom Content button).You should see the items you downloaded there. Click on the Filter Items tab, select Content, then tick the Custom Content button and you'll see all your custom content. If you can't find a particular item in Buy Mode (this is where your custom objects go), go into Buy Mode (by clicking on the tools icon or F2).As described above, make sure you have custom content and script mods turned on in your game.Here's a list of things to check and try when you run into problems:

However, if it doesn't show up in your game, or doesn't work for some reason, you might need to do some troubleshooting. If you've installed the CC or mod exactly as describe above, it should all work just fine.

Sims 4 how to install mods