Re: How do I stop Sims 4 packs from auto reinstalling?

@GothicGhoste  Go into the EA App settings and disable the option for automatic game updates.  You'll still need to manually cancel each pack's download once, but hopefully only once... or maybe once after each patch.  This was a problem in Origin and is still a problem in the App, unfortunately.

If this doesn't help, there's a more drastic option you can try, somewhat at your own risk.  (The worst thing that could happen is you'd need to reinstall Sims 4.)  Inside the game's program files, where pack folders would normally be deposited, you could create an empty folder for each pack you own, named the same way the App would.  This may convince the App that the packs are already installed.

If that doesn't work, create a text file, not a folder, similarly named, and when you save it, strip the .txt extension off it, so for example you'd have text files called EP01, GP05, etc.  The App won't be able to create folders with these same names in this location and therefore won't be able to install your missing packs.

Again though, this may bork your install, so only try it if you really need the space and are willing to reinstall if necessary.