"Permissions error" Sims 4 won't install
The Sims 4 won't install on my laptop anymore due to a "Permissions error". Normally, I'd install the game on an external drive since my laptop doesn't have enough space. I've done this before and the game would always work, but it seemed to start when I tried installing "For Rent" and it would always stop at 50% with a pop up saying there was trouble installing. So I left it and when I came back a few weeks later the game was asking for an update, so I clicked the update icon and then I got this pop up saying that it needs permission and to "check your security permissions", or along those lines.
I tried uninstalling the game and reinstalling it hoping that would fix the issue but now it won't install at all and keeps asking for permissions.
I tried opening the EA app in administration mode but that didn't seem to work and had a look at my external drive properties to see if anything had changed, but it looks the same to me.
I have all the packs for the game, and mods have been removed. It has the same issue with or without them.
Any help would be massively appreciated.