Not enough disk space

[[UGFP]Karlathian]

I have been looking on forums both steam and elsewhere, google searching, and trying different ways to install but I always get the same message both for this game and A:FoS. It tells me I don't have enough disk space though I know I do, I have 406 GB free of 465 GB which is plenty of space. I also meet most of the recommened specs for my pc on both games. So my question is how do I fix the issue I'm having?