Market doesn't update/install apps, error 0x80070005

Any apps I try and update attempt to install, but stay at 0.0mb downloaded, then it stops and produces this error:
The happens with every app.

I read on some other forums on why this may be happening and someone suggested that it was because I had changed the permissions to the WindowsApps (C:\Program Files\WindowsApps) folder so that I could view the files within it.
Yes, I did try and change the permissions so I could edit the files within (I couldn't), just for fun and to see if it'd make any differences, so that is what I assume the problem is.

After learning this I tried to reset the permissions, I have no idea how to, so I tried to replicate the permissions from a clean unaltered WindowsApps folder and it didn't work, no matter what I did. Windows Update doesn't even seem to fix it either.

So is there any way other than reinstalling windows to get the App Store working again?

I have the same issue on this stuff. I got myself in stuck since I uninstalled some application from store.

F*** Win 10 Store and its app!