Can't delete or move WoW folder

Hi guys,

I want to share my WoW folder with a friend of mine because his internet connection is very slow.
My problem is that I can't move all folder to my external disk. I tried to remove the writing protection but it seems like is doesn't work.
I figured out that the "C:\Users\username_\Documents\001_Spiele\Wrath of the Lich King 3.3.5a (wod models)\Data\enUS\Documentation "
folder will not be editable.

Is there any possibility to change or delete this folder?

Have you tried to reboot your computer?

Follow these steps:
1) Restart your PC
2) close your Torrent client and move your WoW folder away from your Torrent's download destination
3) now right click on WoW folder> Properties> remove "read-only"