Did you use cmd with elevated admin privileges? Try right click cmd and run as admin if you don't know what I'm talking about. Windoze stopped running cmd with elevated privileges sometime around Win7. From a security perspective it makes a lot of sense to do that as default, even though it can be a bit of a pain for home users that expect to have admin for everything they do.

Disabling and enabling a network adapter using a GUI is trivial on most Linux desktops. So not helping Microsoft's case.