Sacred Haven of Debauchery

At work, on a licensed Windows 7, the updater complains that "It seems you have become a victim of software counterfeiting." And the wallpaper turned black. And why is that? Because tying license verification to the Internet in general is a bad idea, and setting up various proxies on the local network that filter everything according to an unclear algorithm (including connecting to Microsoft servers) is also not a good idea.