So has Microsoft broken UDP Encapsulation in Windows 8? 

This workaround that thousands of people have had to use since Windows XP now no longer appears to be working at all: 

http://support.microsoft.com/kb/926179

It just gets ignored as if it wasn't set. I cannot tell if they have just moved it (again) as there is no support article on it (yet?).   

If they have broken it for real then their business users are going to be calling up a LOT.