Windows 7 64 bit "Network BIOS command limit has been reached"

I seem to always have this problem with a new machine. I don't know why Microsoft see fit to have it fail as default. I can only presume there is some security risk with it.

However as a developer linking to UNC paths, it's frustrating. Previous solutions didn't seem to work with a 64bit Windows 7 PC but this is how to solve it;

Add a REG_DWORD registry entry FCNMode and set its value to 2 to HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\ASP.NET.