Hello,
When I setup my Windows 8.1 Guest on VMWare Fusion 7.1 with NAT Networking, I consistently get HTTP 400 errors (Invalid Verb) when browsing the web. Not all sites produce the error, but particularly Microsoft sites such as http://msdn.microsoft.com (and other Microsoft properties). I suspect it must be related to IIS Web servers but don't know that for sure. When I switch the networking to Bridged, the problems go away. Is there any configuration changes that will allow me to use NAT networking?