THE FOLLOWING WORKS ON windows 7 x64, I JUST DID IT MYSELF. IF YOU FOLLOW THIS STEP BY STEP, I GUARANTEE YOUR PROBLEM WILL BE SOLVED.
Make sure the following services are started:
Base filtering Engine (THIS IS THE ONE THAT GETS TURNED OFF SOME HOW THAT CAUSES THE PROBLEM),
Network Location Awareness
Windows Management Instrumentation
Remote Access Connection Manager
Remote Access Auto Connection Manager,
Remote Procedure Call
Once all of these services are started, PLEASE PLEASE PLEASE MAKE SURE BASE FILTERING ENGINE IS ENABLED, I CANNOT STRESS THIS
Once all of these are started... Enable windows firewall.
Robert F, MCSE