The default setting of the Windows Firewall should not allow the program to interfere with your updates. To restore the defaults go to
Start - control Panel - System and Security - Windows Firewall - Restore default
When I got a new computer 2 years, I installed Windows Vista and Windows Firewall stopped any Windows Updates and I had to disable the Firewall to allow the updates to download and install.
I have now installed Windows7 but I have the same problem.
Do any of our members have a solution to this problem?