I followed instructions in this thread:
"Server Management Console > Advanced Management > Group Policy I need to stop the group policies from forcing Windows Firewall on.
Management > Forest: YourDomain.local > Domains > YourDomain.local > Group Policy Objects.
...right click > GPO Status > All Settings Disabled.
You must then force the GP's to refresh on each workstation... by opening a command prompt on the server, and entering this:
You'll be prompted to log off, which you should do, and then any user that is currently logged into a workstation must log out and back in for the settings to take effect."
Unfortunately, nothing has changed. Can anyone tell me what I have done wrong?