In some cases i.e support and other troubleshooting issues you have to temporary disable or allow all traffic through Windows Firewall.
1. Open regedit.exe and browse to
HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\WindowsFirewall\DomainProfile
(This key does not exist if there is no AD-policy affecting your machine)
2. Change the DWORD “DefaultInboundAction” to “0”.
3. Restart the Windows Firewall service.
4. This setting will remain until next policy update.