First, go to Start > Control Panel > System and Security > Windows Firewall > Allow a program through Windows Firewall and click Allow another program button. Use the Browse option to navigate to the installation directory, select the executable file and press Add. After that, go to Windows Firewall, press Advanced Settings and select Inbound Rules. Click New Rule from the right, check the Port box, click Next, select All local ports and then press Next again. Check the Allow the connection box, press Next twice and follow the instructions. Also, make sure that your security program doesn't block the connection.