In order to fix this issue, go to Start, type Windows Firewall and open the utility. Click Allow a program through Windows Firewall and check the box next to magicJack application. If you can't see the software in the Allowed programs and features window, use the Allow another program button to navigate to magicJack installation folder. In addition, make sure that your antivirus, doesn't block the connection. If the problem persists, use the Live Chat option to get in touch with the Support Team.