I recently uninstalled AVG Software & intalled Fix-it Utilities 11 Professional. The problem I am having is to get Windows 7 Firewall back in operation. When I try to turn back on the Firewall I get the message. Windows Firewall can't change some of your settings. Error code 0x80070422. Does anyone know what this error code means & how can I get the Windows Firewall back in operation.