I have seen this issue on a variety of Microsoft Operating System's however have not found my answer up till now following I reboot, I have to open "Advanced TCP/IP Settings" as well as add the default gateway. It workings until I reboot as well as disappears. Why is not the default gateway conserved across reboots, why has it persevere so long, what do I have to perform to solve it, if anybody has any thoughts? It now happen to me to add that I am jusing static IP, not DHCP, that is not a choice. One time I set the default gateway, I have no issue for days until I reboot, and after that I have to dig down to set it another time.