I recently did windows updates and it installed an update for a 'Realtek PCIe GBE Family Controller'. I also uninstalled Hyper-V. Ever since then, my server is connected but its showing the network adapter with a red x. When I open cmd and installed Hyper-V with servermangecmd, it all of a sudden starts to work. Hyper-V is already installed and I keep installing it over and over and that fixes the issue. I can't even open up the network sharing center until I use the install hyperv command. Any ideas?