My computer recently started getting this message and will not connect to the internet no matter what I try. I have tried unchecking the ipv6 box and restarting my PC, that did not help. I tried resetting the ipv4 and ipv6 settings back to their default, that did not help either. I need solutions. It may help to know that I did manage to get it working earlier somehow, but it got screwed when someone restarted my router. Also all of the PCs connected to this router (4 of them) have the same problem, and are connected by a wired connection.