I managed to get everything all fixed. I still don't know exactly what was causing the issues, but I do know that the workshop was part of the problem. It wouldn't download anything I subscribed to, across all of my games.
I am having some of thesame issues as the original poster of this thread, which is being unable to connect to a modded server. I am also having what appears to be issues with the workshop. I've tried all of the things listed out here, the only diffe…