It's a firewall issue for sure! I narrowed it down. And, it's a group policy issue! The firewall is being controlled by group policy. Will someone help me learn the minimum firewall for a domain PC? That is for sure what it is! I could always disable the firewall again, but that's not the preferred solution. The preferred solution would be to configure a minimum firewall for a domain. Then, as needed, keep adjusting it. It's really more secure on both server and client to have a firewall. It blocks a lot of bad traffic. However, right now, if enabled, it's blocking perfectly valid traffic, that should go through. So far, since it's harder on the server, I have it disabled. Should I just do so with the client machine too? I don't really want to, but I will, if I have to.