I am running Windows 2003 server with a public IP. After performing the most recent Windows update and rebooting I am no longer able to RDP to it either via the internal or external IPs. I can't Telnet to it either. (Error: "Could not open connection to the remote host on port 3389: Connect Failed") I can Telnet on port 25. This is a Windows 2003 Server running Exchange. I have another Win2k3 server connected physically the exact same way and I am able to RDP to it. I haven't run the updates b/c I'm now afraid to. I have checked canyouseeme.org and it says that port 3389 is blocked. It hasn't been blocked in the past. I was using it to run the Windows updates that caused me to lose connectivity. I don't see anywhere obvious that the port is blocked. It is not blocked on my firewall b/c the other devices are still accessible. It isn't blocked in the TCP/IP properties. What else can I check?