I have a Windows 7 computer that can login to our domain with no problem. It gets authenticated, can access software on our File Server, has access to the internet, receives email via our Exchange Server, etc. In short, all the capabilities you'd expect.
What I have noticed in trying a few other networking tasks is that this computer cannot "ping" any other computer's IP address. I cannot "map" a drive to any other computer in the domain.
My specific problem right now is connecting this computer to a "shared" printer attached to another computer (via a USB cable). I've shared the printer on the "host" pc. On the problem PC, I'm attempting to connect to: \\[Host PC Name]\[Printer ShareName]. The problem PC churns for a couple of minutes, but returns with the prompt that the Host PC cannot be found. I've also substituted the IP address for the Host PC, so that the path becomes: \\10.18.xx.xxx\Printer ShareName. This doesn't work either. A ping from the problem PC to 10.18.xx.xxx results in "Request Timed Out" for all 4 pings.
Also, I cannot reach this problem PC remotely using either Ultra VNC or Remote Desktop. This dictates that I must travel to this office in order to do support work - a real problem.