We have a Windows 2003 Enterprise Server that is a file server that only a few users can access on a Windows network. We have not made any changes or update to it but all of the sudden users cannot access it or ping to it. A few users still can...There are no errors in Event Viewer or in Device Manager. We have tried a different NIC, Ethernet cable and port on different switches. No other servers are having an issue. The server has been rebooted but still the same issue. Any assistance offered would be greatly appreciated.