Go up to see a general description of connection status of Windows Servers.
Most likely this device is down. Double click on the device to see node status. If NC thinks it's down, try sending a simple ping [IP address] request and see the status of this host.
You may also try to delete this node and readd in NetCrunch. Click on menu Actions->Monitoring->Monitor New Node and type the IP address.
Check if you have any limits imposed on these local or remote IP networks. Click View-->Monitoring Statistics.
Also see if you can connect to this node via perfmon.
