I have a network with three computers. Suddenly, they cannot communicate with one another. A new laptop, running Norton's can see the and communicate with the other two, seeing the devices by their computer names. The two devices, both running Avast, see the IP addresses of the other in the network scan but apparently not as computers. One lists the device as EliteGroups while being seen by its counterpart as Azureware. I am supposing that is the reason they will not connect to one another. Any suggestions?