COMMUNICATION BETWEEN COMPUTERS

Hello, I'd be happy to guide you through troubleshooting this network communication issue. It sounds like your main computer isn't connecting properly with the other five devices. First, please check the physical connection—ensure the main computer's network cable is securely plugged into both the computer and the router/switch, and that the link lights are active. Next, try restarting your main computer, the router, and the switch, as this often resolves temporary connectivity glitches. Once restarted, verify that the main computer is on the same IP subnet as the others; you can check this in the Network Settings. Also, temporarily disable the firewall on the main computer to see if it's blocking communication—if it is, you'll need to create an exception for file and printer sharing. For persistent issues, run the Windows Network Troubleshooter by searching for it in the Start menu. If this resolves your problem or you find another solution based on this guidance, please click "Accept Answer" to help other users in the community facing similar challenges. We appreciate you reaching out!