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One Windows PC Sees A Linux PC, The Other Doesn't

a_unique_name 401 Reputation points
2024-06-11T07:25:09.3266667+00:00

Hello Folks:

PCs mentioned are running Windows 10.

A couple of months ago I found that I could no longer connect from one Windows PC to my Linux PC. Ping would no longer work.

They were working fine for about half a year before that.

Another Windows PC can ping the Linux PC.

The Linux PC can ping both Windows PCs.

The Windows PCs can ping each other.

The Windows and Linux PCs that don't communicate are wire connected to the same Ziply Fiber switch / router and both communicate with the Internet without problems.

The second Windows PC, that does communicate with the Linux PC is connected to the router through a switch.

Suggestions?

Thanks
Larry

Windows 10
Windows 10
A Microsoft operating system that runs on personal computers and tablets.
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  1. S.Sengupta 16,691 Reputation points MVP
    2024-06-18T01:52:13.1433333+00:00

    Suggestions:

    Ensure that both PCs and the Linux machine are on the same network and subnet.

    Make sure File and Printer Sharing is enabled and Firewall is not blocking any.

    Ensure there are no IP address conflicts on the network.

    Reset the network adapter settings on the Windows PC.

    Update Network Driver.

    Temporarily disable any VPN, third-party firewall, or antivirus software on the Windows PC and see if the issue persists.

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  2. Wesley Li 6,190 Reputation points
    2024-06-21T15:36:42.35+00:00

    Hello,

    Here are a few possible steps and suggestions for solving your problem:

    Firewall Settings:

    First check your Windows 10 computer's firewall Settings to make sure it allows ICMP traffic (that is, allows ping).

    Also check your Linux computer's firewall Settings to make sure it allows ICMP requests from Windows 10 computers.

    Network configuration:

    Verify that the IP addresses, subnet masks, and default gateways are set correctly for Windows 10 and Linux computers.

    Make sure both computers are on the same subnet.

    ARP cache:

    Run the arp -a command on a Windows 10 computer to check the ARP cache and ensure that the MAC address of the Linux computer is correctly associated with the IP address.

    To try restarting the network adapter:

    Disable and re-enable the network adapter on your Windows 10 computer, sometimes a simple reboot can resolve temporary network issues.

    Check the physical connection:

    Check that the network cable between the Windows 10 computer and the router is properly connected and not damaged.

    Restart Router/switch:

    Try restarting your router or switch to resolve possible temporary network issues.

    To view system logs:

    Check the system logs of your Windows 10 and Linux computers for errors or warnings related to your network connection.

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