NoMachine server on Mac not found by client Windows machine until relaunch

Forum / NoMachine for Mac / NoMachine server on Mac not found by client Windows machine until relaunch

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    I have two Macbook pros running Big Sur. One is an older 2014 model which has the problem.

    I have NoMachine running on the Mac. The server is started. The Mac can see the other two computers on the local network.

    The Windows machine can only see the newer Mac, until I restart NoMachine on the older Mac, then the older Mac shows up to the Windows computer.

    When I restart NoMachine on the Mac things work fine, until some later point – usually correlated with fully disconnecting from the older Mac, and letting the older Mac go to sleep / close the lid. At this point, neither the newer Mac nor the Windows machine see the older Mac.

    Also I think it would be very helpful to have a “refresh” button on both the client view of NoMachine as well as some sort of quick refresh button on server NoMachine. Having to open the older Mac, go into status, click “restart the server”, type in root password, and click a dialog box, is a lot of steps to go through to make the machine show up on the network again.

    Until a refresh button is available, Is there anything I can do to debug this behavior?


    Hi blandy,

    We need more information to help you; can you please send us a set of logs from the Mac to forum[at]nomachine[dot]com, making sure to reference the topic in subject.

    The procedure to collect NoMachine logs is explained here, if needed:



    Just to clarify that we need the logs from the problematic “older Mac”. We didn’t receive anything so far.

    Regarding the request for a refresh button (of what, discovery?) On the player side, the “discovery” of other NoMachine hosts on the network is a process that is always on, in the background, so a refresh button would add very little benefit in terms of time that it currently takes to discover the other NoMachine computers on LAN.

    On the server side, you can access the server from !M icon in the system tray. ‘Show server status’ and then “Restart the server”. It’s 2 or 3 clicks. What was your request for “refresh” referring to?

    What we need to do is understand why the “old Mac” is no longer publishing itself on the LAN.


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