Hi, about your question concerning the icons, I’ll answer what I wrote in a similar topic (https://forum.nomachine.com/topic/explain-machines-icons-please) 🙂
The pipe icon, in your image it’s the first icon (located through local discovery), represents computers which are found on the same LAN. You can turn this off if you don’t want your server machines to advertize themselves on the LAN. See more about this here:
https://www.nomachine.com/finding-other-nomachine-computers-on-the-same-network
You can also turn off LAN computers from being shown in your local Player if you want as well, this is also explained in the above tutorial. It has a label (in the edit panel) which explains what it is: “Located through local discovery service”.
The other icon (!M) represents an nxs file, i.e a connection you created manually. It shows when you create a connection to a computer. This connection file can also be from previous installations as it is stored in the .nx/cache folder. Unlike LAN-discovered machines, connections can be deleted. If you want to delete the LAN-discovered machine, disable the service as I described earlier.
Instead, about the icon that you say is “not working” and specifically “no mouse response on guest”, please provide the exact steps to reproduce and additionally:
– are you connecting to a physical or virtual display?
– what desktop environment are you connecting to (Mate, XFCE, something else)?