This is a bit frustrating - It seems that NoMachine is 'hit and miss' being being able to receive a connection. Searching for a device that is online find none, and the device shows running. Restarting the service may fix it, but many times doesn't seem too, and restarting the computer leaves the same issue - not found.
Some threads suggest re-installing it - which I will do, but seems like a poor fix on a service that should run on boot.
It's it just my aggravation is causing this or am I looking for something else?
That's why I never ended up using NoMachine. Too many issues like that.
And it's not free for commercial use - at least the last time I looked.