I have installed NoMachine Enterprise Desktop for evaluation in Ubuntu Desktop 18.10, after installation (debian packages), from GUI, I see that the HTTP service network (4080) and HTTPS didnt start (I was unable to access the desktop from client browser).
Trying to start the service manually, from GUI (didnt start), I saw the following error in /usr/NX/var/log/nxserver.log: ‘NX> 500 ERROR: Support for HTTP server is not permitted on this server. Googling in this forum, I found that ClientConnectionMethods entry in the /var/NX/etc/server.cfg had to be modified to NX,SSH,HTTP.
After doing this change, I receive the following error when again, I tried to start http service from GUI in the nxserver.log: ‘NX> 500 ERROR: Cannot start service: nxhtd.’.
I send in attach the nxserver.log (the part of this file when I tryied to start manually the service http from GUI)
Is it possible that you installed NoMachine Enterprise Desktop on the machine where your previously had NoMachine free installed? During installation the new package doesn’t overwrite old config and license files, so please try uninstalling NoMachine and removing the whole /usr/NX directory. Then install NoMachine Enterprise Desktop again.