Please try to run the following command from a console on the server:
NX_ROOT=/usr/NX NX_SYSTEM=${NX_ROOT} LD_LIBRARY_PATH=${NX_ROOT}/lib:${NX_ROOT}/lib:$LD_LIBRARY_PATH bash -c ‘${NX_ROOT}/bin/nxkeygen -u’
and show us the output.
If command above doesn’t return an error, please try to fix the problem as follows.
1) Remove uuid file:
sudo rm /usr/NX/etc/uuid
2) Update the NoMachine server installation:
sudo /usr/NX/scritps/nxserver –update
Then, please send us the following file:
/usr/NX/var/log/nxupdate.log