Hi @Bilbotine, thank you for your reply.
I think I wrote it wrong.
I can install the NX software, but I cannot start it, or better, I can for a few seconds, than it stops.
I could not find any logging on the event viewer, or a log file to explain what is happening.
From what I read may be related to the NX user, but as I said in the description, I need a procedure on how to correctly install it.
The server is a Windows 2019 Essentials.
NX is the latest available.
Regards.
JG