Hi,
Is it possible that NoMachine was installed on a domain controller?
If so, you can check whether the user nx exists using the following commands:
net user "nx" /domain – checks if the user exists in the domain
net user "nx" – checks if the user exists locally or in the domain
If the nx user is part of the domain, please install NoMachine locally on the target servers instead of the domain controller.
Additionally, please refer to the article regarding known issues with NoMachine in Active Directory domain environments.
https://kb.nomachine.com/AR04O00925
Regards,
Klaudiusz