Hello Scool,
We failed to reproduce the issue described by you. However, similar behavior occurs when either username
or domainname are misspelled.
NoMachine supports 2 formats of domain usernames:
1. <domain>\<username>
2. <username>@<domain>
Please, make sure that credentials provided by you are valid.
If the problem persists, gather logs, following the instructions described here:
https://www.nomachine.com/AR07K00677
and send them to forum[at]nomachine[dot]com referencing your topic.