Hi imn,
%PROGRAMDATA%/NoMachine/var/log path is valid for logs obtained on server side, as it is explained in the article “How to gather debug logs for support requests” (https://www.nomachine.com/AR07K00677), section “How to gather server side logs”.
If you want to help us with debugging this issue, you have to follow the procedure explained in the “How to gather client side logs” section of the same article on the computer on which you installed NoMachine Enterprise Client and the procedure of “How to gather client side logs” on the server where you are connecting.
Please send us the logs to issues[at]nomachine[dot]com, and make sure you reference your topic title.
Thank you.