Hi tommas,
so the relevant logs were probably cleaned up. At this point we would need a new set of logs after setting the ‘SessionLogClean 0’ key to the node.cfg file. Detailed instructions on how to gather a complete set of logs can be found here: https://www.nomachine.com/AR07K00677.
Anyway, before proceeding with new logs, I would recommend to upgrade to the new 4.4.1 version, that contains fixes to several problems, also affecting the Windows server.