To be completed by the original poster:
CMS Version
4.1.1, ubuntu 24.04LTS, docker installation
Player Type
Windows 10 Enterprise 2016 LTSB
Player Version
Tried with Windows player v308, v310 and v403
Issue
With CMS version 3 we were able so send a reboot command to the players and it was working well. Now, after the update to Version 4.1.1 it is not working anymore.
Can that be a bug in the cms?