Hello @James thank you for offering your help. To make sure I give you log files from clean systems I reinstalled linux os from scratch. But now the "worst case" for you as support happened: it works fine. I call it the worst case for you because I couldn´t give you the opportunity to analyse your software under unconventional conditions. Sorry for that and also thank you again for being there.

Hello everyone, my problem seems to be pretty similar to the one from Олег Белобров I use blender blender 2.8 with cr 0.1.8 on a Windows 7 PC and a Linux machine. (not headless, just a plain mint xfce for testing) I can connect, sync and render flawlessly from Linux machine with the remote Win 7 machine connected. But the other way around from Win 7 PC connected to Linux machine even syncing fails. After Resync attempt it states "exited". In my case I tried to keep it as simple as possible and connected the machines with only a network cable and static ip addresses.