Is there a known solution for this? I have the exact same problem using the latest distribution of X2go for windows in combination with open VPN. I tried already several versions of X2go but the problem persists. The configuration I am using works perfectly in macOS.

x2go-DEBUG-../src/onmainwindow.cpp:9910> WARNING: gethostbyaddr failed: 11004

x2go-DEBUG-../src/onmainwindow.cpp:10961> Failed to start user mode OpenSSH server.