I have installed latest nightly build (4.1.2.3) that you provided, the connection to the server failed,
Here is the debug output to the command:
x2go-INFO-1> "Starting X2Go Client 4.1.2.3..." x2go-WARNING-1> English language requested, not loading translator. x2go-WARNING-1> English language requested, not loading translator. [...] x2go-INFO-8> "Starting connection to server: dcilda927:22" x2go-DEBUG-../src/onmainwindow.cpp:2931> Starting new ssh connection to server:"dcilda927":"22" krbLogin: false x2go-DEBUG-../src/sshmasterconnection.cpp:168> SshMasterConnection, host "dcilda927"; port 22; user "e171950"; useproxy false; proxyserver ""; proxyport 22 x2go-DEBUG-../src/sshmasterconnection.cpp:248> Starting SSH connection without Kerberos authentication. x2go-DEBUG-../src/sshmasterconnection.cpp:250> SshMasterConnection, instance SshMasterConnection(0x3cf9ad8) created. x2go-DEBUG-../src/sshmasterconnection.cpp:492> SshMasterConnection, instance SshMasterConnection(0x3cf9ad8) entering thread. x2go-DEBUG-../src/sshmasterconnection.cpp:573> Setting SSH directory to C:/Users/teiny171950/ssh x2go-DEBUG-../src/sshmasterconnection.cpp:795> Session port before config file parse: 22 x2go-DEBUG-../src/sshmasterconnection.cpp:805> Session port after config file parse: 22 x2go-DEBUG-../src/sshmasterconnection.cpp:869> Session port before config file parse (part 2): 22 x2go-DEBUG-../src/sshmasterconnection.cpp:879> Session port after config file parse (part 2): 22 x2go-DEBUG-../src/sshmasterconnection.cpp:903> cserverAuth x2go-DEBUG-../src/sshmasterconnection.cpp:942> state: 1
x2go-DEBUG-../src/sshmasterconnection.cpp:674> Setting SSH directory to C:/Users/teiny171950/ssh
Unfortunately, that's not very helpful. There's no connection attempt visible (other than a really generic setup).
Stefan's call has been "wrong" in that the order of redirections do matter, and, wwith his listing, stderr-data will continue to get printed out to the console.
Rather try:
x2goclient.debug.exe --debug >%TEMP%\x2godebug.log 2>&1
instead. %TEMP%\x2godebug.log should include text after that.
Also, if possible, please make sure to wait until the connection attempt actually errors out.
Additionally, do you have a file located at "C:\Users\teiny171950\ssh\config"?
If so, what does it contain?
Mihai