I noticed that X2Go Client ships an old version of VcXsrv, according to the details of %programfiles%\x2goclient\VcXsrv\vcxsrv.exe it is version 1.17.0.0

I downloaded the most recent version (1.18.3.0) from: https://sourceforge.net/projects/vcxsrv/files/vcxsrv and installed it on Windows 7.

Then I reconfigured X2Go client: X2Go Client -- Options -- Settings... -- X.Org Server settings: |x| use custom X-Server

The default values of: executable: C:\program files\vcxsrv\vcxsrv.exe command line options: -multiwindow -notrayicon -clipboard worked out just fine for me with nmrDraw.

For reference: In case you misconfigure X2Go Client X.Org server and the message window: x2goclient

Can't start X.Org Server. Please check your installation. [OK]

prevents you from changing the settings, revert them using 'regedit'. In the path: HKEY_CURRENT_USER\Software\Obviously Nice\x2goclient\settings set "useintx"="true"

Kind regards, René