[X2Go-User] Unable to create SSH tunnel for X2Go session (NX) startup, error binding localhost

[Kalle Tuulos]

Hello

We are using X2Go client (4.1.2.2) in Windows 10 and 11 computers to
contact Ubuntu 20.04 server (4.1.0.6-0~2023081).

Some users get sometimes following error when launching session:
Unable to create SSH tunnel for X2Go session (NX) startup:
Error binding localhost:<port>

I can't find any place where I could change the port number. Restarting
client Windows computer does not help, restarting x2goserver.service in
Ubuntu server does not help either.

I have noticed that this error does not appear if x2goclient (4.1.2.4)
installed on Windows computer's WSL (Ubuntu 20.04) is started. However,
using X2go client through WSL is not good solution here as one can't share
Windows directory through that.

How should I proceed? Would it be possible to get 4.1.2.4 version to MS
Windows also?

BR,
   Kalle
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