Mobaxterm: Ctrl key seems locked

Question

I use mobaxterm to connect from windows to a vncserver session on linux.

I works fine for some time, but then Ctrl key seems to be locked. Thus normal typing become impossible, e.g. typing q sends instead Ctrl-q. (After reconnecting to the same session, it works a again, for a while).

Is there a fix to unlock Ctrl or even prevent this behaviour?

Answer 1

I found that pressing the Ctrl+Alt+Del button with the mouse stops locking the ctrl key.

Then one has to cancel the request to exit the session. This is at least more convenient than making a reconnection to the vnc session.