Starting from version 2.1.0-17, NX Client is able to read extra proxy options from a file named options, located in the User NX directory, i.e. by default the user's home/.nx directory.

These options need to be written in the same format accepted by nxcomp, i.e. as comma separated couples of key=value.

Extra options are then appended at the end of the normal proxy option string, so that they override the previous values.

How to disable font channel by means of proxy extra options on client side

The NX session can be reconnected in the greatest number of situations, but some constraint have to be satisfied to ensure that  the session is resumed, even from a different location. One requirement is that set of fonts available on client side matches the set of fonts on server side.  To achieve this,  NX establishes, at session start-up, a temporary tunneling of a font server connection which should allow to provide missing fonts, if nedeed.

More information related to the NX reconnection policies are available at: https://www.nomachine.com/AR03C00166

It has been verified that on Windows, under certain conditions unrelated to NX, the system calls handling the listening socket could hang, even if nobody appears to try to connect to this socket. In this case, to prevent session from failing, there could be the need to disable the font channel.

To do this, you can create a file named options in the user NX directory on client side, usually the user's home/.nx directory.

File "options" has to contain the following option:

font=0