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Released on:
Searching in: Software Updates
ID: SU04N00101
Released on:  2016-04-21
Last update: 2016-04-21
NoMachine 5.1.22 now available

Luxembourg, April 21st, 2016

NoMachine makes available today a software update solving some issues affecting the previous release. Additionally, a number of improvements have been implemented such as the possibility to disable certain functionalities in the session menu, and creating a trusted user group to make desktop collaboration easier.

The new version, namely 5.1.22, implements the following:

FR04N03093 - Adding a RSA key pair for the NoMachine login
FR03N03060 - Renaming the "SectionSession" directive in the cloud.cfg file
FR03N03072 - Implement pressing "Esc" key exists a dialog
FR03N03076 - Letting administrators enable RGB stream compression for virtual sessions in lightweight mode
FR09M02966 - Making the disconnect/terminate dialog available for virtual desktops not in lightweight mode
FR10M02973 - Adding support for password change requests when connecting by NX protocol
FR03N03079 - Porting NoMachine Web Companion to Java Web Start
FR02J02671 - Allowing trusted users to connect to the desktop without requiring owner's approval
FR05J02679 - Lock down the NoMachine menu inside the session and other features
FR03N03063 - Connecting the default printer from client side to the remote host automatically

Fixes available are for the following:

TR03N06654 - Font size is smaller when connecting by NX Client 3.5.0 to NoMachine server 5.1
TR04N06711 - Cannot interact any longer with the remote desktop after sending or receiving a file
TR03N06559 - "Error is 22: Invalid argument" is given when connecting using key-based authentication
TR02N06527 - Authorization is requested also when the connecting user is the remote desktop owner
TR03N06600 - The 'nxserver --disconnect' command doesn't work as expected
TR03N06602 - Users cannot reconnect a virtual desktop after a network disconnection
TR02N06449 - Session startup is delayed of about 1.4 seconds
TR03N06660 - USB drivers cannot be correctly installed on Manjaro Linux
TR03N06663 - Artifacts can appear in Firefox and Gimp when running in a MATE desktop
TR03N06642 - The NoMachine menu cannot be opened in a web session by using the page peel if Adblock is installed
TR03N06592 - Large size Kerberos tickets are not forwarded to the remote nodes
TR02N06543 - User's settings are not saved for new connections started from the !M icon in the tray menu
TR11L04697 - Spinning wheel runs forever when connecting with SSH and system login and NX Password DB is enabled on the server
TR03N06640 - Cannot reconnect default virtual desktops by NX Client 3.5.0
TR02N06477 - Cannot connect by SSH when a different server is installed where NoMachine free was previously present
TR02N06507 - Authentication with SSH Agent Forwarding does not work on Windows
TR03N06573 - Unresponsive mouse and keyboard on the server host when the NoMachine session is disconnected
TR03N06613 - Mouse clicks are unresponsive in the NoMachine session when screen blanking is enabled on the remote host
TR02N06508 - First login to NoMachine server fails if Kerberos authentication is used
TR12M06277 - Installing NoMachine free over NoMachine client on Windows breaks the installation
TR02N06542 - A new user cannot connect to NoMachine until someone users logs-off
TR03N06672 - Error 'Authentication method not allowed on this server' is issued when connecting by the web
TR03N06652 - The remote desktop is automatically resized also when the session is in 'restricted' mode
TR03N06630 - Keys are repeated unintentionally
TR03N06629 - Keyboard is unresponsive after reconnecting a virtual desktop
TR03N06656 - Black screen after desktop logout with NoMachine free version on a headless Linux machine
TR12M06271 - Error 'connection method not available' is given when connecting by SSH protocol and NoMachine login
TR04N06746 - Connections fail when 'load-average' is chosen as load balancing algorithm and the session limit is reached on the node


Supported Platforms

Windows 32-bit/64-bit XP/Vista/7/8/8.1/10

Mac OS X Intel 64-bit 10.5/10.6/10.7/10.8/10.9/10.10/10.11

Linux 32-bit and 64-bit

Red Hat Enterprise 4/5/6/7
SLED 10.x/11.x
SLES 10/11/12
Open SUSE 10.x/11.x/12.x/13.x
Mandriva 2009/2010/2011
Fedora 10/11/12/13/14/15/16/17/18/19/20/21/22/23
Debian GNU Linux 4.0 Etch/5.0 Lenny/6.0 Squeeze/7.0 Wheezy/8.0 Jessie
Ubuntu 8.04 Hardy Heron/8.10 Intrepid Ibex/9.04 Jaunty Jackalope/
9.10 Karmic Koala/10.4 Lucid Lynx/10.10 Maverick Meerkat/11.04 Natty Narwhal/
11.10 Oneiric Ocelot/12.04 Precise Pangolin/12.10 Quantal Quetzal/13.04 Raring Ringtail/
13.10 Saucy Salamander/14.04 Trusty Tahr/14.10 Utopic Unicorn/
15.04 Vivid Vervet/15.10 Wily Werewolf/16.04 Xenial Xerus


Download NoMachine Packages

You can download the latest packages suitable for your Operating System from the NoMachine Web site at the following URL:

Customers with valid subscriptions should log in to their customer area and download the "Update version" for their "Production Version".

Automatic updates

The automatic check for updates has been enabled since version 4.6.3 and is scheduled to check our repositories every two days.

To update any of the NoMachine servers immediately:

- Run the NoMachine GUI from your Programs Menu.

- Click on 'Preferences' and 'Updates'.

- Then click on the 'Check now' button.

To update the NoMachine Enterprise Client immediately:

- Click on 'Preferences' and 'Updates'.

- Then click on the 'Check now' button.

More information about the check for automatic updates is available here:

Manual package update

Please follow the instructions to update your installation manually:

On Windows:

- Download and save the EXE file.
- Double click on the NoMachine executable file.
- As for the installation, the Setup Wizard will take you through all steps necessary for updating NoMachine.

On Mac OS X:

- Download and save the DMG file.
- Double-click on the Disk Image to open it and double-click on the NoMachine program icon.
- As for the installation, the Installer will take you through through all steps necessary for updating NoMachine.

On Linux:

You can use the graphical package manager provided by your Linux distribution or update NoMachine by command line by following instructions below.
If you don't have the sudo utility installed, log on as superuser ("root") and run the commands without sudo.


- Download and save the RPM file.
- Update your NoMachine installation by running:

# rpm -Uvh <pkgName>_<pkgVersion>_<arch>.rpm


- Download and save the DEB file.
- Update your NoMachine installation by running:

$ sudo dpkg -i <pkgName>_<pkgVersion>_<arch>.deb


- Download and save the TAR.GZ file.
- Update your NoMachine installation by running:

$ cd /usr
$ sudo tar xvzf <pkgName>_<pkgVersion>_<arch>.tar.gz
$ sudo /usr/NX/nxserver --update

If you are installing Enterprise Client or Node run respectively:

$ sudo /usr/NX/nxclient --update
$ sudo /usr/NX/nxnode --update



Installation and configuration guides for the NoMachine products are available at:


The NoMachine Development Team