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Released on:
Searching in: Software Updates
ID: SU02Q00202
Released on:  2019-02-21
Last update: 2019-02-21
NoMachine 6.5.6 now available

Luxembourg, February 21st, 2019

NoMachine makes available today a minor software update which provides a number of enhancements such as improvements to load-balancing algorithms by allowing the server to choose the node with the minimum load as well seamless support for multi-factor authentication tools such as DUO and PAM-OKTA. This new version, 6.5.6, additionally provides fixes for issues affecting previous versions.

The full list of enhancements for version 6.5.6 is:

FR11P03736 - Configuring the server to start a new session at every connection
FR01L02806 - Giving the possibility to activate log rotation for NoMachine log files
FR10O03537 - Load-balancing sessions on the remote nodes according to the lowest system load
FR07N03139 - Storing the public key for NX authentication in a custom directory
FR09P03676 - Pre-configuring the size of the sensitive area to activate the auto-scrolling in web sessions
FR01P03575 - Improving the support of two-factor authentication with MFA tools like Duo and PAM-OKTA


This latest release also provides the following fixes:

TR11P08995 - The mouse back and forward buttons are ignored in connections to Windows physical desktop
TR11P09002 - The Right Shift key is not correctly detected by some applications on Windows
TR12P09027 - NoMachine tray uses the wrong icon color on Ubuntu MATE 18.x
TR10P08940 - Forwarding network ports fails on Mac - Windows connections
TR12P09034 - Files in a disk connected from OpenSUSE to Windows 10 can be opened only by Notepad
TR12P09042 - Sudden termination of NoMachine on Mac when the hostname contains a new line
TR12P09036 - Sudden termination of NoMachine virtual desktops when Kerberos tickets are renewed
TR12P09044 - Launching session to Windows server leads to system freeze
TR12P09049 - Cannot complete installation on Window 7 because of Runtime Error
TR12P09054 - Cannot authenticate by NX protocol when 2FA authentication uses a RADIUS server
TR07P08752 - Landscape mode doesn`t work when the printer is forwarded from Windows
TR11P08988 - The login form is not displayed in web sessions without any hints on the problem
TR12P09028 - The keyboard doesn't work in a NoMachine session shared through Microsoft Teams
TR01Q09085 - Unselected objects are not darkened in a Cadence project with the dimming option enabled
TR01Q09089 - NoMachine opens a UDP port in the firewall which is not used
TR11P08987 - The login form is no longer diplayed in the browser after a server update
TR01Q09094 - Windows 10 becomes unresponsive when the user connects by NoMachine
TR01Q09101 - NoMachine client ignores the new password entered when the authentication fails during the automatic reconnection
TR01Q09084 - An authentication dialog box appears on Fedora 29 and RHEL 7.6 while creating a virtual session
TR01Q09096 - NoMachine H.264 hardware encoding fails with Volta-based GPUs
TR01Q09106 - Cannot connect by the web to servers federated under a Cloud Server v. 6.4.6
TR01Q09112 - Mouse cursor disappears in NoMachine VNC virtual desktops on Ubuntu 18.04
TR01Q09109 - Session log is filled by warning messages about 'x2 exceeding short int'
TR10O08128 - Client slows down when sorting a big list of sessions
TR02Q09138 - Cannot connect as guest user in a multinode environment
TR11P08965 - A wrong dialog is displayed when 'AutomaticDisconnection 2 ' is set in the server configuration


Supported Platforms

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

Mac OS X Intel 64-bit 10.7/10.8/10.9/10.10/10.11/10.12/10.13/10.14

Linux 32-bit and 64-bit

Red Hat Enterprise 4/5/6/7
SLED 10/11/12/15
SLES 10/11/12/15
openSUSE 10.x/11.x/12.x/13.x/42.x/15.x
Mandriva 2009/2010/2011
Fedora 10/11/12/13/14/15/16/17/18/19/20/21/22/23/24/25/26/27/28/29
Debian 4.0/5.0/6.0/7/8/9
Ubuntu 8.04/8.10/9.04/9.10/10.4/10.10/11.04/11.10/12.04/12.10/13.04/13.10/14.04/14.10/15.04/15.10/16.04/16.10/17.04/17.10/18.04/18.10

Raspberry Pi 2/3 ARMv6/ARMv7/ARMv8


Important notices

All customers with version 4 or 5 installed are invited to read the following document available in the Knowledge Base for further information about what has changed and how to proceed with updating to version 6:

Due to the changes introduced by Apple which has dropped support for 10.5 and 10.6 in recent compilers, NoMachine has discontinued support for those OS X versions. It will still be possible to request packages specifically built for 10.5 and 10.6 under the provisions of a support contract.


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 "Production version". The procedure of downloading and installing Update Version packages is now obsolete.

Automatic updates

The automatic check for updates is scheduled to check our repositories every two days.

To update the free NoMachine package:

- Open the NoMachine User Interface from your Programs Menu.

- Click on 'Settings', then on the 'Server preferences' and finally on 'Updates'.

- Then click on the 'Check now' button.

To update the NoMachine Enterprise Client immediately:

- Click on 'Settings' 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