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Released on:
Searching in: Software Updates
ID: SU10P00200
Released on:  2018-10-11
Last update: 2018-12-04
NoMachine 6.3.6 now available

Luxembourg, October 11th, 2018

NoMachine makes available today a minor software update which is aimed at solving issues affecting the previous release and to consolidate recent hardening of security measures in Qt and Apache. Additionally, it adds support for SSH agent forward-authentication methods and provides significant performance improvements for high bandwidth networks: frame rate and quality can now scale up to use more bandwidth when available and similarly the file transfer service will be able to use the network connection's full capacity.

This new version, 6.3.6, provides fixes for issues affecting previous versions.

Enhancements available are:

FR01O03298 - Making NoMachine server compatible with Fail2ban
FR02N03019 - Improving the load balancing mechanism when a custom script is used
FR05P03613 - Providing a configuration key to lock down web connections by nxs files
FR01P03573 - Adding a check at server's startup to verify if 'localhost' can be resolved
FR10L02834 - Supporting a custom script for setting environment variables inside a virtual desktop session
FR04M02927 - Showing the connected browser type and version in the server session list
FR10O03524 - Giving the possibility to execute custom scripts triggered on change resolution events
FR01O03301 - Showing the real client version in the output of the nxserver --list/--history commands
FR11O03548 - Adding a server configuration key to allow administrators disabling clients' auto-reconnect
FR04N03096 - Add a new configuration key to enable/disable connections to the system login screen
FR09P03686 - Upgrading nxhtd to the last Apache version (v. 2.4.34)
FR09P03702 - Auto-feed user's credentials to web session
FR09P03681 - Adding a client preference to configure a specific frame rate
FR09P03705 - Adding options in display settings to configure frame rate in web sessions
FR04P03602 - Supporting a SSH authentication agent
FR09P03704 - Using a frame rate for encoding displays specified by the user
FR09P03677 - Replace some connection error messages with user friendly issues description
FR09P03698 - Adding a switch to the 'nxserver --debug' command to enable debug logs for the display agent
FR08P03662 - Renaming the EnableServerRole server configuration key into EnableDirectConnections


This latest release also provides the following fixes:

TR12O08343 - Cannot authenticate to Windows via NX protocol and private key authentication
TR03N06664 - Session status is inconsistent in a multi-node environment
TR05P08571 - Blurred fonts occurs in a KDE Konsole
TR06P08617 - Web sessions ignore the 'EnableWebConnectionName' key
TR05P08534 - The AcceptedMethods key is present in the server configuration file after upgrading to v. 6.1.6
TR05P08565 - Kerberos Credentials Cache is relabelled each time users log-in by NoMachine
TR06P08635 - The automatic lock of the screen is not activated with CTWM, Fluxbox, MWM
TR06P08647 - 'WARNING! Cannot renew Kerberos ticket' is printed in server logs
TR06P08638 - NoMachine falls back to VP8 encoding when FFmpeg 4.0.1 is installed on the client
TR06P08665 - The nxnode process suddenly terminates when the connection with the display cannot be established
TR01P08368 - Cannot execute files from disk mounted on Windows 7
TR01O07504 - Cannot print from RHEL 7 to Windows 10
TR03P08440 - A disk connected from server side doesn't show up in the 'Remote disks' list
TR03P08462 - Content of NoMachine Installer is badly displayed when Windows uses the dark theme
TR07P08747 - Sudden termination of NoMachine client on Windows 10 (April 2018 Update)
TR06P08670 - The 'nxserver --install' script removes the libnxusb library on old Linux kernels
TR07P08737 - Image quality issues occurring when H.264 codec is used and multi-pass encoding is disabled
TR02O07628 - Occasional crashes of nxnode process in UDP code
TR07P08710 - System accounts configured to use Kerberos cannot start NoMachine sessions on Fedora
TR08P08765 - Redundant messages 'WARNING! Can't create the IPv6 socket' are printed in logs
TR05N06898 - Key forwarding does not work properly when smart card is used
TR07P08709 - Audio is not available in NoMachine nested sessions
TR08P08797 - Connection timeout error when reconnecting to the physical display
TR01P08377 - Conflict with NoMachine USB driver on Lenovo ThinkPad T470s
TR01O07529 - Ghost printers are forwarded in the NoMachine sessions after a system reboot on CentOS 7/RHEl 7
TR01P08356 - PulseAudio files are left in the /tmp directory when the NoMachine session is terminated
TR08P08761 - Purple and green bands show up in the browser window when connecting the web session from FF or Chrome
TR09P08844 - The ownership of Kerberos ticket cache file is changed when NoMachine is restarted
TR07M05704 - White or black screen in Windows XP session
TR10P08883 - The login window appears to be very small on Oracle Linux 7u4
TR07P08694 - The manual selection option has no effect on NoMachine User Interface
TR10P08909 - The nxserver service is disabled after a physical desktop failure
TR10P08887 - Possible arbitrary code execution on client's wintab32.dll preload
TR10P08920 - Low performance on some MacBook Pro models


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.x/11.x
SLES 10/11/12
openSUSE 10.x/11.x/12.x/13.x/42.x/15.0
Mandriva 2009/2010/2011
Fedora 10/11/12/13/14/15/16/17/18/19/20/21/22/23/24/25/26/27/28
Debian GNU Linux 4.0/5.0/6.0/7.0/8.0/9.0
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

Raspberry Pi 2/3 ARMv6/ARMv7/ARMv8


Important notices

All customers 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 from version 5:

Installations of version 6 can proceed with using automatic updates from within the User Interface.

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