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Released on:
Searching in: Software Updates
ID: SU02L00101
Released on:  2014-04-02
Last update: 2014-04-09
NoMachine version 4.2.15 now available

Luxembourg, April 2nd, 2014 - NoMachine announces the general availability of the latest update, version 4.2.15, of its desktop and server products for Windows, Mac OS X and Linux.

NoMachine 4.2 development was mainly aimed at improving performance and stability and solving all remaining issues affecting the 4.1. Besides that, a number of minor functional and graphical refinements were added, among them:

- Lightweight mode for virtual desktops in all Enterprise products has now become the default.

- Administrators can decide to show or hide the server preferences GUI.

- Improved DirectX support on Windows, with many bug fixes that should make possible to enable HW acceleration even on system where before it had to be disabled.

- Sound alerts for incoming message notifications.


Here is the complete list of Trouble Reports resolved since 4.1.29:

TR02L04282 - The NoMachine GUI crashes when inserting credentials for making administrative operations
TR03L04315 - The client crashes when connecting from a machine with 8 CPU or more
TR02L04264 - Graphical glitches are visible when connecting in lightweight mode
TR09K02776 - Cannot copy and paste from Mac OS X to Emacs running in a virtual desktop session
TR02L04250 - Copy and paste in Notepad doesn't work in new virtual desktop sessions
TR03L04302 - Cannot send Ctrl+alt+del to a remote NoMachine Windows host
TR02L04270 - Command nxserver --message sends incomplete messages
TR02L04269 - Cannot send broadcast messages to running sessions
TR02L04272 - When sending a message to the session, the pop-up dialog is displayed for a few seconds only
TR02L04273 - Error message "...Can't handle the client requests directly..." is received after upgrading cluster server installation
TR04L04337 - Sometimes error "The connection has timed out" occurs when starting a new virtual desktop session in a multi-node environment
TR02L04285 - Cannot create a new RDP virtual desktop with client 4.1
TR02L04266 - Session start-up problem on Windows XP servers
TR02L04279 - Cannot create a new custom session from the web by using the 'Run the following command' option
TR02L04283 - Incorrect date is shown in listing of sessions
TR02L04276 - Web connections to a remote desktop hang, error log reports "free(): invalid next size (fast)"
TR02L04290 - The web server nxhtd is not started after updating the Clound Server to 4.1.29
TR03L04309 - Server 4.1.29 doesn't accept a Portal Server installation as remote node
TR03L04298 - Cannot use H.264 codec after client update to version 4.1.29 on Windows
TR03L04317 - NoMachine Client cannot use the H.264 encoder installed on Gentoo
TR03L04303 - Remote Windows PC hangs when logout is performed from the NoMachine session
TR02L04291 - Cannot restart nxnode and nxd when administrator changed UID of the nx user
TR03L04320 - Applications cannot find the Kerberos ticket cache inside the session
TR03L04312 - Different behaviour for user authorization when logging in with display name or account ID on Mac
TR03L04332 - Connections by SSH don't work after updating to NoMachine Workstation
TR03L04335 - Cannot use SSH key pairs longer than 1024 chars to connect by SSH and NoMachine login
TR03L04297 - Resolution on the server is not restored even if "Resize remote screen" is selected
TR03L04316 - Connecting disk fails when the server is installed in a non-default path on Linux
TR03L04321 - 'Send a file from the client' does not work from the NoMachine menu
TR03L04310 - Audio is not available in custom sessions running in floating window mode
TR02L04257 - Audio is not available in lightweight sessions
TR02L04256 - Audio disabled when connecting to local interface
TR02L04275 - NX client 3.5 cannot connect to desktops on remote nodes running NoMachine 4
TR03L04299 - Session from Windows freezes for some seconds from time to time when the lightweight mode is enabled
TR03L04306 - Microsoft Office Products work only in safe mode when "Use Acceleration for Display Processing" is enabled
TR03L04304 - Domain users always receive 'Desktop owner did not accept connection request' when trying to connect to Windows
TR03L04307 - Server init script doesn't match LSB Default-Stop values on Ubuntu 12.04
TR03L04323 - Installation requires very long time on some SUSE Linux machines
TR02L04281 - The 'uuid' file necessary to identify the host machine is missing after the automatic update from 4.0 to 4.1

Supported Platforms

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

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

Linux 32-bit and 64-bit
Red Hat Enterprise 4/5/6
SLES 10/11
Open SUSE 10.x /11.x/12.x
Mandriva 2009/2010/2011
Fedora Core 10/11/12/13/14/15/16/17/18
Debian GNU Linux 4.0 Etch/5.0 Lenny/ 6.0 Squeeze/ 7.0 Wheezy
Ubuntu 8.04 Hardy Heron/8.10 Intrepid Ibex/Ubuntu 9.04 Jaunty Jackalope/
9.10 Karmic Koala/10.4 Lucid Lynx/10.10 Maverick/11.04 Natty/11.10 Oneiric/12.04 Precise Pangolin

Download NoMachine Packages

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

or from your Customer Area if you are a registered customer.

Automatic updates

To update any of the NoMachine servers:

- 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:

- Click on 'Preferences' and 'Updates'.

- Then click on the 'Check now' button.

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