ThinLinc 4.3.0 Release Notes


A new ThinLinc release is finally here, version 4.3.0. It includes more than 90 enhancements. The most prominent features are:

  • Support for modern Linux and Windows platforms, such as Red Hat Enterprise Linux 7 and Windows 2012 R2.
  • Many additional ARM platforms are supported, including ARM based terminals from Fujitsu, IGEL, Wyse, and HP.

Changes in This Release

In the list below, the bug number is given in parentheses. For more information, visit


  • ThinLinc works on most modern Linux distributions and Oracle Solaris (R). We recommend that you deploy ThinLinc on one of these tested platforms:
    • Red Hat (R) Enterprise Linux Server 7 (64-bit)
    • SUSE Linux Enterprise Desktop 11 SP3 (R) (64-bit)
    • Ubuntu Desktop (R) 14.04 (64-bit)
    • Oracle Solaris (R) 10
  • The server can read license files from ZIP archives. (4898)
  • The previous version did not run correctly on systems without "PAM_XDISPLAY". This includes Red Hat Enterprise Linux 5. This problem has been fixed. (5166)


  • The client based on Java Applet technology has been removed in favour of the HTML5 client. (4597)
  • With ThinLinc 4.2.0, the services for the Web Administration Interface and the HTML5 client failed to start on systems without IPv6 support. This has been corrected. SSLv2 requests are now handled correctly. (5167, 5171)
  • A new tool called "tl-env" has been added. It can be used to execute a command using a ThinLinc session environment, from outside of the session. (5265)

Native Client

  • The keyboard handling has been reworked for improved compatibility. (4677)
  • With the previous client, keyboard combinations using Ctrl+Alt did not work correctly. This has been fixed. (4984)
  • The support for "dead keys" has been improved. (3223)
  • A package for the ARM based "eLux RT" platform has been added. This means that the client can be used on terminals such as Fujitsu Futro Z220. (4610)
  • A package for the ARM based IGEL IZ1 terminal has been added. (5001)
  • A Linux client package for "soft-float" ARM platforms has been added. (A package for "hard-float" platforms such as Fedora 20, Debian 7.0, and Ubuntu 12.10 or later was added in the previous release.) (5181)
  • The client now works on the ARM based Wyse T50 terminal, which runs "Dell Wyse Enhanced Ubuntu Linux". (4495)
  • The client now works on the ARM based HP t410 terminal. (4496)
  • A ThinLinc profile for the HP Thinpro "Connection Manager" has been added. This makes it easier to deploy the client on HP terminals. (5185)
  • The option for disabling SSH encryption has been removed. (3059)
  • With earlier versions of the client running on Windows, the copy/paste functionality sometimes stopped working after a while. This has been corrected. (5096)

HTML5 Client

  • Earlier versions of the HTML5 Client did not accept passwords longer than 31 characters. This has been corrected. (5212)

Desktop Customizer

  • The Desktop Customizer now works with the MATE Desktop Environment. (5214)

Windows (R) Integration

  • Windows Server 2012 and Windows Server 2012 R2 are now supported RDP servers. (4552, 4912)
  • A US International keyboard layout is now included. (5016)
  • With ThinLinc 4.2.0, resizing of a SeamlessRDP session could result in an additional instance of the running application, or loss of SeamlessRDP functionality. (5151, 5183)
  • The RDP client in ThinLinc 4.1.1 and 4.2.0 could sometimes fail with error message "disconnect: Invalid licensing message." This has been corrected. (5209)

Corrected Issues

ThinLinc has also been enhanced in many other ways. The complete list of corrected issues is:

3059, 3223, 3939, 4071, 4151, 4313, 4495, 4496, 4552, 4581, 4597,
4610, 4677, 4702, 4724, 4814, 4853, 4898, 4912, 4939, 4964, 4984,
4986, 5000, 5001, 5012, 5016, 5026, 5031, 5043, 5055, 5058, 5072,
5096, 5108, 5111, 5118, 5119, 5126, 5129, 5132, 5140, 5145, 5149,
5151, 5152, 5153, 5157, 5158, 5159, 5161, 5162, 5166, 5167, 5168,
5171, 5175, 5176, 5180, 5181, 5182, 5183, 5185, 5191, 5192, 5193,
5194, 5195, 5196, 5197, 5200, 5206, 5208, 5209, 5212, 5213, 5214,
5218, 5221, 5222, 5224, 5234, 5239, 5240, 5243, 5248, 5255, 5261,
5262, 5265, 5283
ARM is a registered trademark of ARM Limited.
Dell is a registered trademark of Dell Inc.
eLux (R) is a registered trademark of UniCon Software GmbH.
HP is a registered trademark of Hewlett-Packard Company.
IGEL is a registered trademark of IGEL Technology GmbH
Java is a registered trademark of Oracle Corporation.
Linux (R) is a registered trademark of Linus Torvalds.
Red Hat (R) is a registered trademark of Red Hat, Inc.
Solaris (R) is a registered trademark of Oracle Corporation.
ThinLinc (R) is a registered trademark of Cendio AB.
Ubuntu (R) is a registered trademark of Canonical Ltd.
Windows (R) is a registered trademark of Microsoft, Inc.
Wyse is a registered trademark of Wyse Technology Inc.

Frequently Asked Questions

  • ThinLinc is packaged in subscriptions with a tiered pricing system. A higher number of subscriptions will give a lower price. The subscriptions can be purchased for different periods, 12, 36 and 60 month. A longer duration will give a greater price. The payment of the subscriptions is done in advance.

    The default rule is that the prices are set in accordance with the number of subscriptions that are purchased at the actual call off. Deviation from this can be eventually agreed if a roll-out plan can be committed in advance.

  • Every valid ThinLinc Subscription Agreement has a specific ID. Contact Cendio at and refer to your ID, and we will issue new user licenses for you.

  • Contact Cendio support team at And refer to your ThinLinc Subscription ID in your support request.

  • We will set up an evaluation account that gives the permission to receive support directly from our technical team. Cendio can also provide trial licenses for more than 10 users. Please contact directly.

  • Cendio wants to sponsor organizations where the business aims to make the world better. This means to help people, regions etc. that really need help. Please contact us a

  • Cendio offers a non-profit discount for organizations that fall under the definitions that can be found at the following link. Please contact us at for pricing. 

  • Cendio will, in good time before expiration of the ThinLinc Subscriptions Agreement, send a reminder by email. The renewal process will follow the same routines that are used in a new or additional purchase.

  • Other set-ups are possible for bigger deals. Contact

  • Purchases can be done directly via invoice, web shop or by a reseller. Cendio is a Swedish and EU company with long experience from doing business with foreign organizations. If you have any questions or need support, please contact us at

  • Best functionality and performance will always be achieved by upgrading to the latest version, both on the server and client-side. A newer version on the client-side will always give a better user experience than a former version. Cendio’s ambition is to keep good compatibility and functionality between the different versions. Historically, good compatibility between versions has been 3-5 years.

  • A ThinLinc set-up consists of a server software, client software and user licenses.

    Server software

    The server software is the heart of ThinLinc installation and handles all sessions, desktop environments and generates the virtual desktop, workspace etc.

    User licenses

    To allow more than 10 sessions to connect access to the server software, user licenses need to be added into the server software. User licenses are bought from Cendio. Please note, when placing user licenses into the ThinLinc server, the counting starts from 0, not 10. In concrete, this means that you need to buy and install the number of user licenses that you need.

    Client software

    The client software is installed on the device that is used to connect to the server and provision the virtual desktop / workspace. If using the web access client, no local installation of client software is needed, the provisioning is generated via the web browser that is installed at the server.

  • It’s up to the licensee to decide who can connect into the server installation. The ThinLinc client software is free of charge and can be downloaded by everyone.

  • The licensing is per organization. There is no limitation on how the ThinLinc user licenses are distributed in the legal organization, as long as the number of consumed licenses don’t exceed the number of paid licenses. It’s allowed to move the user licenses, but not copy.

  • The license use can be seen in the status module, how to manage can be found at . ThinLinc will notify you when the limit of licenses has been reached, for detailed information see,

  • Both the ThinLinc server and client software are free to distribute. The user licenses are connected to a purchase and are not allowed to distribute. For more detailed information, see

  • A specific version of ThinLinc is supported 3 years from release date. After 3 years, Cendio can’t guarantee support.

  • The number of user licenses that will be delivered will be in accordance with the number of subscriptions that have been acquired by the customer. The user licenses are perpetual.

  • When adding user licenses into the ThinLinc server, the counting will start from zero. So if you require 200 users, you need to have 200 user licenses

  • You need to buy user licenses and install them in the ThinLinc server. The user licenses are received through buying ThinLinc subscriptions.

  • It’s easy to add new users into a current ThinLinc set-up. By purchasing additional subscriptions into your agreement, so will we issue additional user licenses.

  • Cendio will, after receiving a valid order, distribute user licenses via email for the latest version after a purchase. If the purchase is a renewal and the customers have already received the latest version, no user licenses will be delivered by default, updated licenses will be delivered on request in this case.

  • It’s possible to merge existing agreements. When doing a merge, the period shall be at least 12 months.

  • The default rule is that the prices are set in accordance with the number of subscriptions that are purchased at the actual call off. Deviation from this can be eventually agreed if a roll-out plan can be committed in advance.

  • The client software packages are free of charge.

  • The ThinLinc license is perpetual and will still work after the expiry date of the ThinLinc subscriptions.


  • Both as an individual and as an organization, it is not allowed to use the free version of ThinLinc if you have valid user licenses.

  • ThinLinc is free to use for up to 10 concurrent users for both individuals and organizations (on a group basis).

  • ThinLinc Subscriptions give the possibility to run more than 10 concurrent users per ThinLinc installation. It also gives technical support directly from Cendio and the right to get upgrades (new versions) for ThinLinc.

  • ThinLinc Premium Subscription gives prioritized answers, faster response time, and direct access to our qualified technical support via telephone service.

  • The free version of ThinLinc is limited to 10 concurrent users and is supported via the ThinLinc Community. The commercial version of ThinLinc is packaged in a so-called subscription and can be scaled for more than 10 users. The subscriptions also give the right to get professional support in ThinLinc directly from the Cendio technical team.

  • ThinLinc is free to use up to 10 users at the same time per individual or organization worldwide, without any obligations. The usage can be 10 installations with one user per each or one installation with 10 users. What matters is that the 10 users aren’t exceeded.

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