For the Tosibox Key lifecycle and support status details, refer to Tosi software lifecycle details article.

Release 4.4.1 (Windows only)

Date: 15 Apr 2026

Highlights

• Enhanced visual clarity and usability across the client UI.
• More seamless authentication and SSO experience.

New Features

• Automatic login to Tosi Control after SSO sign‑in. (SSO implemented on Tosi Control + Key attached to Tosi Control user) 

Improvements

• Improved UI contrast and accessibility in main view. 
• Removed support for legacy Key 100 devices and related deprecation warnings. 

Bug Fixes

• Fixed incorrect placeholder text in Gateway-related views. 
• Fixed cropped Key names and missing icons in the Gateway list. 
• Resolved a crash when opening the “Connect gateways” window. 

Known issues

• A warning message about locking the Key with a failed password attempt may appear twice before a PUK code is required  

Supported operating systems

• Windows 11 and 10 (64-bit Intel x86 architecture)
• Windows Server 2019

 As always, we welcome your feedback. Please contact our support team at our Service Portal with any questions.

 

Release 4.4.0 (Windows only)

Date: 5 Mar 2026

Highlights

We've updated the visual design to reflect our evolution from Tosibox to Tosi: new colors, refined icons, and a cleaner interface.

With this release, Tosi Client integrates with Tosi Control for centralized user access control. Organisations can integrate Tosi Control with their preferred Identity Provider (IdP) via SAML2, such as Okta or Microsoft Entra ID. With SSO, users sign in to the Tosi Client using the same credentials they already use for their organisation.

To enable this, ensure both Tosi Control and SSO are activated for your organisation in Tosi Control.

New features

• Renamed Tosi Client
• Updated visual design to match the Tosi brand
• Enables customer registration via Tosi Control
• Tosi Client integrates with Tosi Control for centralized user access management (SSO)

Improvements

• Reminder of Key 100 end of support

Bug fixes

• Fixed an issue where updating backup Keys could stall indefinitely in large environments
• More robust handling for LAN device names

Known issues

• A warning message about locking the Key with a failed password attempt may appear twice before a PUK code is required

Supported operating systems

• Windows 11 and 10 (64-bit Intel x86 architecture)
• Windows Server 2019

As always, we welcome your feedback. Please contact our support team at our Service Portal with any questions.

 

Release 4.2.2 (Windows only)

15 October 2025

Improvements

• Reminder of Key 100 End of Product Support
• Improved startup performance on large environments

Known issues

• A warning message about locking the Key with a failed password attempt may appear twice before a PUK code is required
• Restarting the computer may be necessary after the update for the Key software to function correctly

Supported operating systems

• Windows 11 and 10 (64-bit Intel x86 architecture)
• Windows Server 2019

 

Release 4.2.1 (Windows only)

3 July 2025

Improvements

• Key 100 support removal notice

Bug fixes

• Resolved an issue in automatic reconnecting after internet outage
• Updated copyright year in About -dialog

Known issues

• Lock connections are not automatically restored after internet outage 
• A warning message about locking the Key with a failed password attempt may appear twice before a PUK code is required
• Restarting the computer may be necessary after the update for the Key software to function correctly

Supported operating systems

• Windows 11 and 10 (64-bit Intel x86 architecture)
• Windows Server 2019

 

Release 4.2.0 (Windows only)

22 May 2025

Improvements

• Application framework updated to Qt 6.5.3
• Security updates
• TLS 1.1 support removal notice

Bug fixes

• Fixed scaling issues on Windows affecting the visibility and accessibility of some application windows
• Fixed a typo in TosiControl login
• Fixed text cropping and overlapping issues in several views
• Fixed an issue where the number of available SoftKey licenses was not correctly shown

Known issues

• A warning message about locking the Key with a failed password attempt may appear twice before a PUK code is required
• Restarting the computer may be necessary after the update for the Key software to function correctly

Supported operating systems

• Windows 11 and 10 (64-bit Intel x86 architecture)
• Windows Server 2019

 

Release 4.1.1 (Windows only)

20 November 2024

Improvements

• Added logging support to installer

Bug Fixes

• Resolved an issue where install would fail with an error

• Resolved an issue where after an update, the Key couldn’t connect to Locks

Known issues

• It may be necessary to restart the computer after the update for the Key software to work properly

Supported operating systems

• Windows 11 and 10 on 64-bit Intel x86 architecture

• Windows Server 2019

 

Version 4.1.0 (Windows)

30 October 2024

Improvements

• Added feature for users to update Backup Keys remotely from a Master Key, for ensuring that no Locks/Keys are missing 

Bug Fixes

• Resolved an issue where after an update, the Key couldn’t connect to Locks

Known issues

• It may be necessary to restart the computer after the update for the Key software to establish connections to the Locks

Supported operating systems

• Windows 11 and 10 on 64-bit Intel x86 architecture
• Windows Server 2019

 

Version 4.0.1 (Windows)

27 August 2024

Bug Fixes

• Resolved an issue where opening an RDP client from Key user interface failed
• Resolved a security vulnerability in Key installer

Supported Operating Systems

• Windows 11 and 10 on 64-bit Intel x86 architecture
• Windows Server 2019

 

Version 4.0.0 (Windows)

1 July 2024

Improvements

• Application framework has been updated to Qt 6.5, providing improved performance, new features, and enhanced user interface capabilities.
• Windows binaries are now 64-bit, offering enhanced compatibility with modern systems.

Removed

• 32-bit build for Windows will no longer be offered. Users are encouraged to switch to the 64-bit version to benefit from better performance and compatibility.

Supported Operating Systems

• Windows 11 and 10 on 64-bit Intel x86 architecture
• Windows server 2019

 

Version 3.3.3 (macOS)

24 April 2024

New features and enhancements

• Added Lock 100 EOL notification
• macOS 14 (Sonoma) support

Supported operating systems

• macOS 14 (Sonoma) and 13 (Ventura) on ARM and Intel architectures

Dropped features

• Support for macOS 12 (Monterey) has been discontinued.

Known issues

• Tosibox Key clients may occasionally experience issues recognizing the HW Key on computers operating with macOS 14 (Sonoma). A restart of the computer should solve this problem.

 

Version 3.3.2 (Windows)

27 February 2024

New feature

• Added Lock 100 EOL notification

 

Version 3.3.1 (Windows)

23 February 2024

Bugfixes

• Resolved TBSA-024-101. It is no longer possible for non-privileged local user to execute arbitrary code

 

Version 3.3.0 (Windows, macOS)

22 August 2023

 

Version 3.2.3 (Windows, macOS)

10 May 2023

New features and enhancements

• Greatly enhanced performance especially in large environments
• Resolved issue where Tosibox Key was not detected on macOS Ventura
• Spaces in password are no longer accepted
• Password is now mandatory when taking new Tosibox Key in use
• Added check and display of informative message if downloaded application update package is corrupted
• Message is shown in Key UI if matching a Tosibox Key to a Tosibox Node has failed due to information being corrupted
• Added progress bar during batch removal of Keys from Master Key
• Device list column sizes are kept as user has set them
• Disabled Layer 2 connection type for Tosibox Lock for Container when connecting to Tosibox Virtual Central Lock
• Default connection type is Layer 3 when connecting Tosibox Node to Tosibox Virtual Central Lock
• Informative status text "Local connection" is shown in device list when connecting within the same subnet
• Security updates due to upgraded system libraries

Supported operating systems

• Windows 11 and 10 on 64-bit Intel x86 architecture
• Windows Server 2019
• macOS 13 (Ventura) and 12 (Monterey) on ARM and Intel architectures

Dropped features

• Technical support for Windows OS 32-bit architecture is no longer provided

Known issues

• Layer 2 connection is not supported for macOS on ARM architecture. See this helpdesk article for more information.

 

Version 3.2.2 (Windows)

7 June 2022

• Opening VPN to large VCL environment should now work faster and more reliably
• Fixed an issue where sub key names were not available in lock as connection names after assigning access rights to multiple sub keys
• Fixed an issue where removing a SoftKey would not always work affecting typically only large environments

 

Version 3.2.1 (Windows, macOS)

4 October 2021

• Fixed VPN connectivity issue with Lock 100 and Lock 200 running SW v3.3.3 or older

 

Version 3.2.0 (Windows, macOS)

22 September 2021

New features

• Support for multiple SoftKeys under the same OS user account, selectable from the Key Client UI
• Lock grouping in the Key Client UI
• Lock groups can be local or synced between Master HW Keys
• HW Key or SoftKey password can be stored locally, under the same user OS account only
• HW Key passwords are subject to extended password complexity requirements
• Removed possibility to disable user password from the HW Key

Enhancements

• Fix for several CVE’s and other potential security vulnerabilities and implemented under the hood security improvements
• Multiple fixes for improved support on Windows 10 and Windows update procedure
• Upgraded Qt, OpenSSL, OpenVPN and other system libraries

Supported operating systems

• Supported Windows OS’s: Windows 8.1 and Windows 10
• Supported Windows Server OS’s: Windows Server 2012 R2, Windows Server 2016 & Windows Server 2019
• Supported Mac OS’s: Mac OS X 10.14 (Mojave), Mac OS X 10.15 (Catalina), Mac OS X 11 (Big Sur)

Known issues

• Support for OS X 11 (Big Sur) – Layer 2 is not supported in the Tosibox Key client when installed on Mac OS X 11 (Big Sur) running on ARM processor. See our helpdesk article for more information.
• Windows-specific: Once Key Software v3.2 has been installed on a PC, deployed Softkeys will not work if the Key Software is reverted back to an earlier version (e.g. v3.1.4) due to the enhanced security profiles 
• Key 3.2 requires the latest software on Lock 100 (3.3.5) and Lock 200 (3.3.6) to connect

 

Version 3.1.4 (macOS)

23 February 2021

Enhancements

• Support for OS X 11 (Big Sur) – Layer 2 is not supported in the Tosibox Key client when installed on macOS Big Sur (version 11 and newer) running on ARM processor. See our helpdesk article for more information.
• Improved stability

 

Version 3.1.3 (Windows, macOS)

9 September 2020

Enhancements

• Number of SoftKey licenses is now visible on Manage Keys view
• Improved search for Locks on main window 

 

Version 3.1.2 (Windows, macOS)

2 April 2020

Enhancements

• Tosibox Key related support update (Key revision EF)
• Key has an about dialog
• Improvements to Sub Key and SoftKey support
• Fix for an issue where SoftKey password may suddenly stop working
• Several stability and usability improvements

 

Version 3.1.1 (Windows)

5 December 2019

Enhancements

• Fix for an issue where SoftKey fails to open a VPN connection if the Windows user name has non-ascii characters
• Non-ascii characters in SoftKey confirmation dialog are now displayed correctly
• Fix for an issue where the Windows installer may have randomly failed to close processes

 

Version 3.1.0 (Windows, macOS)

16 November 2018

New features and enhancements

• SoftKey users can now remove their own SoftKey instance.
• SoftKey licenses can now be activated even if they are purchased for more than one Backup Key.
• SoftKey confirmation dialog now displays information about the client computer and user.
• SoftKey application can now be closed by closing the window.
• The connection type can now be chosen for Keys and SoftKeys when granting access rights to a Lock.
• In Key Manager, searching for Keys works now even if they are placed inside a group.
• Search feature in main window now covers also network devices connected to Locks.
• Key software now prompts the user for action when a Key device is inserted while using SoftKey.
• Sub Locks (L2) can now be renamed from Master Key.
• Sub Key can now see its Master Key(s) in Key Manager.
• Fix for an issue on Windows where the install process got stuck when installing Key software from Key’s USB mass storage.
• Several smaller reliability and performance improvements
• Support for Mac OS X versions 10.7 (Lion) and 10.8 (Mountain Lion) has been discontinued.

 

Version 3.0.2 (Windows, macOS)

2 January 2018

Enhancements

• Fix for an issue where mounting a storage volume or network drive triggered a password prompt for SoftKey
• Fix for an issue where SoftKey confirmation did not complete if SoftKey client was not restarted but was left in ‘Activation completed’ dialog instead

 

Version 3.0.1 (Windows, macOS)

21 December 2017

Enhancements

• Fix for an issue where SoftKey would lose its data during Windows 10 update
• Fix for an issue where SoftKey could not connect to a Lock if the system clock of the Lock was behind
• Fix for an issue where the VPN connection would not establish if the user’s Key password had a backslash character

 

Version 3.0.0 (Windows, macOS)

15 December 2017

New features and enhancements

• Added SoftKey support
• Updated user interface design and icons
• Improved user interface performance with large number of Locks and devices
• Fix compatibility with macOS 10.7 – 10.11
• Fix for an issue where network share could not be opened from Key user interface on Windows
• Reliability improvements

 

Version 2.15.1 (Windows, macOS)

8 September 2017

Enhancements

• Fix for an issue where the Key software triggered system dialogs on Windows computers with removable media or floppy drives

 

Version 2.15.0 (Windows, macOS)

6 September 2017

New features and enhancements

• Better support for high DPI screens, including Macs with Retina displays
• Master Key can now be matched remotely with a Virtual Central Lock
• New Locks are shown on the UI immediately even if the Lock is not online yet
• Improved wording and layout for password dialogs
• When managing multiple Keys at once, the access rights to Locks can now be also removed
• Number of available Mobile Clients is now visible in the Key Manager window
• Several fixes for Backup Key creation and removal
• Accepting the End User License Agreement (EULA) is now required for new installations
• Sub Keys no longer see the Sub Locks under a (Virtual) Central Lock if they don’t have access to their network devices
• New access rights notifications are now shown in batches instead of one by one
• Also Sub Locks can now be searched with the main window search box
• Overlapping network issues are now indicated more clearly if their source is a TOSIBOX VPN connection
• Support for OS X 10.5 (Leopard) and 10.6 (Snow Leopard) and 32-bit Macs is dropped. Earliest supported macOS / OS X version is now 10.7 (Lion).

 

Version 2.14.6 (Windows, macOS)

9 February 2017

Enhancements

• Fixes and reliability improvements to VPN adapter handling on Windows
• User interface performance improvements

 

Version 2.14.4 (Windows, macOS)

26 January 2017

New features and enhancements

• Backup Key creation is now performed in the background and indicated with a progress bar.
• A reminder about creating a Backup Key has been added.
• Functionality to synchronise a Backup Key to the Master Key has been added. The function is available when the the Backup Key is inserted to the same computer with the Master Key and an out-of-sync situation is detected.
• The Windows VPN network adapters are now disabled after the connection is closed. This fixes an issue on Windows operating systems where the VPN connection could be established only once.
• On Windows operating systems, unknown network protocols are now disabled on the VPN network adapters by default. This fixes some issues that were caused by 3rd party applications that install new network protocols.
• Fix for an issue where a Key could not be re-used after removing/resetting it.
• Fix for an issue where the Key software’s internal configuration might have gotten corrupted.
• Fix for an issue where the VPN connection did not establish on Windows when there were two Keys connected to the computer.

 

Version 2.13.11 (Windows, macOS)

19 February 2016

New features and enhancements

• Improved UI performance with large number of Locks.
• Key serializations are now performed in the background and indicated with a progress bar.
• Global name is now shown also for Locks that are connected to a Central Lock.
• The signed Windows software packages are now also timestamped.
• Fix for a compatibility issue with nvspbind.exe on newer Windows versions.
• Fix for an issue where the application could crash when serializations are reset on the Lock while VPN connection is open.

 

Version 2.13.4 (macOS)

1 October 2015

Enhancements

• Support for OS X 10.11 El Capitan (this Key SW update should be installed before upgrading the OS)
• Global name is now shown also for Locks that are connected to a Central Lock

 

Version 2.13.2 (Windows, macOS)

17 September 2015

New features and enhancements

• Search boxes have been added for filtering the main Lock list and Locks and Keys in different dialogs
• Lock list ordering can now be chosen (by online status or by name)
• Lock names are now global: when a Lock is renamed on a Master Key, the same name gets updated on Sub Keys.
• Network device IP address can now be copied to clipboard
• Improved VPN connection establishment with Central Locks that have many connected Locks
• Lock is now removed from the Key UI immediately if the Lock’s serializations are reset
• Notification is now shown if a Master Key removes access to Locks from a Sub Key
• Processing of new Locks is now indicated on the UI
• Network adapter driver updated on Windows Vista and later for better reliability
• Support for OS X 10.11 El Capitan
• Key SW can now be installed to Applications folder on OS X
• Fix for an issue where Backup Keys were serialized as Layer 2 instead of Layer 3
• Fix for an issue where the UI sometimes flickers on certain Windows machines
• Fix for an issue where VPN connection might not establish when two Keys are plugged into the computer
• Fixes for installation issues on OS X

 

Version 2.12.3 (Windows, macOS)

10 February 2015

New features and enhancements

• Sub Keys can now be removed
• When creating a Sub Key it can now be allowed for the Sub Key to accept serializations also from other Master Keys
• Locks can now be hidden on the UI
• Support for closing Tosibox Key safely and ejecting the Key
• Support for AES ciphers (requires support from Lock or Central Lock)
• Improved reliability of Backup Key functionality
• Lock names are now copied when creating a Backup Key
• Lock name is now sent to Central Lock during serialization
• Software updates are now cryptographically verified on OS X
• Fix an autostart issue on OS X 10.10 Yosemite
• Minor layout fixes for computers and devices with larger font sizes (e.g. MS Surface Pro)
• Fix an issue where the Sub Key name was not saved on the Master Key
• Fix an issue where Tosibox Key might not start up properly after the very first installation on OS X

 

Version 2.11.4 (macOS)

10 February 2015

Enhancements

• Software updater logic changed to enable updating to v2.12
• Software updates are now cryptographically verified on OS X

 

Version 2.11.2 (macOS)

19 October 2014

Enhancements

• Support for OS X 10.10 Yosemite
• Improved reliability of Backup Key functionality
• Lock name is now sent to Central Lock during serialization

 

Version 2.11.0 (Windows, macOS)

28 July 2014

New features and enhancements

• Improved compatibility with Microsoft Windows firewall
• Layer 3 is now the default connection type for new Key serializations
• Mac OS X version is now signed
• Reliability and security improvements

 

Version 2.10.1 (Windows, macOS)

11 March 2014

Enhancements

• Sub Keys can now be organized into groups
• Support for serializing Locks with Central Lock using Layer 3 connection type

 

Version 2.8.2 (Windows, macOS)

1 November 2013

Enhancements

• Support for Mobile Clients
• New Key Manager view for managing Backup and Sub Keys and Mobile Clients
• Support for showing the list of changes in a Key software update

 

Version 2.7.2 (Windows, macOS)

24 October 2013

Enhancements

• Fix an issue with incorrect fonts on OS X 10.9 Maverics
• Fix an issue on OS X with Layer 2 DHCP

 

Version 2.7.1 (Windows)

22 October 2013

Enhancements

• Fix an issue with Windows XP compatibility

 

Version 2.7.0 (Windows, macOS)

22 October 2013

New features and enhancements

• Support for connecting to Locks locally when they are in the same network
• Support for Layer 3 connection type
• Improved detection of connection problems
• Locks are now sorted alphabetically
• Fix an issue where software update might have failed if the main window was closed
• Lock names are now copied to Sub Key during physical serialization