Product Licensing

The access to the software is managed by a cloud-based licensing solution. Tower Numerics uses concurrent licensing. The software can be installed on multiple machines, and the concurrency is controlled by a cloud license server.

The software may be run in two modes: connected and detached. In the connected mode Internet access is required for the program to operate. In the detached mode the software uses a local license and no Internet connectivity is required. Switching between different modes is instantaneous, without a need to restart the program.

Installation and Licensing Instructions

tnxTower Installation and Licensing Instructions

Description: tnxTower installation and licensing, including an overview of the cloud license server functionality.
File: tnxTower_Installation_and_Licensing.pdf

tnxTower Installation Packs

Version, release date: January 24, 2024
tnxTower Download Page

tnxCable Installation Packs

Version 2.1.0, release date: September 4, 2014
File: tnxCable 2.1.0 Standalone (12.1 MB)
File: tnxCable 2.1.0 Network (149.8 MB)

tnxFoundation Installation Packs

Version beta, release date: March 29, 2024
tnxFoundation Download Page

For information on upgrading from RISATower, please email us at

TNX Key Manager

Description: Utility reads and enables upgrading of USB hardware key. The Sentinel Protection Installer 7.5.0 or newer is required to run TNX Key Manager.
File: TNX_KeyManager.exe (2.5 MB)

Updated Sentinel System Driver Installer 7.5.8

Description: The ZIP file contains an updated Sentinel System Driver Installer. This update is Windows Server 2012 and Windows 8 compliant.