This is a robust and proven system used by many software vendors throughout the world, and forms the foundation of the TSLS. Perpetual Licensing of the Tekla Structural Analysis & Design (A&D) programs is handled by a component called the Tekla Structural License Service (TSLS) which uses a (third-party) licensing system called Sentinel RMS produced by Thales. Please see the sections below for more information about what is happening to require this update and why. Note that this issue only relates to perpetual licenses and Server licensing using Sentinel RMS - it does NOT relate to subscription licenses and Tekla Online Licensing.Ī new version of the Tekla Structural License Service which incorporates Sentinel RMS 9.7 is available now - for more information on this see the 2021 Release Installation and Licensing FAQ's page. This update of the license server is not optional - if it is not performed, server licensing will not work reliably, if at all, when the 2021 Releases are installed. For Server licensing using Sentinel RMS, your License Server MUST be updated accordingly before installing the 2021 Releases on clients. ⚠ Please be aware that the Tekla Structural Design Product Releases for 2021 (comprising Tekla Structural Designer, Tekla Tedds, Tekla Portal Frame Designer and Tekla Connection Designer) include a new version of the Tekla Structural License Service incorporating Sentine RMS version 9.7.