This means: If you change or reinstall your computer/laptop, the tools will no longer be installed. The University Computer and Media Center (URMZ) now points this out and advises the following alternative: You can activate the Cisco Webex function add-in for your account via Outlook on the web (Exchange). When Outlook is started, the integration is then loaded directly from the server. You start the administration of the add-ins via Optionen --> Allgemein.