Upgrading Your HTTP License Server
The goal of the following procedure is to help you minimize the downtime
      when you upgrade the HTTP License Server to its latest version:
  - Access the license server by following the link provided by the Tomcat Web Application Manager page. If prompted for authentication, use the admin credentials.
 - Click the View license key link and copy the displayed license key to a file for later use.
 - Go to the Tomcat Web Application Manager page, log in with the user you configured with the admin role, and Undeploy the license server.
 - Download the Web Archive (WAR) distribution of HTTP license server.
 - Deploy the downloaded license server.
 - Access the license server by following the link provided by the Tomcat Web Application Manager page. If prompted for authentication, use the credentials configured for the admin user.
 - Paste your license key into the form and register it.