This document provides a user guide for the License4J Auto License Generation and Activation Server. The server handles requests for auto license generation, activation/deactivation, modification, availability checks, and online key validation. It has roles that can be enabled/disabled for license generation, activation, deactivation, modification, online key validation, availability checks, and sending product updates/messages to licensees. The server is deployed as a web application that can run on load-balanced or fail-over clusters.