Starting with Jenkins 2.357 and LTS 2.361.1, Java 11 became a core requirement for running the Jenkins controller and agents. While more recent versions have shifted toward Java 17 and 21, Java 11 remains a common environment for many enterprise legacy systems.
Before downloading, ensure you select a version that supports your Java 11 environment. According to the Jenkins Java Support Policy , compatibility is as follows: download jenkins for java 11
If you specifically need to run Jenkins on Java 11, you must download a compatible legacy LTS version from the official archives. Java Support Policy - Jenkins Starting with Jenkins 2