Learn how to fix The registry refers to a nonexistent Java Runtime Environment installation or the Runtime is corrupted error on Windows 11/10.

Is Java installed? To run the Java command, first you must have Java installed. This means either the Java Runtime Environment (JRE) or the full Java Development Kit (JDK).

This should address any configuration problems and update the Java Runtime Environment to the latest version. First, uninstall Java as you would remove any other software on your PC.

JAVA_HOME is an operating system environment variable that directs a user to the file system location where the JDK or JRE was installed.