Run the installer you downloaded.
Once installed, you must tell your system (and exe4j) where to find it. Locate the Path : It is typically C:\Program Files (x86)\Java\jdk1.8.0_xxx Open Environment Variables Exe4j Java Home 32 Bit Jdk Download --BEST
Ensure your Java version matches your compiled code. If you compiled your JAR with Java 17, you cannot run it with a Java 8 32-bit JDK. Run the installer you downloaded