Startup Issue with Minecraft - Issues with Java allowing start

System Information

Field Value
Operating System Windows - Windows 11 Home on x86_64
Product AMP ‘Callisto’ v2.5.0.4 (Mainline)
Virtualization None
Application Minecraft
Module MinecraftModule
Running in Container No
Current State Failed

Problem Description


Exception in thread “main” java.lang.UnsupportedClassVersionError: net/minecraft/bundler/Main has been compiled by a more recent version of the Java Runtime (class file version 61.0), this version of the Java Runtime only recognizes class file versions up to 52.0

Do I need to downgrade my java to run this?

Reproduction Steps

  • Confirmed IP Port
  • Log files for errors
  • Confirmed java error in logs
  • Confirmed Java is on newest version

If try swapping the Java version to Java 8, wait a couple seconds, then swap it back to Java 17

This topic was automatically closed 30 days after the last reply. New replies are no longer allowed.