How to Run a Minecraft JAR File (Client, Server & Mods)

Run any Minecraft JAR: launch the game, start a server with java -jar, and install Forge or Fabric mod JARs. Includes fixes for common errors.

Running the Minecraft Game (Client)

Installing and Running Mod JARs

Running a Minecraft Server JAR

Inspecting a Mod JAR Before Installing

Common Errors

Summary