How to Install Cauldron on Your Server

Published June 9, 2026 · By Host Havoc Technical Support Team

Cauldron is a hybrid server platform that lets you run both Forge mods and Bukkit plugins on the same Minecraft server. It supports Minecraft versions 1.6.4 and 1.7.10 only. For newer versions, consider alternatives like Mohist. See Forge vs. Cauldron for a full comparison.

Before you start: Cauldron requires you to run an installer on your own computer first, then upload the resulting files to your server via FTP.

Choose your Minecraft version

Determine the version of Minecraft you need to run. Most mods and modpacks list the required version in their documentation.

Download the Cauldron files

  1. Visit the Cauldron download page on SourceForge for your target version (for example, 1.7.10).
  2. Download the installer JAR, the server JAR, and CauldronBukkit for your chosen version.

Run the installer locally

  1. Run the installer JAR on your computer. Install it to a folder on your Desktop or another convenient location.
  2. Run the installer two more times to ensure all library files download correctly. Some libraries may be missed on the first run.
  3. Place the other downloaded files (server JAR and CauldronBukkit) in the same folder as the installation.

Upload the files to your server

  1. Connect to your server via FTP using the FTP client guide.
  2. Upload all contents of the local installation folder to your server's root directory.

Set the JAR file in Multicraft

  1. Log into the Minecraft panel.
  2. On your server overview, find the JAR file setting.
  3. Set it to the exact name of the Cauldron server JAR, for example: cauldron-1.7.10-1.1217.07.0-server.jar.

Start the server

Click Start. The server loads Cauldron, and you can add mods to the mods folder and plugins to the plugins folder.

Troubleshooting

Server fails to start with library errors. Run the installer one or two additional times on your local machine to fetch any missing libraries, then re-upload the updated library files.

JAR name does not match. Connect via FTP, find the exact filename of the Cauldron server JAR, and paste that name into the Multicraft JAR field.