This guide will walk you through installing mods for Minecraft: Java Edition using our built-in Mod Manager tool. This makes modding simple, without needing to manually handle files. If you prefer, you can still upload and manage mods using our File Manager or SFTP options.
CLW provides a set of recommended packages for modding. If you attempt to install mods on a server build that is not intended for modding (for example, vanilla builds), we cannot provide support for any resulting crashes, instability, or performance issues.
Before beginning, ensure your server is stopped.


Once installation is complete, you’ll receive a notification in the Notification Center.
Don’t see the notification? Refresh your panel with Ctrl + F5 after about a minute.

After installation, start your server.
Encountering errors on startup? Make sure you selected a compatible Minecraft version. Learn more here.
Still getting errors? Verify that you are using the correct Java version. If needed, you can reset this by deleting the disable_prompt_for_java_version file in the File Manager, then restarting the server.
Once your Java version and Minecraft version match the requirements of your modpack, restart your server.
If issues persist:
Finally, join your server! Remember: your Minecraft client must match the server’s version and modpack.