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How to Install Mods on Forge and Fabric

Complete guide to uploading mods to your Forge or Fabric Minecraft server. Includes the difference between mods and plugins and how to avoid conflicts.

By Tech Team··2 min read
How to Install Mods on Forge and Fabric

⚙️ Mods vs Plugins: what's the difference?

Plugins are exclusive to servers like Paper/Purpur and only modify the server side. Mods (Forge/Fabric) modify the game deeply and in most cases the client must have them installed too. There are exceptions like optimization mods that only go on the server.

📦 1. Make sure of the correct server type

In the panel, go to Startup and confirm your server is Forge or Fabric. You can't use Forge mods on a Fabric server and vice versa.

🔍 2. Download the mods

The most reliable sites for mods are:
  • CurseForge.com — The largest Minecraft mod library.
  • Modrinth — Excellent for Fabric mods, very up to date.
Make sure to download the correct mod version for your Minecraft version and for your server type (Forge or Fabric).

🗂️ 3. Upload the mod to the /mods folder

In the panel, go to Files and navigate to the /mods folder. If it doesn't exist, create it. Upload the mod's .jar file. If the mod has dependencies (stated in its description), upload those files to the same folder too.

🔄 4. Restart and verify

Restart the server. The first time a new mod loads it may take longer than usual. Check the console to confirm there are no errors. If you see Mod loaded successfully or similar, all is well!

💻 5. The client also needs the mods

If the mod modifies the game visually or adds new blocks/mechanics, your players also need to install it in their Minecraft client using the Forge/Fabric Launcher. Share exactly the same mod version with them.

⚠️ Resolving conflicts

  • If the server won't start, disable the mods one by one (renaming them to .disabled) until you find the problem.
  • Always check that all mods are compatible with each other. CurseForge and Modrinth usually list known incompatibilities.
  • Mods that change world generation can corrupt existing worlds. Always make a backup before installing this kind of mod.
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