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How To Install Minecraft Mods with Forge (Client Side)

Last modified on Mar 23, 2022 in General

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Having a modded Minecraft server is a great way to customize your gameplay experience. However, playing with mods is not as simple as just uploading them to your server. For every mod that goes into your server, it has to be run client-side. Minecraft by default does not run mods so you need to use a mod loader, Forge. There are multiple different ways you can add mods whether you are just installing Forge and the mods manually to Minecraft or if you are using a launcher such as the Twitch Desktop App. Adding mods to your Minecraft client can be tricky, however, we will be walking you through each step of the process.

Keep in mind that in order for mods to work, you must be running Forge. You can find our guide on installing Minecraft Forge here.

Adding mods to Minecraft Forge

This section only covers how-to on the default Minecraft launcher with Forge installed.

Downloading mods

  1. You need to get the mods from CurseForge or the mod author’s official site. Doing this ensures that you won’t get corrupted files or viruses.
  2. Once you decide on a mod you want, click the name to open the mod page.
  3. Open the Files tab to view the versions. To the right of the version you want, press download. It’s best to download the latest recommended update for your version of Minecraft.
  4. Head back to the mods page and open the Relations tab. This is very important as these are the mods you need for it to work correctly. If you don’t download the dependencies, the mod will not function properly or can cause the game to crash.



  1. Make sure your Minecraft client is closed.
  2. Press the Windows Key (Start)
  3. Type in %appdata% and press enter.
  4. Open the .minecraft folder and then enter the mods folder.
  5. From here, just drag in the mods that you wish to add.
  6. Open Minecraft again and click Play, and the mods should now be loaded. You can check this by clicking the Mods tab on the Minecraft homepage.



  1. Make sure your Minecraft client is closed.
  2. At the top of your Mac, click the Go tab and then “Go to Folder…”.
  3. Type in ~/Library/Application Support/minecraft and click Go.
  4. Enter the mods folder and then drag in the mods.
  5. Open Minecraft and click Play, and the mods should now be loaded.


Common Issues

Minecraft Crashes on startup

Minecraft crashing on startup can be a result of a variety of different issues. If this is happening to you, you need to check that all of your mods are for the correct version of Forge, there are no duplicate mods, and that you are not missing any dependencies. You can also test to see if it is the mods crashing the game by launching it without any mods loaded. If you still can’t find out which mod is the issue, you can add the mods back one at a time. This may take a bit of time but it is effective.

Getting Mod Rejections when trying to join a server

Having a mod rejection either means that the mod is not the same version as the one from the server, or that you are missing a mod on your Minecraft client that is on your server or vice versa. Double-check that your mods folder from client-side matches with the server-side mods folder with the exception of client-side only mods.

This server has mods that require FML/Forge to be installed on the client

This means that Forge is not on your Minecraft client at all. This could be that you are just launching the wrong version. Close the client and double-check that it is running the Forge version, if you don’t see Forge under the versions you will need to reinstall it.

Related Content

How to add mods to your server
How to add plugins through FTP
How to add plugins through the panel
How to manually install a modpack
How to create a modpack

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