How to Download and Install Minecraft Forge Mod Loader (2025)

learn how to download and install forge to mod minecraft in 2025

Getting Started with Forge: What You Need to Know

If you’re looking to enhance your Minecraft experience with mods, learning how to install Minecraft Forge is the first step. Forge is the most popular platform for managing and running mods in Minecraft, allowing you to customize gameplay with ease. Whether you’re adding new features, tools, or entirely new mechanics, Forge simplifies the process and makes modding accessible for players of all skill levels. In this guide, we’ll walk you through everything you need to know about downloading and installing Forge safely and efficiently, so you can start enjoying a fully customized Minecraft experience. Let’s begin!

⚠️ Important: Installing Forge will require an instance of Java in your system.

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Step 1: Download Minecraft Forge

Before we install Forge for Minecraft, we need to download the necessary file, which can be access from the official Forge site or using the button below:

button to download and install forge from the forge site

When you’re on the Forge website, navigate to the left-hand menu and choose the Minecraft version you want to mod

  • Click the Installer button to begin the download of the installer file.

💡 Tip: Click the “+” sign to expand the list and reveal more Minecraft versions.

Forge website showing Minecraft version selection and Forge installer download option for newest available version

  • Right after you hit “Installer“, you will be redirected to a short ad page, wait around 5 seconds and click the button labeled as Skip in the top right.
Forge installer download page showing the "Skip" button to bypass ads and proceed with the download.

This will begin the download of the forge-installer.jar file.

⚠️ Important: Files with the name extension “.jar” will require Java to open.

Recent download history showing the Forge newest available version installer jar file successfully downloaded.

Once the Forge installer has finished downloading, it’s time to proceed with the installation. Follow the steps below to move forward and get Forge set up for your Minecraft mods.

Step 2: Install Minecraft Forge

With the Forge installer ready, you’re just a few clicks away from setting it up. Let’s get started!

  • Double-click the Forge installer file to open it and begin the installation process.

💡 Tip: If the Forge installer doesn’t open, you may need to install Java on your computer to proceed.

Forge installer interface showing the "Install client" option selected and the installation directory highlighted with the "OK" button ready to proceed.

  • Select the “Install client” option, confirm your Minecraft installation folder (which is usually pre-selected by default), and then click “OK” to start the installation.
Forge installation process showing the progress bar and log details for version 1.21.4 being installed.

  • Wait a few seconds for the installation process to complete. Once finished, a confirmation pop-up will appear, letting you know that Forge has been successfully installed. Click “OK” to close the installer.
Forge installation completion message confirming the successful installation of version 1.21.4 and downloading of 14 libraries.

You’ve successfully installed Forge! You’re ready to play Minecraft with mods. Proceed to the next step to start adding mods to Minecraft Java.

Step 3: Use Forge with Mods in Minecraft

After successfully installing Forge, it’s time to add mods to your Minecraft game.

  • Open your Minecraft Launcher.

⚠️ Important: After installing Forge, it will automatically be set as the default Minecraft version in your launcher.

Minecraft Launcher displaying the Forge version 1.21.4 selected and ready to play.

  • Click on the “Installations” tab at the top of the Minecraft Launcher to view all your custom installations.
  • Select the “Modded” option to show Forge in the list.
Minecraft Launcher "Installations" tab showing the Forge version 1.21.4 selected under the "Modded" filter

  • Hover over Forge, and click the folder icon installation folder icon for forge within the minecraft launcher to open the installation folder.
Minecraft Launcher showing the option to open the installation folder for Forge newest available version.

  • In the installation folder (.minecraft), create a new folder and name it “mods“.

⚠️ Important: If a “mods” folder already exists, remove outdated or incompatible mods to ensure compatibility with your new Forge installation.

File explorer showing the creation of a new "mods" folder inside the .minecraft directory for adding Minecraft mods.

  • Open the “mods” folder and add the Minecraft mods you plan to use. Double-check that they are compatible with your Forge version.
Mods folder inside the .minecraft directory showing added mod files compatible with Forge newest version

  • Close the folder, return to the Minecraft Launcher, and open your Forge instance.
Minecraft Launcher showing the "Play" button selected for the newest available Forge version to start the game with mods.

  • You may encounter a pop-up about player safety features. Take a moment to read through it if you’d like, then check the box to acknowledge the risks and click Play” to proceed.
Minecraft Launcher showing a player safety warning pop-up before launching a modded Java Edition installation, with the "Play" button highlighted.

When the game launches, you’ll notice a new “Mods” option in the main menu. Click on it to view and manage all the mods you currently have installed.

Minecraft main menu with Forge installed, showing the new "Mods" button highlighted for accessing installed mods.

With Forge successfully installed, and your mods loaded, you’re ready to transform your Minecraft world. Here’s a glimpse of what a fully modded experience can look like!

A vibrant modded Minecraft landscape featuring lush greenery, tall trees, and detailed textures enhanced by mods.
Biomes O’ Plenty mod

That’s it! You’re now set to play Minecraft with mods using Forge in 2025. With Forge successfully installed, you can start exploring and enjoying a customized gameplay experience.

Troubleshooting Forge

How to Fix ‘Error Loading Mods’ in Forge Minecraft

If you’re facing the “Error Loading Mods” message when launching Minecraft with Forge, don’t worry—it’s an easy fix! Simply, close the game, open your “mods” folder and remove all the mods listed in the crash report. Relaunch the game, and this should resolve the error.

Minecraft error screen showing "Error loading mods" with a list of invalid mod files and options to open the mods folder or latest log for troubleshooting.

How to Fix ‘UnsupportedClassVersionError’ in Minecraft Forge

This error typically means that the Java version installed on your system doesn’t match the version required by the Forge version you’re using.

Here’s a quick reference list to help you choose the correct Java version based on your Minecraft Forge version:

  • Forge 1.20.5 and above: Requires Java 21
  • Forge 1.17 to 1.20.4: Requires Java 16
  • Forge 1.13 to 1.16.5: Requires Java 8 or Java 11
  • Forge 1.12.2 and below: Requires Java 8

Ensure you download and install the correct version of Java based on the Minecraft Forge version you’re using.

How to Fix Forge Not Showing Up in the Minecraft Launcher

This issue can happen if the Forge installation didn’t complete correctly or if the launcher is not detecting the installed Forge version.

  1. Restart the Minecraft Launcher: Close and reopen the launcher to refresh the list of installations.
  2. Check the Installations Tab: Make sure the “Modded” option is selected by navigating to the “Installations” tab in the Minecraft launcher.
  3. Reinstall Forge: If Forge still doesn’t appear, reinstall it and double-check that you’re using the correct Minecraft directory.
  4. Update Your Launcher: Ensure you’re using the latest version of the Minecraft Launcher, as outdated launchers might not recognize new Forge installations.

Forge FAQs

What is Minecraft Forge?

Minecraft Forge is a modding platform that enables players to install, manage, and run mods seamlessly. It provides a framework for mod developers to create custom content and ensures compatibility between mods. Forge is essential for customizing Minecraft with new features, tools, and biomes, making it the preferred choice for modded gameplay.

Can You Use Forge and Fabric Together?

Forge and Fabric are two distinct mod loaders for Minecraft and are not inherently compatible. However, in certain situations, you can use both by adding extra mods and configurations. This setup is more advanced and may not always be available for the latest versions of the mod loaders or mods themselves.

Can You Use Forge and OptiFine Together?

Yes, you can use Forge and OptiFine together in Minecraft! To set it up, first install Forge, then follow our guide on How to Install OptiFine to add it to your “mods” folder.