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Fabric Loader in Prism Launcher

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Lightweight, modular mod loader that updates within hours of new Minecraft releases and powers the modern Sodium/Iris performance stack. Supports Minecraft 1.14 – 1.21.4+ (plus snapshots).

Mod Loader
Fabric Loader
Minecraft Versions
1.14 – 1.21.4+ (plus snapshots)
Core Dependency
Fabric API (fabric-api.jar)
Best For
Sodium + Iris shaders, lightweight QoL mods, fast snapshot updates, and low-end PC FPS boosts

Installing Fabric Loader in two clicks

Lightweight, modular mod loader that updates within hours of new Minecraft releases and powers the modern Sodium/Iris performance stack.

In Prism Launcher, you never need to download a separate loader installer JAR from a browser. Right-click your instance, select **Edit** → **Version**, and click **Install Fabric** on the right-hand sidebar.

Prism Launcher screenshot showing the modpack updating user-interface
Updating a pack happens in place, without reinstalling it by hand.

Adding mods and dependencies

Frequently asked questions

How do I update Fabric Loader to a newer version in Prism Launcher?

Open Edit Instance → Version, select the loader row, and click **Change version** on the right sidebar to pick the latest build.

Why did my Fabric Loader instance exit with code 1?

Check that your Java version matches your Minecraft version (Java 21 for 1.20.5+, Java 17 for 1.18–1.20.4, Java 8 for 1.16.5 and older) under Java Settings.

Get Prism Launcher

Windows, macOS & Linux

Free and open source. Sign in with the Microsoft account that owns Minecraft, then create your first instance.

Prism Launcher on Windows showing several modpacks and instances