---
title: "Quilt Loader in Prism Launcher — Installation & Mod Setup"
description: "How to install and update Quilt Loader (1.14 – 1.21+) in Prism Launcher on Windows. Core dependency: Quilted Fabric API (QFAPI) / QSL."
canonical: https://prismlauncher.ink/loaders/quilt-loader
updated: 2026-10-17
---

# Quilt Loader in Prism Launcher

Fork of Fabric with extended standard libraries that installs in one click from the Prism Launcher Edit Instance window. Supports Minecraft 1.14 – 1.21+.

## Facts (2026-10-17)

- **Mod Loader:** Quilt Loader
- **Minecraft Versions:** 1.14 – 1.21+
- **Core Dependency:** Quilted Fabric API (QFAPI) / QSL
- **Best For:** Running Quilt-specific mods alongside compatible Fabric mods in a single instance

## Installing Quilt Loader in two clicks

Fork of Fabric with extended standard libraries that installs in one click from the Prism Launcher Edit Instance window.

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 Quilt** on the right-hand sidebar.

## Adding mods and dependencies

- **Core requirement:** Quilted Fabric API (QFAPI) / QSL. Open the **Mods** tab and click **Download mods** to grab dependencies from Modrinth or CurseForge.
- **Best use cases:** Running Quilt-specific mods alongside compatible Fabric mods in a single instance.
- **Get the launcher:** Download the Windows installer or portable build at [/download](https://prismlauncher.ink/download).

## FAQ

### How do I update Quilt 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 Quilt 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](https://prismlauncher.ink/java).

## Related

- [Prism Launcher Mod Loaders](https://prismlauncher.ink/loaders)
- [Complete Minecraft Java Version Chart (Java 8, Java 17 & Java 21)](https://prismlauncher.ink/java/which-java-version-for-each-minecraft-version)
- [Prism Launcher Modpacks & Mod Downloader](https://prismlauncher.ink/modpacks)
- [How to Fix Minecraft Exit Code 1 & Exit Code -1 in Prism Launcher](https://prismlauncher.ink/howto/fix-minecraft-exit-code-1-prism-launcher)
- [Fabric Loader in Prism Launcher](https://prismlauncher.ink/loaders/fabric-loader)

## Download

Free and open source: [Download Prism Launcher](https://prismlauncher.ink/download)

Markdown mirror: https://prismlauncher.ink/loaders/quilt-loader.md