How to Install Fabric Mods 1.21
The fastest way to install Fabric on Minecraft 1.21 and load cheat clients like Vape V4, Krypton, Argon, 4E, Novoline and Rise. Works with Minecraft Launcher, Modrinth, Lunar Client and Feather.
- 1
Install Java 21
Minecraft 1.21+ requires Java 21. Download it from Adoptium (Temurin 21) or let the Minecraft Launcher auto-install the correct runtime.
- 2
Download Fabric Loader
Go to fabricmc.net/use and download the installer. Pick Minecraft version 1.21 (or 1.21.1 – 1.21.11) and the latest Loader version, then click Install.
- 3
Launch once from your launcher
Open Minecraft Launcher, Modrinth, Lunar or Feather. Select the new 'fabric-loader-1.21.x' profile and click Play once so the folders are created.
- 4
Open the .minecraft/mods folder
Windows: %appdata%\.minecraft\mods · macOS: ~/Library/Application Support/minecraft/mods · Linux: ~/.minecraft/mods. Create the mods folder if it doesn't exist.
- 5
Drop the .jar files in
Place Fabric API and your client .jar (e.g. Vape-V4-v4.10.2-mc1.21.jar) into the mods folder. Do NOT extract the jars.
- 6
Launch with the Fabric profile
Start Minecraft again with the Fabric 1.21 profile. Your client will inject on launch — press RSHIFT (or the client's default) to open the menu.
Supported launchers
- · Minecraft Launcher (official)
- · Modrinth App
- · Lunar Client
- · Feather Client
Ready to install a client?
Pick a Fabric client and drop it straight into your mods folder.
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