How to install Cipher Client on Fabric

Before you start

Check which Minecraft Java Edition version you want to play. Cipher Client 1.2.0 has a separate JAR for 1.21.11, 26.1.2, 26.2 and 26.3, and each JAR only works on the version in its name.

The official Minecraft Launcher provides the right Java version automatically. Third-party launchers such as Prism or MultiMC may ask you to select Java 21 or Java 25 yourself.

Install Fabric Loader

1. 01

   Download the Fabric installer

   Get the official installer from fabricmc.net.

2. 02

   Select your Minecraft version

   Choose the same version as your Cipher Client JAR and a Loader version that meets the minimum: 0.18.4 for 1.21.11, 0.19.3 for 26.1.2, 0.19.5 for 26.2 and 26.3.

3. 03

   Create the profile

   Click Install. A new Fabric profile appears in the Minecraft Launcher. Start it once so the game folders are created, then close the game.

Add Fabric API

Cipher Client depends on Fabric API. Download the Fabric API file for the same Minecraft version from its official project page on Modrinth or CurseForge and put it in your mods folder. The minimum versions are 0.141.3+1.21.11, 0.151.0+26.1.2, 0.160.0+26.2 and 0.160.5+26.3.

Can't find the folder? It is %appdata%\.minecraft\mods on Windows, ~/Library/Application Support/minecraft/mods on macOS and ~/.minecraft/mods on Linux. See where the Minecraft mods folder is for launcher-specific paths.

Add the Cipher Client JAR

Open the official download page, choose the card with your Minecraft version and save the JAR. Optionally compare its SHA-256 checksum with the value on the page. Move the JAR into the same mods folder as Fabric API.

First launch

Start the Fabric profile from the launcher. Once you are in a world or on a server, press Right Shift to open the Cipher Client menu. From there you can search modules, open their settings with the ⚙ icon, pin favourites with ☆ and set keybinds.

Two things are worth checking on first launch: Settings → Crash Guard, which is on by default, and Settings → Telemetry → Report Usage, where you can switch off the usage report (see what it contains). Bind a panic key in Settings if you want to switch every module off at once.

Update to a new version

Cipher Client checks once per launch whether a newer version exists for your Minecraft version and shows a one-time notice in game. To update:

1. 01

   Download the new JAR

   Get the file for your Minecraft version from the download page.

2. 02

   Remove the old JAR

   Delete the previous cipherclient-… JAR from your mods folder so Fabric does not report a duplicate mod.

3. 03

   Add the new JAR and start the game

   Your settings, profiles and keybinds stay as they were.

Prefer no notices? Switch off Settings → Updates & Community → Check for Updates.

Fix common errors

Still stuck? Read why a Fabric mod is not loading or ask on Discord with your Minecraft, Loader, Fabric API and Java versions and the error from logs/latest.log.

Common questions

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