Fabric 20w14infinite Server Jar Download

Experimental — snapshot Official source

The Fabric server launcher for Minecraft 20w14infinite uses Fabric Loader 0.20.1 and installer 1.1.2; on first start it downloads the vanilla 20w14infinite server from Mojang. It requires Java 8 or newer.

Download

Download Fabric server launcher178 KB

Downloads from meta.fabricmc.net — Official — FabricMC.

The upstream does not publish a checksum for this file. MCJarHub computes a SHA-256 for such files on a schedule and shows it here once available — see how we source & verify.

Source: Official — FabricMC No checksum published yet Last checked: 28 Oct 2026, 12:46 UTC Report a problem

Version facts

Minecraft release date	1 Apr 2020
Channel	Preview (april)
Required Java	Java 8 or newer · Temurin 8
Fabric Loader	0.20.1
Fabric installer	1.1.2
Fabric API (mod)	0.5.7+build.2-20w14infinite
File size	178 KB
Licence	Apache-2.0
Upstream project	fabricmc.net

What changed

Fabric Loader 0.20.1 release notes What's new in Minecraft 20w14infinite (Minecraft Wiki)

Compatibility

Loads Fabric mods for Minecraft 20w14infinite; most need Fabric API 0.5.7+build.2-20w14infinite in the mods/ folder.

Players need a Minecraft: Java Edition 20w14infinite client on the same version.

Minecraft 20w14infinite in other server software

Snapshot Quilt

Known issues & safety notes

Preview builds are experimental: they can corrupt or irreversibly upgrade worlds, and most plugins and mods do not support them yet. Test on a copy of your world.
Known issues: search Fabric's issue tracker for 20w14infinite

How to set up Fabric 20w14infinite

Install Java 8 or newer (e.g. Eclipse Temurin) and check it with java -version.
Download the Fabric server launcher above (about 178 KB) into an empty folder.
Start it with the script below. On the first start the launcher downloads the vanilla 20w14infinite server from Mojang and the Fabric libraries — this needs internet access.
Accept Mojang's EULA in eula.txt (eula=true) and start again.
Put mods into mods/. Most mods need Fabric API 0.5.7+build.2-20w14infinite there too.

Linux / macOS — `start.sh`

#!/bin/sh
# start.sh — Fabric 20w14infinite
cd "$(dirname "$0")"
JAVA_MAJOR=$(java -version 2>&1 | awk -F'"' '/version/ {split($2, v, "."); print (v[1] == "1") ? v[2] : v[1]}')
if [ "$JAVA_MAJOR" -lt 8 ] 2>/dev/null; then
  echo "Java 8 or newer is required (found Java $JAVA_MAJOR)."
  exit 1
fi
java -Xms6G -Xmx6G -jar fabric-server-mc.20w14infinite-loader.0.20.1-launcher.1.1.2.jar nogui

Windows — `start.bat`

@echo off
REM start.bat — Fabric 20w14infinite
REM Needs Java 8 or newer: run "java -version" to check.
java -Xms6G -Xmx6G -jar fabric-server-mc.20w14infinite-loader.0.20.1-launcher.1.1.2.jar nogui
pause

Modded servers need more memory: 6–8 GB for a light modpack, 8–12 GB or more for large packs. Leave 1–1.5 GB for the operating system. How much RAM?

Docker

docker run -d -p 25565:25565 -e EULA=TRUE -e TYPE=FABRIC -e VERSION=20w14infinite --name mc itzg/minecraft-server

Uses the community itzg/minecraft-server image, which downloads the file itself.

Upgrading

FAQ

What Java version does Fabric 20w14infinite need?

Fabric 20w14infinite needs Java 8 or newer. Running it on an older Java fails with an UnsupportedClassVersionError mentioning class file version 52.0.

Is Fabric 20w14infinite safe for my survival world?

Only on a copy. Preview versions are experimental and upgrade worlds irreversibly; keep a backup and don't switch a live world to a snapshot, pre-release or release candidate.

Why is the Fabric server file so small?

It is only a launcher. On the first start it downloads the vanilla Minecraft 20w14infinite server from Mojang and the Fabric Loader libraries.