NeoForge 26.1 Snapshot 4 Server Download

Experimental — snapshot Official source

NeoForge 26.1.0.0-alpha.8+snapshot-4 is the newest NeoForge build for Minecraft 26.1 Snapshot 4, installed on a server with the official installer (neoforge-26.1.0.0-alpha.8+snapshot-4-installer.jar). It requires Java 25 or newer.

Download

Download installer (neoforge-26.1.0.0-alpha.8+snapshot-4-installer.jar)10.5 MB

Downloads from maven.neoforged.net — Official — NeoForged.

SHA-256 · published by NeoForged: 9d3a136f1104fca2c3dd62f999683b501465e0ca6d24f85de3267ccfea480669
SHA-1 · published by NeoForged: 171cafc26fda04dcaf71495f369e3280cb2ea396

How to verify this file on Windows, macOS and Linux.

Source: Official — NeoForged SHA-256 shown below Last checked: 28 Oct 2026, 12:47 UTC Report a problem

Version facts

Minecraft release date	20 Jan 2026
Installer file date	21 Jan 2026
NeoForge version	26.1.0.0-alpha.8+snapshot-4
Channel	Preview (snapshot) · build channel beta
Required Java	Java 25 or newer · Temurin 25
File size	10.5 MB
Licence	LGPL-2.1
Upstream project	neoforged.net

What changed

What's new in Minecraft 26.1 Snapshot 4 (Minecraft Wiki)

Compatibility

Loads NeoForge mods built for Minecraft 26.1 Snapshot 4 (put them in mods/).

Players need a Minecraft: Java Edition 26.1 Snapshot 4 client on the same version.

Minecraft 26.1 Snapshot 4 in other server software

Snapshot Fabric 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 NeoForge's issue tracker for 26.1-snapshot-4

How to set up NeoForge 26.1 Snapshot 4

Install Java 25 or newer (e.g. Eclipse Temurin) and check it with java -version.
Download the official installer neoforge-26.1.0.0-alpha.8+snapshot-4-installer.jar into an empty folder.
Run java -jar neoforge-26.1.0.0-alpha.8+snapshot-4-installer.jar --installServer. It downloads the Minecraft server and libraries into the folder.
Start the server with the generated run.sh (Linux/macOS) or run.bat (Windows). Set memory in user_jvm_args.txt, e.g. -Xmx6G.
Accept Mojang's EULA in eula.txt (eula=true), start again, and put mods into mods/.
You can delete the installer and installer.log afterwards.

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=NEOFORGE -e VERSION=26.1-snapshot-4 --name mc itzg/minecraft-server

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

Upgrading

FAQ

What Java version does NeoForge 26.1 Snapshot 4 need?

NeoForge 26.1 Snapshot 4 needs Java 25 or newer. Running it on an older Java fails with an UnsupportedClassVersionError mentioning class file version 69.0.

Is NeoForge 26.1 Snapshot 4 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.

Is the NeoForge installer the server jar?

No. The installer (neoforge-26.1.0.0-alpha.8+snapshot-4-installer.jar) sets up the server: run it with --installServer, then start the server with run.sh or run.bat.