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NeoAuthMinecraft mod for 1.21.1

Authenticate and re-validate your session

client onlynewest supported 1.21.1Management
Latest version
1.0.1
Loaders
Forge, NeoForge
Licence
MIT
Downloads
51.1k
Updated
10 mo ago
Available on
Modrinth
Space NodePartner

Host NeoAuth servers

One click and NeoAuth is installed with the right loader, on hardware built for it.

  • 1.21.1
  • Forge
  • NeoForge
  • One click mod install
  • Loader matched for you
  • Ryzen CPUs
  • NVMe SSD
Deploy a serverFrom €0.90 per GB

Screenshots

Click a screenshot to open it. Screenshots are served from the author’s own host and belong to them.

Minecraft versions

Every version NeoAuth declares support for, newest first, with the Java runtime that version needs.

Other mods
MinecraftThroughJavaEvidenceReleased
1.21.1Forge, NeoForge21+declared8 Aug 2024
1.20.1Forge, NeoForge17+declared12 Jun 2023

Download

From NeoAuth’s own host. Nothing is re-hosted here.

1.0.1beta5 Oct 2025

NeoAuth-1.21.1-1.0.1.jar · 0.1 MB · for 1.21.1

Download latest
d8f372b942ef
Older versions3
  • 1.0.318 Dec 20241.20.10.0 MB23.9k downloads01ff177c2846Get
  • 1.0.217 Dec 20241.20.10.0 MB76 downloadsa2c58f4eed0dGet
  • 1.0.017 Nov 20241.20.10.0 MB4.7k downloads939cdea6f77aGet

Frequently asked

Does NeoAuth work on Minecraft 1.21.1?

Yes. 1.21.1 is the newest Minecraft version NeoAuth declares support for, and the claim comes from the author's own release metadata rather than from a compatibility list somebody maintains by hand.

Which Minecraft versions does NeoAuth support?

Everything the author has declared, from 1.20.1 up to 1.21.1. The full list is in the table above, with the Java runtime each version needs next to it.

Do I need to install NeoAuth on the client or the server?

The client only. There is nothing to install on the server, so it works on any server you can already join.

Which loader does NeoAuth need?

Forge, NeoForge. A build for one loader will not load on another, so this is the first thing to check before the Minecraft version.

Which Java version do I need for NeoAuth?

Java 21 or newer, because that is what the newest Minecraft release it supports requires. The requirement comes from the game rather than from the mod itself.

What licence is NeoAuth under?

MIT, as stated by the author on the platform we synced it from. Check the project's own page before redistributing or bundling it.

How do I install NeoAuth?

Install the matching loader first, then put the downloaded file in your mods folder and start the game. The loader, the mod and Minecraft all have to be on the same version, which is the usual reason a mod does not appear in game.

Where do I download NeoAuth safely?

From the author's own page on Modrinth, which is where the data here is synced from. MCReference never mirrors, re-hosts or repackages a file: every download button points at the original source, so you get exactly what the author published.

Works on the same versions

Ordered by how much of the recent Minecraft version coverage overlaps, not by popularity.

Last checked 6 d ago against Modrinth. We do not host files and we do not republish descriptions; every download link points at the author’s own release.

Is this information wrong or missing something? .