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Sol's AuthLoginMinecraft mod for 1.21.1

A complete login/registration system for servers that require an additional layer of account security.

newest supported 1.21.1Utility QolServer Utility
Latest version
1.21.1 - v1.3: Fixes & Improvements
Minecraft
1.16.5 to 1.21.1
Java
Java 21+
Loaders
Forge, NeoForge
Licence
not stated
Downloads
4.6k
Updated
2 mo ago
Available on
CurseForge

Screenshots

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

Minecraft versions

Every version Sol's AuthLogin 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
1.16.5Forge, NeoForge8+declared14 Jan 2021

Download

From Sol's AuthLogin’s own host. Nothing is re-hosted here.

1.21.1 - v1.3: Fixes & Improvementsrelease17 Jul 2026

solsauthlogin-1.21.1-neoforge-1.21.1-1.3.jar · 93 KB · for 1.21.1

Download latest
0c5871c107ef…
Older versions20
  • 1.20.1 - v1.3: Fixes & Improvements17 Jul 20261.20.194 KB10b58b40d859…Get
  • 1.16.5 - v1.3: Fixes & Improvements17 Jul 20261.16.598 KB877f51ef016f…Get
  • NeoForge 1.21.1 - v1.2.28: RELEASE!23 Jun 20261.21.191 KB8 downloadsfd7ee32bb8f6…Get
  • 1.20.1 - v1.2.28: Gamemode Restore Fix25 May 20261.20.192 KB15 downloadsc677a4498c95…Get
  • 1.16.5 - v1.2.28: Gamemode Restore Fix25 May 20261.16.596 KB2 downloads711eb2f872b5…Get
  • 1.20.1 - v1.2.27: Login Auth-State Fix15 May 20261.20.192 KB47 downloads0c7ac9720d72…Get
  • 1.16.5 - v1.2.27: Login Auth-State Fix15 May 20261.16.596 KB2 downloadsf6556544ce55…Get
  • 1.20.1 - v1.2.25: Hotfix - Invisible Armor Stand13 May 20261.20.192 KB26 downloadsf359344259a5…Get
  • 1.16.5 - v1.2.25: Hotfix - Invisible Armor Stand13 May 20261.16.596 KBcd06a5af031f…Get
  • 1.20.1 - v1.2.2: Minor Fixes13 May 20261.20.193 KB7 downloadsb9853e69543c…Get
  • 1.16.5 - v1.2.2: Minor Fixes13 May 20261.16.597 KBaf93daac4337…Get
  • 1.20.1 - v1.2.1: HOTFIX, IMPROVEMENTS22 Apr 20261.20.193 KB4 downloadsec8fb01ad0d4…Get
  • 1.16.5 - v1.2.1: HOTFIX, IMPROVEMENTS22 Apr 20261.16.596 KB7989a7d5843d…Get
  • 1.20.1 - v1.2: NEW Auto-Login, Fixes & Improvements22 Apr 20261.20.191 KB5 downloads87fec4ba3a0f…Get
  • 1.16.5 - v1.2: NEW Auto-Login, Fixes & Improvements22 Apr 20261.16.595 KB2 downloadse2105f42132a…Get
  • 1.20.1 - v1.1.0: Release!30 Mar 20261.20.154 KB60 downloadsc3c86174ce76…Get
  • 1.16.5 - v1.1.0: Improvements + Fixes30 Mar 20261.16.553 KBda479e84c502…Get
  • solsauthlogin-1.16.5-1.0.5.jar26 Feb 20261.16.547 KB33 downloads612b3b6e689f…Get
  • solsauthlogin-1.16.5-1.0.1.jar15 Feb 20261.16.546 KB5 downloads6147efc20411…Get
  • solsauthlogin-1.16.5-1.0.0.jar31 Jan 20261.16.545 KB18 downloadsc808a0ebce16…Get

Frequently asked

Does Sol's AuthLogin work on Minecraft 1.21.1?

Yes. 1.21.1 is the newest Minecraft version Sol's AuthLogin 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 Sol's AuthLogin support?

Everything the author has declared, from 1.16.5 up to 1.21.1. The full list is in the table above, with the Java runtime each version needs next to it.

Which platform or loader does Sol's AuthLogin support?

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

Which Java version do I need for Sol's AuthLogin?

On the newest Minecraft version it supports, Java 21 or newer. The requirement comes from the Minecraft version you run rather than from the mod itself, so on an older supported Minecraft the answer is that version's Java, not this one.

How do I install Sol's AuthLogin?

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 Sol's AuthLogin safely?

Start with the author's page on CurseForge, which is where the data here is synced from. MCReference does not host or repackage files. The download link goes to the source recorded for that release; verify the publisher, filename and checksum before running it.

Works on the same versions

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

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Details from CurseForge, where the author last updated it on 12 Aug 2026. 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? .