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plugin

DuoAuthMinecraft plugin for 1.21

Secure and adaptive authentication with bcrypt

server onlynewest supported 1.21
Latest version
1.2.3
Minecraft
1.12 to 1.21
Java
Java 21+
Platform
Spigot
Licence
not stated
Downloads
1.6k
Updated
8 mo ago
Available on
SpigotMC
Space NodeOur hosting

Host DuoAuth servers

One click and DuoAuth is installed on a Paper or Purpur server built for it.

  • 1.21
  • Spigot
  • One click plugin install
  • Paper and Purpur ready
  • Automatic updates
  • NVMe SSD
Deploy a serverFrom €0.90 per GB

Minecraft versions

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

Other plugins
MinecraftThroughJavaEvidenceReleased
1.21Spigot21+declared13 Jun 2024
1.20Spigot17+declared2 Jun 2023
1.19Spigot17+declared7 Jun 2022
1.18Spigot17+declared30 Nov 2021
1.17Spigot16+declared8 Jun 2021
1.16Spigot8+declared23 Jun 2020
1.15Spigot8+declared9 Dec 2019
1.14Spigot8+declared23 Apr 2019
1.13Spigot8+declared18 Jul 2018
1.12Spigot8+declared2 Jun 2017

Download

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

1.2.3release26 Jan 2026

duoauth-1.2.3.jar · 5.4 MB

Download latest
Older versions11
  • 1.2.226 Jan 20264 downloadsGet
  • 1.2.123 Jan 202610 downloadsGet
  • 1.2.019 Jan 20266 downloadsGet
  • 1.1.1613 Jan 20268 downloadsGet
  • 1.1.1517 Jun 2022553 downloadsGet
  • 1.1.1410 Mar 2022134 downloadsGet
  • 1.1.134 Aug 2021159 downloadsGet
  • 1.1.122 Jul 2021162 downloadsGet
  • 1.1.1122 Aug 2020215 downloadsGet
  • 1.1.1018 Jul 2020164 downloadsGet
  • 1.1.924 Jun 2020168 downloadsGet

Frequently asked

Does DuoAuth work on Minecraft 1.21?

Yes. 1.21 is the newest Minecraft version DuoAuth 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 DuoAuth support?

Everything the author has declared, from 1.12 up to 1.21. The full list is in the table above, with the Java runtime each version needs next to it.

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

The server only. Players join with an ordinary Minecraft client and install nothing.

Which platform or loader does DuoAuth support?

Spigot. 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 DuoAuth?

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

How do I install DuoAuth?

Choose the release variant for your server platform. Paper, Spigot, Purpur and Bukkit files go in the server's plugins folder; Fabric, Forge, NeoForge and Quilt files go in the mods folder. Restart after installing and check that the Minecraft version matches your server.

Where do I download DuoAuth safely?

Start with the author's page on SpigotMC, 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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Last checked 2 mo ago against SpigotMC. 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? .