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mod

AuthBackMinecraft mod for 26.3

Allows you play normally even when authentication servers are down

newest supported 26.3TechnologyUtilityManagement
Latest version
1.8.0
Loader
Fabric
Licence
AGPL-3.0-only
Downloads
3.7k
Updated
21 d ago
Available on
Modrinth
Space NodeOur hosting

Host AuthBack servers

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

  • 26.3
  • Fabric
  • One click mod install
  • Loader matched for you
  • Ryzen CPUs
  • NVMe SSD
Deploy a serverFrom €0.90 per GB

Minecraft versions

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

Other mods
MinecraftThroughJavaEvidenceReleased
26.3Fabric25+declared15 Sept 2026
26.2Fabric25+declared16 Jun 2026
26.1.2Fabric25+declared9 Apr 2026
26.1.1Fabric25+declared1 Apr 2026
26.1Fabric25+declared24 Mar 2026
1.21.11Fabric21+declared9 Dec 2025
1.21.10Fabric21+declared7 Oct 2025

Download

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

1.8.0release17 Jun 2026

authback-1.8.0.jar · 0.3 MB · for 26.2

Download latest
3a31fab9fc9c…
Older versions16
  • 1.8.0-SNAPSHOT3 Jun 202626.2-pre-30.3 MB15 downloads780d0ed914c0…Get
  • 1.7.13 Jun 202626.1.20.3 MB270 downloadsa3f1992ac586…Get
  • 1.7.023 Apr 202626.1.20.3 MB400 downloads9bde132c019f…Get
  • 1.6.110 Apr 202626.1.20.3 MB72 downloadsc7ed05deee30…Get
  • 1.6.024 Mar 202626.1.1, 26.10.3 MB158 downloadse7ad54340bad…Get
  • 1.5.014 Jan 20261.21.110.3 MB779 downloadsada40589ea5f…Get
  • 1.4.02 Jan 20261.21.110.3 MB87 downloads5d7329826f0f…Get
  • 1.3.024 Dec 20251.21.110.2 MB69 downloads7bbe0b7a8f0c…Get
  • 1.2.122 Dec 20251.21.110.2 MB56 downloads055f59139c23…Get
  • 1.2.019 Dec 20251.21.110.2 MB68 downloads3c9af9e6af6b…Get
  • 1.1.117 Dec 20251.21.110.2 MB51 downloads4a80f6b99b27…Get
  • 1.1.017 Dec 20251.21.110.2 MB40 downloadsb310d60d65d8…Get
  • 1.0.09 Dec 20251.21.110.2 MB89 downloads03be3e2bbf41…Get
  • 0.4.030 Nov 20251.21.100.2 MB141 downloadsd00bc081943f…Get
  • 0.3.230 Nov 20251.21.100.2 MB53 downloadsfe82c89866ee…Get
  • 0.3.130 Nov 20251.21.100.2 MB65 downloads0c4fd3cb1f09…Get

Frequently asked

Does AuthBack work on Minecraft 26.3?

Yes. 26.3 is the newest Minecraft version AuthBack 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 AuthBack support?

Everything the author has declared, from 1.21.10 up to 26.3. The full list is in the table above, with the Java runtime each version needs next to it.

Which platform or loader does AuthBack support?

Fabric. 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 AuthBack?

On the newest Minecraft version it supports, Java 25 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.

What licence is AuthBack under?

AGPL-3.0-only, 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 AuthBack?

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 AuthBack safely?

Start with the author's page on Modrinth, 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.

Details from Modrinth, where the author last updated it on 17 Sept 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? .