ModsFinder

McAuth

by masterzach32

McAuth is a Fabric and Forge utility for 1.17.1 that re-validates a player's Minecraft session when a server refuses the connection.

FabricForgeClient and serverMIT LicenseOpen source1.17.1

What it does

McAuth targets the session validation error that appears when a player cannot connect to a server. It re-authenticates the player's account in the background so the join can proceed. The mod is a fork of AuthMe and is available for both Fabric and Forge. Installation covers the server and each player's game. The code is released under the MIT License and is open source. Source code, an issue tracker and a wiki are linked from the project.

Key features

  1. Session re-validation

    Re-authenticates the player's Minecraft session when the server reports it as invalid.

  2. Fixes connection errors

    Targets the error shown when a server fails to connect because the session cannot be verified.

  3. Fabric and Forge builds

    Files exist for both loaders, with 2.0.0 as the latest release for 1.17.1.

Compatibility

Latest build for each game version and loader.

1.17.11.17.1-2.0.0-fabric1.17.1-2.0.0-forge
ReleaseBetaAlphaNot available

Only full game releases are shown. This mod publishes no snapshot builds.

How it compares

Full comparison

Auth Me is a Fabric, NeoForge and Quilt mod with a much wider version range, 1.16 – 26.3, and is client-side only. OAuth is a Fabric and Forge client-side mod covering 1.7.10 – 1.20, licensed under the GNU Lesser General Public License v3.0 or later.

ModLoadersGame versionsEnvironmentUpdated
McAuthFabric and Forge1.17.1Client and server2021-08-29
Auth MeFabric, NeoForge and Quilt1.16 – 26.3Client-side only2026-09-19
OAuthFabric and Forge1.7.10 – 1.20Client-side only2023-06-09

Questions

Which loaders does McAuth support?

McAuth has files for Fabric and Forge. The latest file for each is 2.0.0, built for 1.17.1.

Does McAuth need to be installed on the server?

The server and every player need the mod installed.

In the catalog

McAuth is one of 36,990 Utility mods on ModsFinder, and one of 25,772 Utility mods for Fabric. 4,181 mods support Minecraft 1.17.1.

Utility mods36,990Fabric modsMods for 1.17.14,181

Similar mods

Mod Menu1.14.4 – 26.3Reese's Sodium Options1.16.5 – 26.3Jade 🔍1.16.4 – 26.3FancyMenu1.12 – 26.3Indium1.16.5 – 1.21.1Controlling1.7.10 – 26.3

What the author says

McAuth is a Minecraft mod that brings account authentication into the game in the efforts of overcoming the infamous session validation error when connecting to a server. McAuth is a fork of authme by axieum that is available for both fabric and forge
masterzach32, on the Modrinth page

Official listing

Owner
masterzach32
Published
2021-08-29
Updated on Modrinth
2021-08-29
Facts verified
2026-10-15

Tags

Utility
Open on ModrinthCompare