ModsFinder

AlwaysAuth

by GamerDuck123

AlwaysAuth lets a Minecraft server stay in online mode and fall back to a local authentication system when Mojang's authentication servers cannot be reached.

FabricNeoForgeQuiltBabricGNU General Public License v3.0 onlyOpen source1.8.8 – 26.2

What it does

Each login attempt goes to Mojang first. If Mojang answers, the request returns to the server unchanged. If Mojang cannot be reached, AlwaysAuth switches to its local fallback system to check the user. The server keeps its online mode enabled throughout, so the offline-mode workarounds that disable verification are not used. Failover is immediate, and the mod does not wait for periodic checks before it acts, so even short outages are handled.

AlwaysAuth works by inserting a local authentication server between the Minecraft server and Mojang's official authentication servers. It runs on Spigot, Paper, BungeeCord, Velocity, Fabric and NeoForge, and a configuration file controls how the fallback behaves. Because the fallback trades some security for availability, a server owner should decide whether that compromise suits the server before installing it. Files are published for 1.8.8 – 26.2, and the latest Fabric, NeoForge and Quilt builds target 26.2.

Key features

  1. Online mode stays enabled

    The server never switches to offline mode, so verification stays in place during Mojang outages.

  2. Immediate failover

    A failed Mojang request triggers the local fallback at once instead of waiting for a periodic check.

  3. Local authentication fallback

    A local system verifies players when Mojang's servers cannot be reached, for extended downtime as well as brief outages.

  4. Configurable behavior

    A configuration file lets the server owner adjust how the fallback system operates.

Compatibility

Latest build for each game version and loader.

26.x4 of 4 versions with builds
26.20.5.1-26.2-fabric2610.5.1-26.2-neoforge0.5.1-26.2-fabric2610.5.1-26.2-fabric261
26.1.20.5.1-26.1.2-fabric2610.5.1-26.1.2-neoforge0.5.1-26.1.2-fabric2610.5.1-26.1.2-fabric261
26.1.10.5.1-26.1.1-fabric2610.5.1-26.1.1-neoforge0.5.1-26.1.1-fabric2610.5.1-26.1.1-fabric261
26.10.5.1-26.1-fabric2610.5.1-26.1-neoforge0.5.1-26.1-fabric2610.5.1-26.1-fabric261
1.21.x12 of 12 versions with builds
1.21.110.5.1-1.21.11-fabric0.5.1-1.21.11-neoforge0.5.1-1.21.11-fabric0.5.1-1.21.11-fabric
1.21.100.5.1-1.20-fabric0.5.1-1.20.4-neoforge0.5.1-1.20-fabric0.5.1-1.20-fabric
1.21.90.5.1-1.20-fabric0.5.1-1.20.4-neoforge0.5.1-1.20-fabric0.5.1-1.20-fabric
1.21.80.5.1-1.20-fabric0.5.1-1.20.4-neoforge0.5.1-1.20-fabric0.5.1-1.20-fabric
1.21.70.5.1-1.20-fabric0.5.1-1.20.4-neoforge0.5.1-1.20-fabric0.5.1-1.20-fabric
1.21.60.5.1-1.20-fabric0.5.1-1.20.4-neoforge0.5.1-1.20-fabric0.5.1-1.20-fabric
1.21.50.5.1-1.20-fabric0.5.1-1.20.4-neoforge0.5.1-1.20-fabric0.5.1-1.20-fabric
1.21.40.5.1-1.20-fabric0.5.1-1.20.4-neoforge0.5.1-1.20-fabric0.5.1-1.20-fabric
1.21.30.5.1-1.20-fabric0.5.1-1.20.4-neoforge0.5.1-1.20-fabric0.5.1-1.20-fabric
1.21.20.5.1-1.20-fabric0.5.1-1.20.4-neoforge0.5.1-1.20-fabric0.5.1-1.20-fabric
1.21.10.5.1-1.20-fabric0.5.1-1.20.4-neoforge0.5.1-1.20-fabric0.5.1-1.20-fabric
1.210.5.1-1.20-fabric0.5.1-1.20.4-neoforge0.5.1-1.20-fabric0.5.1-1.20-fabric
1.20.x7 of 7 versions with builds
1.19.x5 of 5 versions with builds
1.18.x3 of 3 versions with builds
1.17.x2 of 2 versions with builds
1.16.x6 of 6 versions with builds
1.15.x3 of 3 versions with builds
1.14.x1 of 1 version with builds
ReleaseBetaAlphaNot available

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

How it compares

Full comparison

AuthBack is a mod that works on either side, and neither side needs it, under the GNU Affero General Public License v3.0 only, published for Fabric across 1.21.10 – 26.3. Profile Cached is server-side only, open source under the GNU General Public License v3.0 or later, and covers Fabric, Forge, NeoForge and Quilt across 1.18.2 – 26.2. MixAuth is server-side only, open source under the GNU Lesser General Public License v3.0 only, and targets NeoForge across 1.21.1 – 26.3.

ModLoadersGame versionsEnvironmentUpdated
AlwaysAuthFabric, NeoForge, Quilt and Babric1.8.8 – 26.2Not published2026-06-16
AuthBackFabric1.21.10 – 26.3Client or server, optional2026-09-17
Profile CachedFabric, Forge, NeoForge and Quilt1.18.2 – 26.2Server-side only2026-03-29
MixAuthNeoForge1.21.1 – 26.3Server-side only2026-09-28

Questions

Does AlwaysAuth keep the server in online mode?

Yes. The server never switches to offline mode. The local fallback handles verification only while Mojang's authentication servers are unreachable.

Which platforms does AlwaysAuth run on?

It runs on Spigot, Paper, BungeeCord, Velocity, Fabric and NeoForge. Sponge support is planned for a later release.

Does Fabric need Fabric API for AlwaysAuth?

The author notes do not list Fabric API as a requirement, so no dependency is named here. Check the file page for any loader-specific needs before installing.

In the catalog

AlwaysAuth is one of 3,545 Optimization mods on ModsFinder, and one of 2,575 Optimization mods for Fabric. 13,894 mods support Minecraft 26.2.

Optimization mods3,545Fabric modsMods for 26.213,894

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What the author says

AlwaysAuth is a fallback authentication solution for Minecraft servers that ensures your players can log in even if Mojang's authentication servers experience downtime. Unlike traditional offline-mode workarounds, AlwaysAuth keeps your server in online mode while providing a seamless failover mechanism to a local…
GamerDuck123, on the Modrinth page

Official listing

Owner
GamerDuck123
Published
2025-10-30
Updated on Modrinth
2026-06-16
Facts verified
2026-10-15

Tags

ManagementOptimizationUtilityTechnology
Open on ModrinthCompare