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SimpleAuth: Server Login System

SimpleAuth: Server Login System

MOD
Lightweight authentication and login system for Minecraft servers with secure player verification and configurable access control.
by Zonoikk
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7,723 downloads
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Updated Oct 14, 2026
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Server Utility Utility & QoL
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SimpleAuth is a lightweight and secure login and authentication system for Minecraft multiplayer servers.

It allows server owners to protect their community by requiring players to register and log in before playing, preventing unauthorized access and account sharing.

This makes SimpleAuth one of the most reliable server-side authentication mods for Minecraft.


🔐 Server Login System

SimpleAuth introduces a complete login and registration system for multiplayer servers:

  • Player registration with password (/register)
  • Secure login system (/login)
  • Configurable authentication rules
  • Server-side account protection

🛡️ Server Security Features

SimpleAuth helps protect your server with:

  • Login requirement before playing
  • Movement and interaction restriction until authenticated
  • Optional blindness effect for unauthenticated players
  • Anti-bruteforce protection with failed login limits
  • Optional auto-kick after repeated failed attempts

🌐 Multi-language Support

Supports multiple languages: English, Spanish, French, Polish, Russian, Ukrainian

Language can be changed via:

  • /simpleauth language

🖥️ Optional GUI Login (v5.0+)

SimpleAuth includes an optional graphical login interface for easier authentication (client required).

Features:

  • Clean login/register UI
  • Live countdown timer
  • Error handling without forced kicks

⚙️ Commands

  • /register <password>
  • /login <password>
  • /changepassword <old> <new>
  • /forcelogin <player>
  • /simpleauth language
  • /simpleauth help

🎯 Why SimpleAuth?

Most Minecraft servers lack proper authentication systems.

SimpleAuth solves this by providing a simple, secure, and configurable login system that improves server protection without requiring external plugins.


💡 Lightweight & Server Friendly

Designed specifically for multiplayer servers with minimal performance impact and full configurability.

simpleauth-fabric-1.21.1-5.0.0.jar
MC Client, Fabric, 1.21.1, Server
Release 2026-09-15 Get
simpleauth-fabric-1.21.1-5.0.0-hybrid-BETA.jar
MC Client, Fabric, 1.21.1, Server
Beta 2026-09-15 Get
simpleauth-forge-1.20.1-5.0.1-mohist-BETA.jar
MC Client, 1.20.1, Forge, Server
Beta 2026-09-15 Get
simpleauth-fabric-5.0.0-1.20.1
MC Client, Fabric, 1.20.1, Server
Release 2026-05-30 Get
simpleauth-5.0.0-1.20.1
MC Client, 1.20.1, Forge, Server
Release 2026-02-26 Get
simpleauth-4.0.0-1.19
MC Forge, Server, 1.19
Release 2025-10-05 Get
simpleauth-4.2.0-1.19.1
MC Forge, 1.19.1, Server
Release 2025-10-05 Get
simpleauth-4.2.0-1.19.2
MC 1.19.2, Forge, Server
Release 2025-10-05 Get
simpleauth-4.2.0-1.19.4
MC 1.19.4, Forge, Server
Release 2025-10-05 Get
simpleauth-1.20.2-4.2.0
MC 1.20.2, Forge, Server
Release 2025-09-30 Get
simpleauth-1.20.3-4.2.0
MC 1.20.3, Forge, Server
Release 2025-09-30 Get
simpleauth-1.20.4-4.2.0
MC Forge, 1.20.4, Server
Release 2025-09-30 Get
simpleauth-1.20.6-4.2.0
MC Forge, 1.20.6, Server
Release 2025-09-30 Get
simpleauth-4.2.0-1.20.1
MC 1.20.1, Forge, Server
Release 2025-09-29 Get
simpleauth-4.1.0-1.20.1
MC 1.20.1, Forge, Server
Release 2025-09-28 Get
simpleauth-1.20.2-4.1.0
MC 1.20.2, Forge, Server
Release 2025-09-28 Get
simpleauth-1.20.3-4.1.0
MC 1.20.3, Forge, Server
Release 2025-09-28 Get
simpleauth-1.20.4-4.1.0
MC Forge, 1.20.4, Server
Release 2025-09-28 Get
simpleauth-1.20.6-4.1.0
MC Forge, 1.20.6, Server
Release 2025-09-28 Get
simpleauth-4.0.0-1.19
MC Forge, Server, 1.19
Release 2025-08-16 Get
simpleauth-4.0.0-1.19.1
MC Forge, 1.19.1, Server
Release 2025-08-16 Get
simpleauth-4.0.0-1.19.2
MC 1.19.2, Forge, Server
Release 2025-08-16 Get
simpleauth-4.0.0-1.19.3
MC 1.19.3, Forge, Server
Release 2025-08-16 Get
simpleauth-4.0.0-1.19.4
MC 1.19.4, Forge, Server
Release 2025-08-16 Get
simpleauth-4.0.0-1.20.4
MC Forge, 1.20.4, Server
Release 2025-08-16 Get
simpleauth-4.0.0-1.20.6
MC Forge, 1.20.6, Server
Release 2025-08-16 Get
simpleauth-4.0.0-1.20.3
MC 1.20.3, Forge, Server
Release 2025-08-16 Get
simpleauth-4.0.0-1.20.2
MC 1.20.2, Forge, Server
Release 2025-08-16 Get
simpleauth-4.0.0-1.20.1
MC 1.20.1, Forge, Server
Release 2025-08-16 Get
simpleauth-3.0.0-1.20.1
MC 1.20.1, Forge, Server
Release 2025-05-04 Get
simpleauth-3.0.0-1.20.2
MC 1.20.2, Forge, Server
Release 2025-05-04 Get
simpleauth-3.0.0-1.20.4
MC Forge, 1.20.4, Server
Release 2025-05-04 Get
simpleauth-2.0.1
MC 1.20.1, Forge, Server
Release 2024-12-19 Get
simpleauth-2.0.0
MC 1.20.1, Forge, Server
Release 2024-12-17 Get
simpleauth-1.1.0
MC 1.20.1, Forge, Server
Release 2024-12-12 Get
simpleauth-1.0.0
MC 1.20.1, Forge, Server
Release 2024-12-07 Get

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