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Login System

LoginSystem For offline servers

FabricNeoForgeForge
Loaders
FabricNeoForgeForge
Downloads on Modrinth
9.4K
Followers on Modrinth
18
versions
21
Updated
August 24, 2026Aug 24
Published
in 2025

At a glance

Runs on Fabric, NeoForge and Forge
For Minecraft 1.20–1.20.4, 1.21–26.2
Server only — players don't need to install it
Latest version — 3.1 from August 24, 2026
License MIT — free
Where it's needed
In gamenot neededOn serverrequired

Install on the server only; players don't need it

Game versions1.20–1.20.4, 1.21–26.2

Backup System mod

Kovai Hosting kovai

🔐 Login System – Secure Your Server!

Login System is a simple yet powerful mod that adds a registration and login system for offline-mode Minecraft servers. It ensures players must authenticate before playing, preventing impersonation and unauthorized access.

✨ Features

Player Authentication Players must /register and /login before interacting with the server.

Auto-Kick & Restrictions Unauthenticated players cannot move or interact until they log in.

Configurable Settings Fully customizable via config/loginsystem.properties (timeout, messages, database options, waiting area coordinates, etc.).

Waiting Area & Position Restore

Saves the player’s original position when joining.

Teleports them to a configurable waiting area.

Restores their position after successful login/registration.

Inventory Hiding & Blindness Unauthenticated players have their inventory hidden and a blindness effect applied.

Double Login Prevention Blocks duplicate connections with the same UUID (disconnects the second session).

Admin Commands

/loadmin info → View stored password info.

/loadmin delete → Delete a stored password.

🔧 How to Use

Install the Mod

Download the .jar and place it into your server’s mods/ folder.

Configure Settings

Open: config/loginsystem.properties

Each option is documented with comments for easy setup.

Player Commands

/register

/login

/changepassword

Admin Commands

/loadmin info

/loadmin delete

📥 Installation

Mod Loader: Forge

Minecraft Version: 1.20+

Dependencies: None (latest versions only)

💖 Support

If you enjoy the mod, consider supporting me — donations help me keep developing 🚀 🔗 GitHub

FAQ

How to install Login System?

Install Fabric for your Minecraft version, download Login System for the same version and loader, put the file into the mods folder and launch the game with the loader profile.

Which Minecraft versions does Login System support?

Login System has builds for Minecraft 1.20–1.20.4, 1.21–26.2.

Is Login System needed on the server?

Server only — players don't need to install it

License and source
MIT Licensefree to use and share with credit to the author
Original — Modrinth↗Files unchanged, verified with SHA-512Is this your mod? For rights holders

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