SimpleAuth

Authentication mod for Fabric or Forge servers

4.1K Downloads

fabricforgeutility

Rent Server with this Mod

About this Mod

Deprecated. Use EasyAuth instead.

SimpleAuth

Do you have a server that you want to protect from unwanted visitors without using whitelist? Or need an extra form of authentication for players?

This mod will come in handy then - it denies moving, destroying blocks etc. for players that aren't registered / logged in. It's possible to set a global password as well, check wiki for more details.

Make sure to download the right version, depending on your server being Fabric or Forge one!

Features

(All options can be found in the config file.)

Auto login players that have purchased Minecraft
Online UUIDs for online players
Disabled movement for de-authenticated players
Disabled block interactions
Inventory protection (item moving and dropping)
Sessions
Coordinate protection
Prevents "Logged in from another location"
And more (check wiki for details)

Translations

Check available languages.

Feel like donating? Visit donate page.

Other info

Commands can be found on GitHub wiki
Configuration file info
Having issues? Please report them on GitHub issue tracker
Living on the edge? Get latest developer builds

Libraries that the project is using:

Available Versions

SimpleAuthrelease

MC 1.16.5, 21w10afabric

March 10, 2021

SimpleAuthrelease

MC 1.16.4fabric

December 11, 2020

SimpleAuthrelease

MC 1.16.4fabric

December 6, 2020

SimpleAuthrelease

MC 20w49afabric

December 3, 2020

SimpleAuthrelease

MC 1.16.4fabric

December 2, 2020

How to Install SimpleAuth on Your Server

Order Server

Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).

Set fabric Loader

In the panel under "Egg", select the fabric loader and matching Minecraft version (21w10a).

Install Mod

Open the mod browser in the dashboard and search for "SimpleAuth". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.

Compatibility

Mod Loaders

fabricforge

Minecraft Versions

21w10a, 1.16.5, 20w49a (+2 more)

Server-side

✓ Required

Recommended RAM

4 GB(min. 3 GB)

Frequently Asked Questions

SimpleAuth server crashes on startup – what to do?

Most common cause: wrong fabric version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (21w10a). You can switch loaders with one click in the panel.

Is SimpleAuth compatible with fabric and forge?

SimpleAuth officially supports fabric, forge for Minecraft 21w10a, 1.16.5, 20w49a. Note: Forge and Fabric mods are NOT cross-compatible – pick one loader and stick with it. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with SimpleAuth – how to optimize performance?

Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if SimpleAuth consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.