About Dupe Fixes / Illegal Stack Remover
From SpigotMCProvided fixes for several vanilla bugs that allow players to dupe on your server.
NOW UPDATED FOR MC 1.20.6
NOTICE
It has been brought to my attention there is a player going around joining servers and discord’s claiming to be part of IllegalStack or otherwise representing me. There is NO such person, and they are trying to get server admins to download and run a modified version of this plugin that contains malicious code intended to take over or destroy the server it is run on. NEVER trust a file sent to you by anyone. I will NEVER join your server and ask you to install anything on your server. The ONLY place this plugin versions are uploaded is right here on spigot. There’s no special download site.. Only download official releases posted here on spigot.
if you have further questions or concerns please contact me via dm here or on the official IllegalStack discord / GitHub
Config Resetting? READ THIS!
Tripwire Dupe Exploit (Now with doors)
Villager Trade Cheesing
Carpet/Rail Dupes
Llama/Donkey Dupe
Additionally most long standing exploits such as portal dupes and bedrock destruction will likely never get fixed unless Mojang does it. Feel free to report these methods to Mojang maybe one day they will fix them.
UPGRADING FROM A VERSION OLDER THAN 2.0.4????
READ ME FIRST!!!!
Protect your sever from over <a href="https://github.com/dniym/IllegalStack/wiki/Features-&-Protections" target="_blank" class="externalLink" rel="nofollow">FIFTY glitches and dupes that have made it into final Spigot builds! This plugin supports all versions of Spigot from 1.8.8 to present. I try to keep it up to date with any new exploits that are found (from any version) So please feel free to contact me if you know of a vanilla game mechanic exploit that should be fixed!
https://discord.gg/Gsx4QaT
New Wiki!
This resource page was getting quite messy with all the new features that have been added to IllegalStack over the years, thus I have created a github page and a wiki for this plugin that is a comprehensive guide to every single protection and option in this plugin, along with a guide on how to use the in-game config editor! So please for more detailed information check out the:
-->UNOFFICIAL CHINESE WIKI TRANSLATION<--
-->ESPANOL TRANSLATION Messages.yml<--
-->PORTUGESE TRANSLATION Messages.yml<--
Recent Plugin Updates:
New for version 2.8*
-- Updated to support 1.20 servers
Highlights
From source dataGame versions
Supports 14 Minecraft versions, the newest being 1.20.6.
Loaders
Runs on Spigot and Paper.
Footprint
Rated a light load on a server.
Dupe Fixes / Illegal Stack Remover on Nxeon
From our catalogue- One-click install
- Supported on Nxeon Minecraft servers, for Paper servers. We download it from SpigotMC, place it, and restart the server.
- Server side
- Required on the server
- Server type needed
- Spigot, Paper
- Server load
- light
- Smallest plan we suggest
- Minecraft — 2 GB (2 GB RAM). This follows our own load rating above, not a benchmark.
- Latest build
- 2.9.12a, released 2024-07-16
Game versions by loader
| Loader | Game versions | Newest |
|---|---|---|
| Paper | 1.8 to 1.20.6 (14 versions) | 1.20.6 |
| Spigot | 1.8 to 1.20.6 (14 versions) | 1.20.6 |
From 10 recorded builds of Dupe Fixes / Illegal Stack Remover.
Recent builds
| Build | Released | Game versions | Loaders |
|---|---|---|---|
| 2.9.12a | 2024-07-16 | 1.8 to 1.20.6 (14 versions) | Spigot, Paper |
| 2.9.12 | 2024-07-08 | n/a | Spigot, Paper |
| 2.9.11 | 2024-06-05 | n/a | Spigot, Paper |
| 2.9.9 | 2024-02-29 | n/a | Spigot, Paper |
| 2.9.8 | 2023-08-15 | n/a | Spigot, Paper |
| 2.9.5 | 2023-07-13 | n/a | Spigot, Paper |
Run Dupe Fixes / Illegal Stack Remover on a Minecraft server
Pick a server or deploy a new one above; it is installed in one click.
What kind of mod it is
From the catalogAdmin & protection
Permissions, moderation, anti-cheat and land protection for the people running the server.
Runs on your server
From source side supportSpigotMC lists Dupe Fixes / Illegal Stack Remover as required on the server. Check its SpigotMC page to see whether players need it too.
Compatibility
- Game
- Minecraft
- Loaders
- SpigotPaper
- Runs on
- Serverrequired on the server
- Game versions
- 1.20.6 and 13 earlier
- Requires
- One-click install needs a Paper server.
Verified at the source
- ✓SpigotMCOfficial listing, checked 2026-10-01Open ↗
- ✓AuthordNiym, as published on SpigotMC
- ✓LicenseNot published by the sourceFree








