
Modrinth · Minecraft mod
DEUF Refabricated
Fixes entities duplicated UUIDs, removing log spam and preventing crashes.
Quick answer
Which DEUF Refabricated release should I use?
DEUF Refabricated 1.1.0 targets 1.21, 1.21.1, 1.21.2 with Fabric. Do not install it on the client. It must be installed on the dedicated server. No extra mods listed for this file.
Where it goes
Is DEUF Refabricated required on the client, server, or both?
Do not install it on the client. It must be installed on the dedicated server.
This file is marked server-only.
What else does DEUF Refabricated 1.1.0 need?
1.1.0. Change the file and its required mods may change too.
This file does not list any required mods. Do not add a library just because a different file uses it.
This file does not list any required or optional mods.
Before you install it
Add DEUF Refabricated without breaking your instance.
Built for DEUF Refabricated 1.1.0. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use 1.1.0. It targets 1.21, 1.21.1, 1.21.2 with Fabric; another release may have different loader, side or dependency requirements.
- 02
Bring the mods it needs
This file does not list any required mods. Do not add a library just because a different file uses it.
- 03
Put it on the correct side
Do not install it on the client. It must be installed on the dedicated server.
- 04
Pick the file you checked
Use the “Get this file” button beside 1.1.0. It opens that exact file at the source.
About this project
What does DEUF Refabricated add?

DEUF Refabricated is a fabric port of the mod DEUF (Duplicated Entity UUID Fixer) by CAS-ual-TY. It fixes duped UUIDs, removing log spam and also fixing some crashes.
This mod only needs to be present on the server to work. But it's recommended to be included in modpacks to fix these issues while on singleplayer.
The entities will only be fixed on spawn, which means that if your world already has duplicated entities, this will not fix it, you'll have to remove them. Future entities that spawn while this mod is installed will not be duplicated.
Project description from Modrinth.
Pick your setup
DEUF Refabricated by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
1.21.2
1 loader build1.21.1
1 loader build1.21
1 loader build1.20.6
1 loader build1.20.5
1 loader build1.20.4
1 loader build1.20.3
1 loader build1.20.2
1 loader build1.20.1
1 loader build1.20
1 loader build1.19.2
1 loader buildShowing the newest 12 of 15 game versions. Older files are in the list below.
Check the dependencies, then try the file in a copied instance before changing a world you care about.
Recent files
DEUF Refabricated versions and loaders
1.1.0
DEUF_Refabricated-MC1.21-1.1.0.jar
13 Jun 2024
1.1.0
DEUF_Refabricated-MC1.20.1-1.1.0.jar
23 Nov 2023
1.0.0
DEUF_Refabricated-MC1.19.2-1.0.0.jar
23 Nov 2023
Looking for an older file? The official Modrinth project page is in Resources.