Menu

mod

DEUF - Duplicate Entity UUID FixMinecraft mod for 1.21.1

Changes UUIDs of loaded Entities in case their UUIDs are already assigned (and removes log spam).

newest supported 1.21.1Server UtilityWorld GenCosmetic
Latest version
deuf-1.21.1-1.3.jar
Minecraft
1.12 to 1.21.1
Java
Java 21+
Loaders
Forge, NeoForge
Licence
not stated
Downloads
32.0M
Updated
3 mo ago
Available on
CurseForge
Space NodePartner

Host DEUF - Duplicate Entity UUID Fix servers

One click and DEUF - Duplicate Entity UUID Fix is installed with the right loader, on hardware built for it.

  • 1.21.1
  • Forge
  • NeoForge
  • One click mod install
  • Loader matched for you
  • Ryzen CPUs
  • NVMe SSD
Deploy a serverFrom €0.90 per GB

Minecraft versions

Every version DEUF - Duplicate Entity UUID Fix declares support for, newest first, with the Java runtime that version needs.

Other mods
MinecraftThroughJavaEvidenceReleased
1.21.1Forge, NeoForge21+declared8 Aug 2024
1.20.2NeoForge, Forge17+declared20 Sept 2023
1.20.1NeoForge, Forge17+declared12 Jun 2023
1.19.4NeoForge, Forge17+declared14 Mar 2023
1.19.3Forge, NeoForge17+declared7 Dec 2022
1.19.2NeoForge, Forge17+declared5 Aug 2022
1.19.1NeoForge, Forge17+declared27 Jul 2022
1.19Forge, NeoForge17+declared7 Jun 2022
1.18.2NeoForge, Forge17+declared28 Feb 2022
1.16.5NeoForge, Forge8+declared14 Jan 2021
1.16.4Forge, NeoForge8+declared29 Oct 2020
1.16.3NeoForge, Forge8+declared10 Sept 2020
1.15.2NeoForge, Forge8+declared17 Jan 2020
1.15.1NeoForge, Forge8+declared16 Dec 2019
1.15NeoForge, Forge8+declared9 Dec 2019
1.12.2NeoForge, Forge8+declared18 Sept 2017
1.12.1NeoForge, Forge8+declared3 Aug 2017
1.12NeoForge, Forge8+declared2 Jun 2017

Download

From DEUF - Duplicate Entity UUID Fix’s own host. Nothing is re-hosted here.

deuf-1.21.1-1.3.jarrelease4 Jun 2026

deuf-1.21.1-1.3.jar · 0.0 MB · for 1.21.1

Download latest
8db4168b152f…
Older versions17
  • deuf-forge-1.20.2-1.3.jar15 Nov 20231.20.20.0 MB3.5k downloads9b511a797334…Get
  • deuf-1.20.2-1.3.jar15 Nov 20231.20.20.0 MB132 downloadse08aad54bada…Get
  • deuf-1.20.1-1.3.jar20 Jun 20231.20.10.0 MB11.6M downloads4f96406c6257…Get
  • deuf-1.19.4-1.3.jar28 Apr 20231.19.40.0 MB1.9k downloads991fc3189906…Get
  • deuf-1.19.3-1.3.jar1 Mar 20231.19.30.0 MB791 downloads569d5a575654…Get
  • deuf-1.19.2-1.3.jar10 Aug 20221.19.20.0 MB3.9M downloadsaedcc964323f…Get
  • deuf-1.19.1-1.3.jar28 Jul 20221.19.10.0 MB1.6k downloads10bf6b5e17f4…Get
  • deuf-1.18.2-1.3.jar23 Jul 20221.18.20.0 MB427.6k downloads24c024b36462…Get
  • deuf-1.19-1.3.jar23 Jul 20221.190.0 MB286 downloadsc47be29fdcf9…Get
  • deuf-1.19-1.2.jar20 Jul 20221.190.0 MB141 downloads86f0d3f08e73…Get
  • deuf-1.18.2-1.2.jar20 Jul 20221.18.20.0 MB209 downloadsabd55bc9df47…Get
  • deuf-1.16.5-1.1.jar19 Jul 20221.16.50.0 MB1.1M downloadsc1ab6affd98b…Get
  • deuf-1.16.4-1.1.jar24 Nov 20201.16.4, 1.16.50.0 MB197.2k downloads00975d7e7b88…Get
  • deuf-1.16.3-1.1.jar27 Sept 20201.16.30.0 MB709 downloadsad8d335a8da5…Get
  • deuf-1.15.2-1.1.jar27 Sept 20201.15, 1.15.1, 1.15.20.0 MB1.0k downloads3124bee506e8…Get
  • deuf-1.1-1.12.2.jar26 Jun 20181.12, 1.12.1, 1.12.20.0 MB1.3M downloads157152e76963…Get
  • deuf-1.0-1.12.2.jar23 Jun 20181.12, 1.12.1, 1.12.20.0 MB1.4k downloadsf1a7425b1e04…Get

Frequently asked

Does DEUF - Duplicate Entity UUID Fix work on Minecraft 1.21.1?

Yes. 1.21.1 is the newest Minecraft version DEUF - Duplicate Entity UUID Fix declares support for, and the claim comes from the author's own release metadata rather than from a compatibility list somebody maintains by hand.

Which Minecraft versions does DEUF - Duplicate Entity UUID Fix support?

Everything the author has declared, from 1.12 up to 1.21.1. The full list is in the table above, with the Java runtime each version needs next to it.

Which loader does DEUF - Duplicate Entity UUID Fix need?

Forge, NeoForge. A build for one loader will not load on another, so this is the first thing to check before the Minecraft version.

Which Java version do I need for DEUF - Duplicate Entity UUID Fix?

Java 21 or newer, because that is what the newest Minecraft release it supports requires. The requirement comes from the game rather than from the mod itself.

How do I install DEUF - Duplicate Entity UUID Fix?

Install the matching loader first, then put the downloaded file in your mods folder and start the game. The loader, the mod and Minecraft all have to be on the same version, which is the usual reason a mod does not appear in game.

Where do I download DEUF - Duplicate Entity UUID Fix safely?

From the author's own page on CurseForge, which is where the data here is synced from. MCReference never mirrors, re-hosts or repackages a file: every download button points at the original source, so you get exactly what the author published.

Works on the same versions

Ordered by how much of the recent Minecraft version coverage overlaps, not by popularity.

BookshelfAn open source library for other mods!GeckoLibA 3D animation library for entities, blocks, items, armor, and more!Cloth Config API (Fabric/Forge/NeoForge)Config Screen API for MinecraftJourneyMapReal-time map used for mapping in-game or your browser as you explore.Architectury APIAn intermediary api aimed to ease developing multiplatform mods.Enchantment DescriptionsAdds in-game descriptions for enchantments to tooltips.

Last checked 1 mo ago against CurseForge. We do not host files and we do not republish descriptions; every download link points at the author’s own release.

Is this information wrong or missing something? .