UUID Off
by ente_blin
UUID Off lets a Fabric server accept players whose offline-mode UUID differs from the official one, by matching them on name instead.
What it does
When online-mode is set to false in server.properties, a whitelist entry is written with the offline UUID, which often does not match the UUID the game sends and blocks the player from joining. This mod makes the whitelist check use the player's name, so the server admits the player without any manual UUID editing. The change is limited to the whitelist step and does not alter the rest of the login process.
The mod is server-side only, so players join without installing anything. It is published for Fabric on 1.20.2 and 1.20.4, with 1.1 for 1.20.4 as the latest file, and it is released under All rights reserved; the source code is public.
Key features
Name-based whitelist check
The whitelist matches players by name, which removes the UUID mismatch when online-mode is off.
Simpler offline setup
Server owners running with online-mode=false no longer need to correct whitelist UUIDs by hand.
Targeted change
Only the whitelist UUID check is affected, so other parts of the login flow stay as they are.
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Questions
Does UUID Off need to be installed on players' clients?
Which versions does UUID Off support?
In the catalog
UUID Off is one of 5,392 Social mods on ModsFinder, and one of 4,084 Social mods for Fabric. 13,907 mods support Minecraft 1.20.4.
Similar mods
What the author says
Just simplifies adding to the whitelist if you use online-mode=false in server.properties When you add the player in whitelist in "offline" UUID will be writing wrong. Therefore player cannot join to the server.
Official listing
- Modrinth page
- modrinth.com/mod/uuid-off
- Owner
- ente_blin
- Published
- 2023-10-21
- Updated on Modrinth
- 2024-05-15
- Facts verified
- 2026-10-15