Unsafe World Random Access Detector (Forge)
Modby ishlandmc
This is a mod that detects unsafe off-thread world random access, helping to find causes of "Accessing LegacyRandomSource from multiple threads" crash.
Downloads
252,768
Type
Mod
CurseForge ID
853354
Last Updated
Apr 12, 2026
Description
Unsafe World Random Access Detector (Forge)
This is a mod that detects unsafe off-thread world random access, helping to find causes of "Accessing LegacyRandomSource from multiple threads" crash.
This is useful for finding the cause of mysterious crashes with Accessing LegacyRandomSource from multiple threads.
This is not a fix for the issue, but it will help you find the cause of the issue.
Looking for fabric versions? Looking for neoforge versions?

Screenshots
Similar Mods
Cool Rain
Creates ambient sounds for certain blocks during rain
Loot Integrations: Formations Overworld & Nether
Adds better loot to " Formations" structure's chests, including modded loot
Loot Integrations: Dungeon Crawl
Adds better loot to Dungeon Crawl chests, including modded loot
JEI Utilities
Added more enhancements to JEI
Create: Bitterballen
A Create addon which adds Dutch snacks!
Flan's Mod: Legacy
Planes, Helicopters, Mechas, Vehicles, Guns, Multiplayer Gamemodes