Unsafe World Random Access Detector Mod (26.1.2, 1.20.1) – Debug Information
0 
April 8, 2026 
Unsafe World Random Access Detector Mod 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. Note: If you are already using C2ME (Concurrent Chunk Management Engine Mod), this mod is not needed (but won’t crash if used together anyway).
Screenshots:
How to Install:
New to Minecraft? Follow our step-by-step guide to install Mods on your PC.View Guide
Unsafe World Random Access Detector Mod Download Links
For Minecraft 26.1.2, 26.1.1, 26.1
For Minecraft
1.21.11,
1.21.10,
1.21.9
All Versions Covered
1.21.11
1.21.10
1.21.9
1.21.8
1.21.7
1.21.6
1.21.5
1.21.4
1.21.3
1.21.2
1.21.1
1.21
1.20.6
1.20.5
1.20.4
1.20.3
1.20.2
1.20.1
1.20
1.19.4
1.19.3
1.19.2
1.19.1
1.19
All Versions Covered
1.21.11
1.21.10
1.21.9
1.21.8
1.21.7
1.21.6
1.21.5
1.21.4
1.21.3
1.21.2
1.21.1
1.21
1.20.6
1.20.5
1.20.4
1.20.3
1.20.2
1.20.1
1.20
1.19.4
1.19.3
1.19.2
1.19.1
1.19
For Minecraft 1.21.10, 1.21.9
For Minecraft 1.21.8, 1.21.7, 1.21.6
For Minecraft 1.21.5
For Minecraft 1.21.4, 1.21.3
For Minecraft 1.20.6
For Minecraft 1.20.5
For Minecraft
1.20.4,
1.20.3,
1.20.2
All Versions Covered
1.20.4
1.20.3
1.20.2
1.20.1
1.20
1.19.4
1.19.3
1.19.2
1.19.1
1.19
All Versions Covered
1.20.4
1.20.3
1.20.2
1.20.1
1.20
1.19.4
1.19.3
1.19.2
1.19.1
1.19
For Minecraft
1.19.3,
1.19.2,
1.19.1
All Versions Covered
1.19.3
1.19.2
1.19.1
1.19
All Versions Covered
1.19.3
1.19.2
1.19.1
1.19
For Minecraft 1.19 –> 1.20.4
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