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Java Edition 1.21.9 Release Candidate 1

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Minecraft 1.21.9 Release Candidate 1
Edition Java Edition
Release date September 25, 2025
Type Release Candidate
Release candidate for 1.21.9
Downloads Client (.json)
Server
Obfuscation maps Client
Server
Protocol version  dec1073742097
 hex40000111
Data version 4553
Resource pack format 69.0
Data pack format 88.0
Minimum Java version Java SE 21
β—„β—„  1.21.8 1.21.9 1.21.10 β–Ίβ–Ί

β—„  1.21.9 Pre-Release 4

1.21.9 Release Candidate 1
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1.21.9 Release Candidate 1 (known as 1.21.9-rc1 in the launcher) is the first and only release candidate for Java Edition 1.21.9, released on September 25, 2025.[1]

Fixes

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2 issues fixed

From the 1.21.9 development versions

  • MC-302243 – Creakings can spawn with the spawnMonsters game rule set to false.

From the previous development version

  • MC-302278 – The texture in the middle of conduits is upside down.

Trivia

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  • This version has the same protocol version number as 25w41a. The two versions are not actually compatible; 1.21.9-rc1 throws a "Network Protocol Error" message when attempting to join a 25w41a world, and 25w41a crashes when attempting to join a 1.21.9-rc1 world.

Videos

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Video made by slicedlime:

References

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Navigation

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