Minecraft:Java Edition 1.21.11 Release Candidate 2

1.21.11 Release Candidate 2 (known as 1.21.11-rc2 in the Minecraft:launcher) is the second Minecraft:release candidate for Minecraft:Java Edition 1.21.11, released on December 5, 2025, which fixes a crash.<ref>Template:Mcnet</ref>

A separate Minecraft:unobfuscated version of 1.21.11 Release Candidate 2 was released, titled 1.21.11 Release Candidate 2 Unobfuscated (or 1.21.11-rc2_unobfuscated when in the launcher). This is an experimental version released in preparation for obfuscation being removed from Template:JE clients and servers.<ref>Template:Mcnet</ref>

Fixes

• Fixed a crash issue affecting some players.
  • Fixed by adding safety checks for block and chunk positions while generating or loading terrain.<ref name="diff">Template:Citation</ref>