Minecraft 1.15.1 Pre-Release 1

We are going to be releasing Minecraft Java Edition 1.15.1 to fix some critical issues in version 1.15. We are now releasing the first (and possibly only) pre-release.

Changes in 1.15.1 Pre-Release 1

• Optimized chunk rendering performance, especially for chunks with many different block states
• Fixed an error spammed to the game's log files caused by custom spawner blocks spawning villagers
• Improved network handling of invalid Biome ids
• Fixed a crash in the Realms screen
• Fixed bugs

Fixed bugs in 1.15.1 Pre-Release 1

• MC-167530 - Anvils causing java.lang.StackOverflowError
• MC-167482 - Corrupt chunk causes force upgrading a world to fail

Get the Pre-Release

To install the pre-release, open up the Minecraft Launcher and enable snapshots in the "Installations" tab.

Pre-releases can corrupt your world, please backup and/or run them in a different folder from your main worlds.

Cross-platform server jar:

• Minecraft server jar

Report bugs here:

• Minecraft issue tracker!

Want to give feedback?

• Head over to our feedback website or come chat with us about it on the official Minecraft Discord.