Compatibility
What works with Minecraft Build 21019909
Released 2 Dec 2025. Everything below comes from the projects' own published data, and each row says how we know.
Java requirement
Mojang does not publish a Java requirement for this version.
Server software
No server software in our catalogue has published a build for Build 21019909. For a snapshot that is normal: server projects usually wait for the full release.
Frequently asked
Which server software supports Build 21019909?
No server software in our catalogue has published a build for Build 21019909 yet.