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Download Minecraft 1.21.11

Official client and server jar downloads directly from Mojang CDN with verified SHA-1 checksums.

Server Software53.7 MB

Official Server JAR

Official vanilla server jar from Mojang. Ready to deploy on local or dedicated hosting.

SHA-1 Checksum:64bb6d763bed…
Download server.jar
Game Client29.7 MB

Official Client JAR

Official vanilla client jar package used by the Minecraft launcher.

SHA-1 Checksum:ba2df812c2d1…
Download client.jar

Version Specifications

Release Date
9 Dec 2025
Java Requirement
Java 21+
Protocol Version
774
Data Version
4671

Optimized Server Software for this Version

High-performance community forks offering plugin support and optimizations

Paper

High-performance Spigot fork with Paper API and exploit fixes.

Purpur

Paper drop-in replacement with extensive gameplay configurability.

Fabric

Lightweight modular mod loader with immediate version support.

Space NodePartner

Host Minecraft 1.21.11 servers

Deploy a Minecraft 1.21.11 server in under a minute. Installed, tuned and ready to play.

  • Instant deployment
  • Automatic updates
  • Ryzen CPUs
  • NVMe SSD
Deploy a serverFrom €0.90 per GB

Frequently Asked Questions

Where do the Minecraft 1.21.11 download links come from?

All downloads are linked directly to Mojang's official CDN (piston-data.mojang.com). We do not mirror or modify jar files. Checksums are provided so you can verify the integrity of the downloaded file.

What Java version do I need for Minecraft 1.21.11?

Minecraft 1.21.11 requires Java 21 or newer to run.

How do I run the Minecraft 1.21.11 server?

Download the server.jar file, place it in an empty directory, and launch it via terminal or command prompt using: java -Xmx2G -Xms2G -jar server.jar nogui. Accept the EULA in eula.txt after the first launch.

← View full 1.21.11 changelog and compatibility matrixAll versions download list →

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