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Download Vanilla 1.21.9 Server

The Vanilla server JAR for Minecraft 1.21.9, direct from the official source. Build details, release date and Java requirements below.

Java required

Java 21

Released

Sep 30, 2025

File size

56 MB

Channel

Stable

SHA-1 checksum

11e54c2081420a4d49db3007e66c80a22579ff2a

Latest stable build

1.21.9

Vanilla

Download JAR

Setup

Start script (Linux/macOS)

java -Xms2G -Xmx2G -jar server.jar nogui

Start script (Windows)

java -Xms2G -Xmx2G -jar server.jar nogui
pause

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Other Minecraft 1.21 builds of Vanilla

Other builds in the 1.21.x line. The newest stable is selected by default above.

1.21.111.21.101.21.81.21.71.21.61.21.51.21.4
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