FabricDownload Fabric 1.21.9 Server
The Fabric 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
Build
0.19.5
Channel
Stable
Latest stable build
1.21.9
Build 0.19.5
Download JARGet a Fabric 1.21.9 server online
No Java install, no port forwarding. Pick Fabric 1.21.9 in our panel and your friends can join right away.
See server plansWhat's new in Minecraft 1.21.9
Minecraft 1.21.9 was released on Sep 30, 2025.
- New features
- 172
- Changes
- 109
- Technical changes
- 34
- Bug fixes
- 157
Figures taken from the official release notes for this version.
Setup
Start script (Linux/macOS)
java -Xms4G -Xmx4G -XX:+UseG1GC -jar fabric-server-launch.jar noguiStart script (Windows)
java -Xms4G -Xmx4G -XX:+UseG1GC -jar fabric-server-launch.jar nogui
pause