Arclight for Minecraft 1.21.11
4 builds of Arclight published for Minecraft 1.21.11, newest first. Every download links to the project’s own release.
- Latest build
- #4
- Java required
- Java 21 or newer
- Builds
- 4
- Newest published
- 13 Oct 2026
Arclight builds for 1.21.11
Newest first. The checksum is the project's own, where it publishes one.
| Build | Channel | Published | Size | Download |
|---|---|---|---|---|
| #4 | beta | 13 Oct 2026 | 8.7 MB | server.jar |
| #3 | beta | 13 Oct 2026 | 9.1 MB | server.jar |
| #2 | beta | 22 Sept 2026 | 8.7 MB | server.jar |
| #1 | beta | 22 Sept 2026 | 9.1 MB | server.jar |
Arclight on 1.21.11: common questions
Does Arclight support Minecraft 1.21.11?
Yes. 4 builds have been published for 1.21.11, the newest being build 4. This is not a declared claim: each build below is a real file the project released for this version.
Which Java version do I need for Arclight 1.21.11?
Java 21 or newer. The requirement comes from Minecraft 1.21.11 itself rather than from Arclight, so it applies to any server software running this version. A newer Java than that is fine.
Which Arclight build should I run on 1.21.11?
The newest one, build 4, published 21 h ago. Later builds for the same Minecraft version are bug fixes and performance work, so there is rarely a reason to run an older one deliberately.
Is this download official?
Yes. Every link points at Arclight's own release or API. MCReference does not mirror, re-host or repackage a jar; where the project publishes a SHA-256 we show it so you can verify the file you got.
Is this information wrong or missing something? .