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Minecraft 25w04a

SnapshotLegacy 1.x

Minecraft 25w04a is a Java Edition snapshot released on 22 Jan 2025 under the classic 1.x numbering. Mojang lists Java 21 as the required runtime. It speaks network protocol 1073742055.

Official artwork published by Mojang for Minecraft 25w04a

Minecraft Snapshot 25w04a

It's time for another snapshot! To kick things off, we are reverting the fixes for MC-271065 and MC-152728.This week's snapshot also comes with a whole slew of datapack updates, including new components and item model capabilities. If you like to play arou
Image and summary: Mojang Studios, from the official Java Edition patch notes. Not affiliated with Mojang.
Released
22 Jan 2025
Requires Java
Java 21+
Protocol version
1073742055
Data version
4308
Version group
25w
Numbering
Legacy (1.x)
Server software
1 with builds
Position
#794 of 903

Official downloads

Served by Mojang. Verify the checksum before running anything.

FileSizeSHA-1Download
Server jar54.4 MB28a9d30423b1…piston-data.mojang.com ↗
Client jar27.3 MB6102118fc64f…piston-data.mojang.com ↗

The catalogue on 25w04a

Projects that name 25w04a in their own release metadata. Follow any of these to the full filtered list.

What runs on 25w04a

Builds are counted from each project's own API; declared support comes from the loader's metadata.

Full compatibility
SoftwareLatest buildPublishedChecksumDownload
Sponge#127 Jul 2026Not publishedjar ↗
Sponge25w04a-15.0.0-RC2031Not build basedinferredloader
Fabric Loader0.19.3Not build baseddeclaredloader
Quilt Loader0.30.1-beta.2Not build baseddeclaredloader

Everything in 25w

32 versions in this group.

Filter list
VersionTypeProtocolReleased
25w46aSnapshot107374210211 Nov 2025
25w45aSnapshot10737421014 Nov 2025
25w44aSnapshot107374210028 Oct 2025
25w43aSnapshot107374209921 Oct 2025
25w42aSnapshot107374209814 Oct 2025
25w41aSnapshot10737420979 Oct 2025
25w37aSnapshot10737420929 Sept 2025
25w36bSnapshot10737420912 Sept 2025
25w36aSnapshot10737420902 Sept 2025
25w35aSnapshot107374208926 Aug 2025
25w34bSnapshot107374208819 Aug 2025
25w34aSnapshot107374208719 Aug 2025
25w33aSnapshot107374208612 Aug 2025
25w32aSnapshot10737420855 Aug 2025
25w31aSnapshot107374208429 Jul 2025
25w21aSnapshot107374207520 May 2025
25w20aSnapshot107374207413 May 2025
25w19aSnapshot10737420736 May 2025
25w18aSnapshot107374207229 Apr 2025
25w17aSnapshot107374207122 Apr 2025
25w16aSnapshot107374207015 Apr 2025
25w15aSnapshot10737420698 Apr 2025
25w10aSnapshot10737420625 Mar 2025
25w09bSnapshot107374206127 Feb 2025
25w09aSnapshot107374206026 Feb 2025
25w08aSnapshot107374205919 Feb 2025
25w07aSnapshot107374205813 Feb 2025
25w06aSnapshot10737420575 Feb 2025
25w05aSnapshot107374205629 Jan 2025
25w04aSnapshot107374205522 Jan 2025
25w03aSnapshot107374205415 Jan 2025
25w02aSnapshot10737420538 Jan 2025

Questions about Minecraft 25w04a

What Java version does Minecraft 25w04a require?

Minecraft 25w04a requires Java 21 or newer. Mojang publishes this in the version metadata, so an older runtime refuses to start it.

What protocol version does Minecraft 25w04a use?

Minecraft 25w04a speaks protocol 1073742055. A client and a server can only connect when their protocol numbers match.

Where do I download the Minecraft 25w04a server jar?

Mojang hosts it directly. This page links to the official file with its SHA-1 checksum and size, so you can verify the download before you run it. We do not mirror or repackage it.

Which server software supports Minecraft 25w04a?

Sponge publish builds for 25w04a. Each one is listed with its build number and checksum.

Go deeper

Full compatibility for 25w04aServer software, loaders and the Java requirement in one placeJava 21 downloadsVerified Temurin builds for Windows, macOS and LinuxEverything in 25wSnapshots, pre-releases and candidates in this groupHow Minecraft version numbers workWhy 1.21 was followed by 26.1, and what happened to 1.22

Metadata from Mojang’s official version manifest. Protocol and data versions from the PrismarineJS minecraft-data project.