Minecraft 23w42a
SnapshotLegacy 1.xMinecraft 23w42a is a Java Edition snapshot released on 18 Oct 2023 under the classic 1.x numbering. Mojang lists Java 17 as the required runtime. It speaks network protocol 1073741981.

Minecraft Snapshot 23w42a
Hey! Today we bring you the first of the features we've shown you during Minecraft Live last weekend: the Crafter! Experimental Features Crafter The Crafter is a new block that enables the crafting of items and blocks via Redstone The Crafter will eject o
- Released
- 18 Oct 2023
- Requires Java
- Java 17+
- Protocol version
- 1073741981
- Data version
- 3684
- Version group
- 23w
- Numbering
- Legacy (1.x)
- Server software
- 0 with builds
- Position
- #711 of 903
Official downloads
Served by Mojang. Verify the checksum before running anything.
| File | Size | SHA-1 | Download |
|---|---|---|---|
| Server jar | 46.6 MB | b5f423ba1c41… | piston-data.mojang.com ↗ |
| Client jar | 23.0 MB | f187037d38f5… | piston-data.mojang.com ↗ |
The catalogue on 23w42a
Projects that name 23w42a in their own release metadata. Follow any of these to the full filtered list.
What runs on 23w42a
Builds are counted from each project's own API; declared support comes from the loader's metadata.
| Software | Latest build | Published | Checksum | Download |
|---|---|---|---|---|
| Fabric Loader | 0.19.3 | Not build based | declared | loader |
| Quilt Loader | 0.30.1-beta.2 | Not build based | declared | loader |
Everything in 23w
25 versions in this group.
| Version | Type | Protocol | Released |
|---|---|---|---|
| 23w51b | Snapshot | 1073741994 | 18 Dec 2023 |
| 23w51a | Snapshot | Unknown | 18 Dec 2023 |
| 23w46a | Snapshot | 1073741987 | 16 Nov 2023 |
| 23w45a | Snapshot | 1073741986 | 8 Nov 2023 |
| 23w44a | Snapshot | 1073741985 | 1 Nov 2023 |
| 23w43b | Snapshot | 1073741984 | 26 Oct 2023 |
| 23w43a | Snapshot | 1073741983 | 25 Oct 2023 |
| 23w42a | Snapshot | 1073741981 | 18 Oct 2023 |
| 23w41a | Snapshot | 1073741980 | 11 Oct 2023 |
| 23w40a | Snapshot | 1073741978 | 4 Oct 2023 |
| 23w35a | Snapshot | 1073741971 | 30 Aug 2023 |
| 23w33a | Snapshot | 1073741970 | 17 Aug 2023 |
| 23w32a | Snapshot | Unknown | 9 Aug 2023 |
| 23w31a | Snapshot | Unknown | 1 Aug 2023 |
| 23w18a | Snapshot | Unknown | 3 May 2023 |
| 23w17a | Snapshot | Unknown | 26 Apr 2023 |
| 23w16a | Snapshot | Unknown | 20 Apr 2023 |
| 23w14a | Snapshot | Unknown | 5 Apr 2023 |
| 23w13a | Snapshot | Unknown | 29 Mar 2023 |
| 23w12a | Snapshot | Unknown | 22 Mar 2023 |
| 23w07a | Snapshot | Unknown | 15 Feb 2023 |
| 23w06a | Snapshot | Unknown | 8 Feb 2023 |
| 23w05a | Snapshot | Unknown | 1 Feb 2023 |
| 23w04a | Snapshot | Unknown | 24 Jan 2023 |
| 23w03a | Snapshot | 1073741939 | 18 Jan 2023 |
Questions about Minecraft 23w42a
What Java version does Minecraft 23w42a require?
Minecraft 23w42a requires Java 17 or newer. Mojang publishes this in the version metadata, so an older runtime refuses to start it.
What protocol version does Minecraft 23w42a use?
Minecraft 23w42a speaks protocol 1073741981. A client and a server can only connect when their protocol numbers match.
Where do I download the Minecraft 23w42a 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.
Go deeper
Metadata from Mojang’s official version manifest. Protocol and data versions from the PrismarineJS minecraft-data project.