Minecraft 1.18.1-pre1
Pre-releaseLegacy 1.xMinecraft 1.18.1-pre1 is a Java Edition pre-release released on 3 Dec 2021 under the classic 1.x numbering. Mojang lists Java 17 as the required runtime. It speaks network protocol 1073741885.

Minecraft 1.18.1 Pre-Release 1
We're now releasing the first pre-release for Minecraft 1.18.1. This will be a fairly small release that will fix a few stability issues and a few bugs. We aim to release this version at the end of next week. Happy mining! Technical Changes in 1.18.1 Pre-R
- Released
- 3 Dec 2021
- Requires Java
- Java 17+
- Protocol version
- 1073741885
- Data version
- 2861
- Version group
- 1.18
- Numbering
- Legacy (1.x)
- Server software
- 0 with builds
- Position
- #608 of 903
Official downloads
Served by Mojang. Verify the checksum before running anything.
| File | Size | SHA-1 | Download |
|---|---|---|---|
| Server jar | 44.2 MB | cd99e68b49c8… | piston-data.mojang.com ↗ |
| Client jar | 19.1 MB | 9561f774dcc8… | piston-data.mojang.com ↗ |
The catalogue on 1.18.1-pre1
Projects that name 1.18.1-pre1 in their own release metadata. Follow any of these to the full filtered list.
What runs on 1.18.1-pre1
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 1.18
23 versions in this group.
| Version | Type | Protocol | Released |
|---|---|---|---|
| 1.18.2 | Release | 758 | 28 Feb 2022 |
| 1.18.2-rc1 | Release candidate | 1073741897 | 25 Feb 2022 |
| 1.18.2-pre3 | Pre-release | 1073741896 | 23 Feb 2022 |
| 1.18.2-pre2 | Pre-release | 1073741895 | 21 Feb 2022 |
| 1.18.2-pre1 | Pre-release | 1073741894 | 18 Feb 2022 |
| 1.18.1 | Release | 757 | 10 Dec 2021 |
| 1.18.1-rc3 | Release candidate | 1073741888 | 10 Dec 2021 |
| 1.18.1-rc2 | Release candidate | 1073741887 | 8 Dec 2021 |
| 1.18.1-rc1 | Release candidate | 1073741886 | 7 Dec 2021 |
| 1.18.1-pre1 | Pre-release | 1073741885 | 3 Dec 2021 |
| 1.18 | Release | 757 | 30 Nov 2021 |
| 1.18-rc4 | Release candidate | 1073741884 | 29 Nov 2021 |
| 1.18-rc3 | Release candidate | 1073741883 | 26 Nov 2021 |
| 1.18-rc2 | Release candidate | 1073741882 | 26 Nov 2021 |
| 1.18-rc1 | Release candidate | 1073741881 | 25 Nov 2021 |
| 1.18-pre8 | Pre-release | 1073741880 | 24 Nov 2021 |
| 1.18-pre7 | Pre-release | 1073741879 | 23 Nov 2021 |
| 1.18-pre6 | Pre-release | 1073741878 | 22 Nov 2021 |
| 1.18-pre5 | Pre-release | 1073741877 | 19 Nov 2021 |
| 1.18-pre4 | Pre-release | 1073741876 | 17 Nov 2021 |
| 1.18-pre3 | Pre-release | 1073741875 | 17 Nov 2021 |
| 1.18-pre2 | Pre-release | 1073741874 | 16 Nov 2021 |
| 1.18-pre1 | Pre-release | 1073741873 | 11 Nov 2021 |
Questions about Minecraft 1.18.1-pre1
What Java version does Minecraft 1.18.1-pre1 require?
Minecraft 1.18.1-pre1 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 1.18.1-pre1 use?
Minecraft 1.18.1-pre1 speaks protocol 1073741885. A client and a server can only connect when their protocol numbers match.
Where do I download the Minecraft 1.18.1-pre1 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.