Minecraft 1.9.1-pre1

Pre-releaseLegacy 1.x

Minecraft 1.9.1-pre1 is a Java Edition pre-release released on 9 Mar 2016 under the classic 1.x numbering. Mojang lists Java 8 as the required runtime. It speaks network protocol 107.

Released: 9 Mar 2016
Requires Java: Java 8+
Protocol version: 107
Data version: 170
Version group: 1.9
Numbering: Legacy (1.x)
Server software: 0 with builds
Position: #284 of 903

Official downloads

Served by Mojang. Verify the checksum before running anything.

File	Size	SHA-1	Download
Server jar	8.4 MB	`04a6ca96d402…`	piston-data.mojang.com ↗
Client jar	8.3 MB	`23386d5d39a8…`	piston-data.mojang.com ↗

Versions that can connect to each other

Protocol 107 is shared by these versions, so their clients and servers can talk to each other.

1.9

The catalogue on 1.9.1-pre1

Projects that name 1.9.1-pre1 in their own release metadata. Follow any of these to the full filtered list.

Everything in 1.9

15 versions in this group.

Filter list

Version	Type	Protocol	Released
1.9.4	Release	110	10 May 2016
1.9.3	Release	110	10 May 2016
1.9.3-pre3	Pre-release	110	3 May 2016
1.9.3-pre2	Pre-release	110	27 Apr 2016
1.9.3-pre1	Pre-release	109	21 Apr 2016
1.9.2	Release	109	30 Mar 2016
1.9.1	Release	108	30 Mar 2016
1.9.1-pre3	Pre-release	108	11 Mar 2016
1.9.1-pre2	Pre-release	108	10 Mar 2016
1.9.1-pre1	Pre-release	107	9 Mar 2016
1.9	Release	107	29 Feb 2016
1.9-pre4	Pre-release	106	26 Feb 2016
1.9-pre3	Pre-release	105	24 Feb 2016
1.9-pre2	Pre-release	104	18 Feb 2016
1.9-pre1	Pre-release	103	17 Feb 2016

Questions about Minecraft 1.9.1-pre1

What Java version does Minecraft 1.9.1-pre1 require?

Minecraft 1.9.1-pre1 requires Java 8 or newer. Mojang publishes this in the version metadata, so an older runtime refuses to start it.

What protocol version does Minecraft 1.9.1-pre1 use?

Minecraft 1.9.1-pre1 speaks protocol 107, which it shares with 1.9. Clients and servers on the same protocol can connect to each other.

Where do I download the Minecraft 1.9.1-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

Full compatibility for 1.9.1-pre1Server software, loaders and the Java requirement in one place Java 8 downloadsVerified Temurin builds for Windows, macOS and Linux Everything in 1.9Snapshots, pre-releases and candidates in this group How 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.