Minecraft: Java Edition ยท Patch release

Minecraft 1.12.2

1.12.2 closed twelve issues including a hopper item duplication bug and a private security issue. It is the final 1.12 release and the last version to use numeric block ids.

Released
Server needs
Java 8
Protocol
340
Start a 1.12.2 serverStart a free server

Seven days free, no card. Pick 1.12.2 when you create the server, or switch an existing one from the panel.

A patch of

Minecraft 1.12 World of Color Update

1.12, the World of Color Update, added concrete, glazed terracotta and coloured beds, plus parrots and the recipe book.

Everything 1.12 added

What changed in Minecraft 1.12.2

The fixes and changes of this release.

  • Fixes hopper item duplication within a chunk
  • Fixes a private security issue
  • Fixes ender pearl teleport coordinate errors
  • Final 1.12 release and a long lived modding target
  • Last version to use numeric block ids

Running a Minecraft 1.12.2 server

What the release means for whoever runs the server.

  • Requires Java 8 or newer
  • Protocol 340 and data version 1343; not compatible with 1.12 or 1.12.1
  • Fixes hopper item duplication inside a chunk
  • Closes a private security issue tracked as MC-120567
  • Last version before The Flattening removed numeric block ids

Before you update a world: take a backup. A world opened in 1.12.2 cannot be opened in an older version again. How backups work here.

1.12.2 on FadeHost

The right Java, set for you
A 1.12.2 server needs Java 8 or newer, and the panel starts it with a Java that fits. Nothing to install, nothing to pick.
Server software for 1.12.2
PaperSpigotVanillaForgeMohistMagma
Who can join
Players on 1.12.2. Other versions need plugins such as ViaVersion on a Paper server.
Start a 1.12.2 server

Questions about 1.12.2

When was Minecraft 1.12.2 released?

Minecraft: Java Edition 1.12.2 was released on September 18, 2017.

What Java version does a Minecraft 1.12.2 server need?

Java 8. On FadeHost the server starts with the right Java for its Minecraft version on its own, so there is nothing to install or switch.

What did Minecraft 1.12.2 change?

1.12.2 closed twelve issues including a hopper item duplication bug and a private security issue. It is the final 1.12 release and the last version to use numeric block ids.

Can players on another version join a 1.12.2 server?

Only players on 1.12.2 itself: its network protocol (340) is its own. A Paper server can let other versions in with plugins such as ViaVersion and ViaBackwards.

Can I update my world to Minecraft 1.12.2?

Yes. Take a backup, switch the server to 1.12.2 and start it: the world is converted on the first boot. A world opened in 1.12.2 cannot be opened in an older version again, so keep the backup until you are sure.

How do I start a Minecraft 1.12.2 server?

Create a server on FadeHost and pick 1.12.2 in the software list: Paper, Spigot, Vanilla, Forge, Mohist and Magma are there for this version. It is online in about a minute. The free tier runs a 2 GB server at no cost, and a paid server is sized to the RAM you need.

The release before

Minecraft 1.12 World of Color Update

June 7, 2017

The release after

Minecraft 1.13 Update Aquatic

July 18, 2018

Read on

Change a server's version

Version, software and loader build are one setting in the panel.

Java version errors

What the wrong Java looks like in the console, and why it does not happen here.

RAM calculator

How much memory a server needs, sized from servers measured on our nodes.

Every Minecraft version

All releases, what each one added and the Java it needs.

Release facts from the Minecraft Wiki:Java Edition 1.12.2. Minecraft is a trademark of Mojang; FadeHost is not affiliated with Mojang or Microsoft.