Allows the connection of older clients to newer server versions for Minecraft servers.
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Latest Release Build Status Discord

Allows older Minecraft client versions to connect to newer server versions.

Requires ViaVersion to be installed..

Supported Versions

As a plugin, ViaBackwards runs on servers on releases 1.10-latest. Versions from the dev branch will also support the latest snapshot. You can also use ViaBackwards in ViaFabric or ViaFabricPlus.

See HERE for an overview of the different Via* projects.

Releases/Dev Builds

You can find releases in the following places:

Dev builds for all of our projects are on our Jenkins server:

Known issues

  • 1.17+ min_y and height world values that are not 0/256 are not supported. Clients older than 1.17 will not be able to see or interact with blocks below y=0 and above y=255
  • <1.17 clients on 1.17+ servers might experience inventory desyncs on certain inventory click actions
  • Sound mappings are incomplete (see here)
  • <1.19.4 clients on 1.20+ servers won't be able to use the smithing table, this can be fixed by installing AxSmithing


List of contributors:


After cloning this repository, build the project with Gradle by running ./gradlew build and take the created jar out of the build/libs directory.


This project is licensed under the GNU General Public License Version 3.

Special Thanks

YourKit supports open source projects with innovative and intelligent tools for monitoring and profiling Java and .NET applications. YourKit is the creator of YourKit Java Profiler, YourKit .NET Profiler, and YourKit YouMonitor.