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ViaBackwards Plugin for Minecraft 1.20.1, 1.21.1

Allow Java Edition clients with older versions to connect to your Minecraft server

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6 downloads
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Updated
Updated 21.10.2026

ViaBackwards

Installation

This plugin requires to have ViaVersion installed. Drag and drop both plugins in your plugin folder, and you are good to go.

Requires Java 17. See here how to update your installed Java version. As a last resort, you can download Java 8 downgraded builds from our ci.

Important: ViaBackwards cannot add new features to older clients. Certain features, like client-side attribute handling, will still break and cannot be fixed.

Supported Versions

Do you support 1.8 and lower? \ No, use ViaRewind or ProtocolSupport if you want backwards compatibility for 1.8 and lower.

Can I use this with Velocity/Bungee? \ Yes, you can also use both ViaBackwards and ViaVersion with Velocity. For BungeeCord, you need https://hangar.papermc.io/ViaVersion/ViaBungee

Clients with versions lower than 1.17 can't see blocks under y=0, will that ever be fixed? \ No.

How can I report issues and bugs? \ You can report bugs on the GitHub issue tracker. You can also use the Discussion section from the resource or send me a private message.

Why did you not implement this inside ViaVersion? \ The aim of ViaVersion is to allow a newer Minecraft client on an older server; by making it inside ViaVersion, people will expect us to also create full backwards compatibility in the future.

API

Maven:

viaversion-repo https://repo.viaversion.com/

com.viaversion viabackwards LATEST provided

  • Development builds
  • JavaDocs
  • Maven repository

How to install ViaBackwards

  1. A server on Paper

    The plugin runs on the server core for Minecraft 1.10–26.3; players do not need to install anything.

  2. File goes into the plugins folder

    Download the file ViaBackwards-5.12.2-SNAPSHOT.jar (1.4 MB) and put it into the server’s plugins folder.

  3. Restart the server

    On startup the plugin creates its own settings folder in plugins.

  4. Or use the “To hosting” button

    On Millida Hosting, the button at the top of the page uploads the file to your server and restarts it for you.

Versions

With dependencies

MinecraftLoaderFileDateActions
26.3Paper26.31.4 MB
26.3Paper26.31.4 MB
26.3Paper26.31.4 MB 2
26.3Paper26.31.4 MB
26.3Paper26.31.4 MB 1
26.3Paper26.31.4 MB
26.3Paper26.31.4 MB
26.3Paper26.31.4 MB

What it needs to run

  • Dependencyoptional
  • Dependencyrequired

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Author: ViaVersionLicense: GPLSource code

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