How to allow players to connect from any version on a Minecraft server

ViaVersion is a plugin for Minecraft that allows players to connect to servers using different game versions, bridging compatibility gaps between newer and older releases. Since its introduction, it has facilitated multiplayer experiences by enabling players with distinct client versions to interact seamlessly. The plugin ensures that Minecraft enthusiasts can join servers of their choice without being restricted by different versions.

Note: ViaVersion requires Spigot/Paper or Bukkit servers. It can also be installed on Fabric-Cardboard Servers.

Note: Players connecting to servers with outdated clients may experience missing content from newer versions.

How to Allow Players to Connect from Any Version on a Minecraft Server

Download the required plugin and desired add-ons below.

ViaVersion - This core plugin is required by all others listed and allows newer client versions to connect to older server versions. 1.8 - 1.20.x

ViaBackwards - This add-on expands compatibility and allows older client versions to connect to newer servers. 1.9 - 1.20.x

ViaRewind - ViaRewind goes even further, allowing players running 1.7 or 1.8 clients to connect to modern servers. 1.7+
Login to the QuickHost Game Panel.
Stop the server.
On the left select Files.
Open the Plugins folder.
Upload the .jar files from Step 1.
Start the server.