Rehberler
Fix "Outdated Server" and "Outdated Client" in Minecraft
Outdated server means the player's game is newer than the server. Outdated client means the game is older. You can fix it from either side: change the server's version, or change the version in the player's launcher.
See which version the server runs
Open your world in the panel and go to Software. The page says which software and version the world is running, for example Paper 1.21.4.
Change the server version
Make a backup first on Village or Kingdom (Backups → Create backup). Then:
- Open Software.
- Under Game version, pick the release you want.
- Click Apply version and confirm. The server restarts.
- Wait until the world shows Online before you join or change anything else.
What a version change keeps and clears
Changing the version recreates the container and keeps your world save. Installed modpacks are cleared so you can reinstall them for the new version.
A world loads on the same or a newer Minecraft version than it was made on. Going back to an older version can stop the world from loading, so update forward rather than back.
Let newer clients join without changing the server
On Paper or Purpur (Village and Kingdom) the ViaVersion plugin lets players on newer versions join an older server. Install it from Mods → Plugins: search for ViaVersion, add it, then click Apply to server. The server restarts once. See How to install plugins.
Modded servers (Fabric, Forge, NeoForge) cannot do this. Every player needs the same Minecraft and mod versions as the server.
Village and Kingdom include Backups, so you can update the version safely. Compare plans on the plans page.