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Stop repeated restarts and restore the newest known-good backup when a world is damaged. Chunk or world repair can permanently remove terrain, entities, containers, and player changes.

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Signs of possible corruption

  • Startup stops while loading the world or a specific dimension.
  • The console repeatedly names a chunk, region, level.dat, or database file.
  • Entering one area crashes the server or disconnects every nearby player.
  • A world loads as new, loses a dimension, or reports unreadable data after an interrupted write.
These symptoms can also come from an incompatible Minecraft version, mod, plugin, or Bedrock add-on. Preserve the first relevant console error before changing files.

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Recover safely

1

Stop automatic restarts

Leave the server offline so it does not keep writing to the damaged world or overwrite useful logs.
2

Preserve the current state

Download the world and relevant logs. Keep this diagnostic copy even when you plan to restore a backup.
3

Confirm the active world

Check the selected world name and folder structure. A wrong level-name or an extra wrapper folder can look like missing or damaged world data.
4

Restore a known-good backup

Choose the newest backup created before the first corruption symptom. Follow Create and restore backups.
5

Start and test carefully

Watch the full startup, then test the affected dimension or area before allowing normal play.

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When only one chunk or region is damaged

A specialist world-repair tool may be able to remove or rebuild only the affected region. Work on a downloaded copy, verify the edition and world format, and keep the untouched original. Removing a region regenerates that terrain and permanently deletes builds and data inside it.
Do not delete a region, Bedrock database file, level.dat, or dimension folder based only on a guessed filename. Restore a backup or ask support to interpret the exact console error.
If corruption returns after a successful restore, investigate disk-space exhaustion, unsafe force-stops, incompatible world-generation content, or a plugin, mod, or add-on writing invalid data.