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Missing Region File

The server expects a region file that is not there. A chunk's .mca file is missing, so that area cannot load, often after files were moved, deleted, or a transfer was incomplete.

What does this error mean?
World terrain is stored in region (.mca) files under the region/ folder. A 'region file missing' error means a file the server needs is absent. Minecraft can usually regenerate missing terrain, but builds in that file are gone unless restored. 
Region file missing
Most Common Causes
  • A region file deleted or moved by mistake.
  • An incomplete world transfer/upload.
  • A backup restore that missed some files.
  • Disk issues losing files.
  • Manual cleanup that removed needed regions.
How To Diagnose
  1. Identify the missing region from the log (r.X.Z.mca).
  2. Check the region/ folder for that file.
  3. Confirm the world upload/transfer completed fully.
  4. Look for the file in a backup.
Recommended Fixes
  • Restore the region file
    Copy the missing r.X.Z.mca back from a backup to preserve builds.
  • Let it regenerate
    If no backup exists, the server regenerates that area as fresh terrain.
  • Re-transfer the world
    Re-upload the complete world if the transfer was partial.
  • Check the disk
    Investigate disk health if files are vanishing.
Analyze My Log
Frequently Asked Questions

It regenerates as new terrain. Original builds return only from a backup.

The error lists the region as r.X.Z.mca, that exact file is what is missing.

Most often an incomplete transfer or accidental deletion, compare against a backup.