criticalServer ErrorsAffects: All versions
How to Fix Cannot Save World / Save Failed
Fix Cannot Save World by freeing disk space, fixing file permissions, and adding antivirus exclusions.
Quick Fix
Check available disk space with df -h (Linux) or dir (Windows). Free space or expand the disk.
Error Message
An error occurred while saving the world / Failed to save chunkHow to Fix
1
Free disk space - remove old backups, logs, and unused worlds
2
Check file permissions: chown -R minecraft:minecraft /server/
3
Add the server folder to antivirus exclusions
4
Avoid running servers on network drives
Common Causes
- Disk full
- File permission denied
- Antivirus locking files
- Network drive disconnected
Diagnostic Steps
- Check disk space: df -h or dir
- Check file permissions
- Add antivirus exclusion
- Test writing to the directory manually
FAQ
How much disk space does a server need?
At minimum 2-5GB free. Large worlds with many chunks can grow to 10-50GB over time.