warningJava ErrorsAffects: All versions
How to Fix ZipException: Invalid LOC Header
Fix ZipException by re-downloading the corrupted jar file from its official source.
Quick Fix
Re-download the corrupted mod jar from CurseForge or Modrinth.
Error Message
java.util.zip.ZipException: invalid LOC header (bad signature)How to Fix
1
Delete and re-download the corrupted jar
2
Check all jars by trying to open them with a zip tool
3
Scan disk for file system errors
Common Causes
- Corrupted jar file in the mods folder
- Incomplete download of a mod
- File system corruption affecting jar files
Diagnostic Steps
- Identify the jar from the error
- Delete it
- Re-download from official source
- Restart
FAQ
How do I know which jar is corrupted?
The error message usually names the file. If not, remove mods one by one until it works.