warningJava ErrorsAffects: All versions
How to Fix java.lang.SecurityException
Fix SecurityException in Minecraft by re-downloading the mod from official sources like CurseForge or Modrinth.
Quick Fix
Re-download the mod from CurseForge or Modrinth. The jar file may have been modified.
Error Message
java.lang.SecurityException: Invalid signature file digestHow to Fix
1
Download the mod from its official CurseForge or Modrinth page
2
Delete the existing jar and replace with the fresh download
3
If the mod is open source, build it from source
4
Remove META-INF signature files from the jar if the mod is known safe
Common Causes
- Mod jar file has been tampered with or repackaged
- Downloaded mod from unofficial source
- Jar signing verification failure
Diagnostic Steps
- Delete the suspect mod jar
- Download from the official source
- Place in mods folder
- Restart
FAQ
Is it safe to download mods from sites other than CurseForge or Modrinth?
Stick to official sources. Third-party sites may inject malware or modify mod files, causing this error and posing security risks.