infoMod ErrorsAffects: All versions
How to Fix Invalid Mod Configuration
Fix Invalid Mod Configuration by deleting the broken config file and letting it regenerate with defaults.
Quick Fix
Delete the mod's config file and restart. It will regenerate with defaults.
Error Message
Failed to load config for mod X / Invalid configuration valueHow to Fix
1
Delete the config file from config/ folder
2
Restart the game to regenerate defaults
3
If you need custom values, edit carefully after regeneration
4
Use the in-game config screen if the mod provides one
Common Causes
- Manual config editing introduced syntax errors
- Config format changed after mod update
- Config file corrupted
Diagnostic Steps
- Find the mod's config file in config/ folder
- Back it up, then delete it
- Start the game to generate a fresh config
- Re-apply your changes
FAQ
Where are mod configs stored?
Usually in .minecraft/config/ for client mods and server/config/ for server-side mods.