warningLauncher ErrorsAffects: All versions
How to Fix Corrupted Assets Index
Fix Corrupted Assets Index by deleting the indexes folder and letting the launcher re-download it.
Quick Fix
Delete the .minecraft/assets/indexes/ folder and restart the launcher to re-download.
Error Message
Failed to load asset index / Asset index corruptedHow to Fix
1
Delete .minecraft/assets/indexes/
2
Restart the launcher to trigger re-download
3
If persistent, delete the entire assets folder
4
Check disk health
Common Causes
- Asset index JSON file corrupted during download
- Disk error corrupting the index file
- Incomplete launcher update
Diagnostic Steps
- Close the launcher
- Delete .minecraft/assets/indexes/
- Reopen launcher
- Let it re-download
FAQ
Will I lose game data?
No. Asset indexes just tell the launcher which files to download. Worlds, settings, and mods are unaffected.