warningLauncher ErrorsAffects: All versions
How to Fix Corrupted Launcher Profile
Fix Corrupted Launcher Profile by deleting launcher_profiles.json and letting the launcher recreate it.
Quick Fix
Delete launcher_profiles.json from the .minecraft folder. The launcher will recreate it.
Error Message
Unable to load profiles / launcher_profiles.json corruptedHow to Fix
1
Close the launcher completely
2
Delete .minecraft/launcher_profiles.json
3
Reopen the launcher (it will create a new file)
4
Re-create your game profiles
Common Causes
- launcher_profiles.json has syntax errors
- Launcher crashed while saving profile data
- Manual editing of profile file introduced errors
Diagnostic Steps
- Close the launcher
- Navigate to .minecraft/
- Delete launcher_profiles.json
- Reopen the launcher
- Set up your profiles again
FAQ
Will I lose my worlds?
No. Deleting launcher_profiles.json only resets your launcher profiles (version, JVM args, etc.). Worlds and mods are not affected.