Fortnite LS-0013
What is this error?
Fortnite launcher failed to start the game. The Epic Games Launcher couldn't launch the Fortnite executable.
Common causes
- corrupted game files
- antivirus blocking Fortnite
- Epic Games Launcher bug
- EasyAntiCheat issue
- insufficient permissions
How to fix it
- Verify game files
- run as administrator
- repair EasyAntiCheat
- whitelist in antivirus
Too many steps? Crashless can diagnose this automatically — checks your drivers, temps, VRAM, and 400+ known error patterns.
Get free AI diagnosis Detailed analysis
Fortnite error LS-0013 means the Epic Games Launcher failed to start Fortnite. The launcher can find the game files but can't execute them.
How to fix it:
- Verify game files: in Epic Games Launcher, click the three dots next to Fortnite > Manage > Verify
- Run Epic Games Launcher as Administrator
- Add the Fortnite and Epic Games folders to your antivirus exclusions — antivirus commonly blocks game executables
- Repair EasyAntiCheat: navigate to Fortnite's installation folder > EasyAntiCheat > run EasyAntiCheat_Setup.exe > Repair
- Delete Fortnite's webcache: go to %LOCALAPPDATA% > FortniteGame > Saved > webcache, delete the folder
- Close all Epic Games processes in Task Manager, then relaunch
- Reinstall Epic Games Launcher if the error persists
- Make sure your Windows is fully updated
When to seek help
If this error keeps happening after trying the fixes above, it may point to a deeper hardware or system issue. Consider professional help if:
- The crash occurs across multiple games or applications
- You see the same error after a clean Windows install
- Your PC is less than a year old (could be a warranty issue)
- You smell burning or hear unusual sounds from your PC
Or let Crashless do the deep analysis for you -- our AI checks drivers, temps, event logs, and 400+ known patterns automatically.
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