League of Legends won't launch due to compatibility mode (ChatGPT fix)

1. Check all LoL-related executable files Right-click each file one by one → Properties → Compatibility and check:

• ✅ Uncheck “Run this program in compatibility mode for:”
• ✅ If “Run this program as an administrator” is checked, uncheck it too.

Files to check:

• RiotClientServices.exe
• RiotClientUx.exe
• RiotClientUxRender.exe
• LeagueClient.exe
• LeagueClientUx.exe
• LeagueClientUxRender.exe

Typical locations:

• C:\Riot Games\Riot Client
• C:\Riot Games\League of Legends

2. Delete any leftover compatibility settings in the registry Win+R then type regedit and run it. Navigate to:

HKEY_CURRENT_USER └ Software     └ Microsoft        └ Windows NT           └ CurrentVersion              └ AppCompatFlags                 └ Layers

If you see any Riot or League-related paths here, delete them. Then do the same at: Navigate to:

HKEY_LOCAL_MACHINE └ Software     └ Microsoft        └ Windows NT           └ CurrentVersion              └ AppCompatFlags                 └ Layers

Check here too.

3. Completely remove and reinstall Riot Client

Don't just uninstall from Control Panel — also delete the folder itself. Delete:

C:\Riot Games

Then also delete:

코드

C:\ProgramData\Riot Games

After deleting both, reinstall Riot Client.

4. Check Windows settings

Go to Settings → System → Troubleshoot → Other troubleshooters, then

run the Program Compatibility Troubleshooter to see if there are any applied settings.