How to Fix League of Legends failed to launch Error

You get "Error starting League of Legends" when starting League, followed by "Something unusual happened while trying to start League of Legends."

Or it tells you "Try closing and restarting" and an "OK" button. Followed by “if the issue persists, please contact our player support team.” Don't worry, today we will teach you how to solve it.

How to Fix League of Legends failed to launch Error

1. Verification of Program Closure:

Confirm Complete Shutdown: Ensure League of Legends is fully closed before proceeding. Check the system tray (hidden icons area) for any lingering LoL processes. Right-click on any such icons and select "Exit" to guarantee a complete shutdown.

2. Riot Vanguard Service Management:

Access Services Management: Utilize the Windows Search bar to locate "Run." Type "services.msc" and press Enter to launch the Services window.

Locate "vgc":  Navigate the service list and locate the service named "vgc" (Riot Vanguard).

Verify Service Status:  Right-click "vgc" and select "Properties" to check the service status.

3. Managing Riot Vanguard (as required):

Restart Service (if necessary): If the service isn't running, click the "Start" button. This initiates the Riot Vanguard service.

Reinstall Riot Vanguard (last resort): If issues persist after restarting the service, search online for specific instructions on reinstalling the Riot Vanguard service. Reinstallation can potentially resolve any corrupted files causing the launch issue. However, prioritize this step as a last resort.

4. Software Updates:

Maintain Client Updates: Ensure your League of Legends client is updated to the latest version. Updates often address bug fixes and compatibility issues that might be causing the launch error.

Windows Updates: Maintain your Windows installation current with the latest security patches and performance optimizations. Outdated systems can sometimes lead to software conflicts.

5. Advanced Troubleshooting (optional):

Run as Administrator:  Try launching League of Legends in administrator mode. Right-click the League of Legends icon and select "Run as administrator." This can sometimes resolve permission-related issues.

Temporary Firewall/Antivirus Disabling (with caution):  Temporarily disable your firewall or antivirus software to see if it's interfering with League of Legends. Remember to re-enable them afterward to maintain system security.

6. League of Legends Support:

Seek Additional Assistance (if needed): If the issue persists after following these steps, reach out to League of Legends support for further assistance. They may have additional troubleshooting steps or insights specific to your situation. Trained support personnel can analyze your situation and provide tailored solutions to get you back in the game.

This procedure should be able to resolve the "Error starting League of Legends" error and calmly continue your adventures in the League of Legends universe.