Fix League of Legends Critical Error: League of Legends Critical Error – Troubleshooting Guide (League of Legends)

The “League of Legends Critical Error” is a frustrating issue that can prevent you from playing the game. This guide will help you diagnose and resolve this error, covering common causes and providing step-by-step fixes. We’ll walk through everything from basic checks to more advanced troubleshooting steps. Please read through all sections before attempting any fixes, and always back up important data if possible.

🧐 Causes

Several factors can trigger a League of Legends Critical Error. Here’s a breakdown of the most common culprits:

• Corrupted Game Files: This is a frequent cause. Game files can become damaged during downloads, updates, or due to system instability.
• Outdated Graphics Drivers: Incompatible or outdated graphics drivers are a major source of problems, especially with newer game updates.
• Conflicting Software: Antivirus programs, firewalls, overlays (like Discord or Steam overlays), and other applications can sometimes interfere with League of Legends.
• Hardware Issues: While less common, problems with your RAM, CPU, or GPU can lead to critical errors.
• Operating System Issues: Corrupted system files or outdated operating systems can also contribute.
• DirectX Issues: League of Legends relies on DirectX. Problems with DirectX installation or versions can cause errors.
• League of Legends Client Issues: Occasionally, the League of Legends client itself can have bugs or errors.

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🔧 Fixes

Let’s move on to the fixes. We’ll start with the simplest solutions and progress to more complex ones. Try each fix individually and test League of Legends after each attempt to see if the error is resolved.

1. Basic Checks & Restart

• Restart Your Computer: A simple restart can often resolve temporary glitches.
• Check Your Internet Connection: Ensure you have a stable internet connection.
• Verify Game Files: In the League of Legends client, go to “Launch” -> “Settings” -> “Repair.” This will scan and repair any corrupted game files.

2. Update Graphics Drivers

• Download the Latest Drivers: Visit the website of your GPU manufacturer (Nvidia, AMD, or Intel) and download the latest drivers for your graphics card.
• Perform a Clean Installation: During the driver installation, choose the “Custom” or “Advanced” option and select “Perform a clean installation.” This removes older driver files that might be causing conflicts.

3. Disable Conflicting Software

• Temporarily Disable Antivirus/Firewall: Disable your antivirus and firewall temporarily to see if they are interfering. Remember to re-enable them afterward.
• Disable Overlays: Disable overlays from programs like Discord, Steam, and other gaming utilities.
• Close Unnecessary Background Applications: Close any programs you aren’t actively using.

4. DirectX Troubleshooting

• Reinstall DirectX: Download the DirectX End-User Runtime Web Installer from the Microsoft website and run it.
• Update DirectX: Ensure your operating system has the latest DirectX version. Windows Update usually handles this.

5. Advanced Fixes

• Run League of Legends as Administrator: Right-click the League of Legends executable and select “Run as administrator.”
• Check System File Integrity: Open Command Prompt as administrator and run the command `sfc /scannow`. This will scan and repair corrupted system files.
• Reinstall League of Legends: As a last resort, uninstall and reinstall League of Legends.
• Check RAM: Use a memory diagnostic tool (like Windows Memory Diagnostic) to check for RAM errors.