League of Legends Crashing? Fixes That Actually Work

League of Legends crashing—whether at the client, during champion select, or mid-game—is a common issue that can stem from outdated drivers, corrupted game files, or incompatible background software. This guide walks you through the most effective fixes, from quick checks to deeper system-level solutions, so you can get back to the Rift without reinstalling everything.

Why Does League of Legends Crash?

League of Legends is a relatively lightweight game, but it still relies on your system’s graphics drivers, DirectX, and a stable internet connection. Crashes usually fall into one of these categories:

• Client crashes (the launcher freezes or closes) often come from corrupted cache files or outdated client versions.
• In-game crashes (the game closes to desktop) are frequently tied to GPU driver issues, overheating, or memory leaks.
• Full system freezes (PC locks up entirely) point to hardware stress, power supply problems, or outdated BIOS.

Knowing which type you’re experiencing helps narrow down the fix. For example, a crash only during team fights might indicate a graphics setting too high for your hardware, while a crash on launch often means a file integrity problem.

Quick Fixes to Try First

Before diving into advanced troubleshooting, try these simple steps—they resolve a surprising number of crashes:

1. Restart your computer and router. A fresh boot clears temporary memory, and a router restart fixes connection-related disconnects.
2. Run League of Legends as administrator. Right-click the game shortcut, select “Run as administrator,” and confirm any UAC prompts. This prevents permission-related crashes.
3. Disable fullscreen optimizations. Right-click the game’s .exe file (usually in Riot Games\League of Legends), go to Properties → Compatibility, and check “Disable fullscreen optimizations.”
4. Close background overlays. Discord, GeForce Experience, and Xbox Game Bar overlays can conflict with the game. Disable them temporarily to test.

Update Graphics Drivers and Windows

Outdated or corrupted GPU drivers are the #1 cause of in-game crashes. Here’s how to handle it:

• NVIDIA users: Open GeForce Experience or go to NVIDIA’s driver download page. Use “Clean Installation” if available.
• AMD users: Use the AMD Software: Adrenalin Edition app or the AMD driver auto-detect tool.
• Intel integrated graphics: Download drivers from Intel’s official site, not Windows Update.

After updating, also check Windows Update for optional updates—DirectX and .NET Framework updates often fix underlying issues. Restart your PC after driver installation; a reboot is required for changes to take effect.

Repair or Reinstall the Game Files

Corrupted game files are another frequent culprit. Riot’s client has a built-in repair tool:

1. Open the Riot Client (the launcher for League of Legends).
2. Click your profile icon in the top-right corner.
3. Select “Settings” → “Repair” (or “Verify” depending on your region).
4. Wait for the process to complete—it may take 10-30 minutes.

If that doesn’t work, a full reinstall is the next step. Uninstall via Windows Settings, then delete any remaining folders in Riot Games and %LocalAppData%\Riot Games. Reinstall from the official site. This is time-consuming but resolves nearly all file-related crashes.

Adjust In-Game Settings to Reduce Crashes

Sometimes the game crashes because your hardware can’t handle the settings. Lowering these specific options can improve stability:

• Graphics quality: Set to “Medium” or “Low” if you have an older GPU.
• Shadow quality: Shadows are GPU-intensive; turn them off or set to Low.
• Effects quality: Lower this if you crash during heavy team fights.
• Resolution: Run at your monitor’s native resolution, but lower it to 1366×768 or 1280×720 if crashes persist.
• Frame rate cap: Uncapped FPS can overheat your GPU. Set it to 60 or 144 depending on your monitor’s refresh rate.

Also, disable “V-Sync” if it’s causing input lag, but note that some systems crash with V-Sync on. Test changes one at a time to isolate the problem.

Check for Overheating and Hardware Issues

Overheating is a silent killer. League of Legends isn’t demanding, but a dusty laptop or a failing fan can cause crashes after 20-30 minutes of play. Use free tools like MSI Afterburner or HWMonitor to check your CPU and GPU temperatures. Normal ranges:

• CPU: 40-70°C idle, 70-85°C under load.
• GPU: 30-50°C idle, 60-85°C under load.

If temps exceed 90°C, clean your fans, replace thermal paste (if you’re comfortable), or use a cooling pad for laptops. Also, check your RAM with Windows Memory Diagnostic (search “Windows Memory Diagnostic” in Start menu) if crashes are random and frequent.

Network and DNS Issues That Cause Crashes

Some “crashes” are actually disconnects that kick you to the client. If you see “Attempting to Reconnect,” the problem is your network:

• Use a wired connection instead of Wi-Fi for a stable ping.
• Change your DNS server to Google (8.8.8.8) or Cloudflare (1.1.1.1) to prevent DNS-related timeouts.
• Disable IPv6 on your network adapter if you get frequent disconnects.
• Flush DNS: Open Command Prompt as admin and run ipconfig /flushdns.

Also, check if your antivirus or firewall is blocking League’s connection. Add exceptions for LeagueClient.exe and League of Legends.exe in your security software.

Frequently Asked Questions

Why does League of Legends crash on startup?

Startup crashes are usually caused by corrupted client cache or an outdated GPU driver. Clear the cache by deleting the Riot Games\Riot Client\Data folder (the client will recreate it), and update your GPU driver. If that fails, run the repair tool.

Can a VPN cause League to crash?

Yes. VPNs can cause packet loss or IP address conflicts, leading to disconnects or client crashes. If you use a VPN, try disabling it or switching to a server closer to your region. Riot’s anti-cheat (Vanguard) may also flag certain VPN traffic.

Why does my game crash only during ranked matches?

This is likely coincidence, but ranked games are longer and more intense, so your hardware may be under load for a longer period. Overheating or memory leaks become more apparent after 30+ minutes. Check your temps and try lowering settings.

Does reinstalling Windows fix League of Legends crashes?

It can, but it’s a last resort. A clean Windows install removes any corrupted system files or conflicting software. Before doing that, try a system restore to a point before the crashes started, or use the sfc /scannow command in Command Prompt to repair system files.

Is there a way to see why my game crashed?

Windows Event Viewer logs crash details. Press Win + X → “Event Viewer” → “Windows Logs” → “Application.” Look for errors with source “Application Error” or “.NET Runtime.” The details may mention the faulting module (e.g., nvwgf2umx.dll for NVIDIA). This can help you identify whether it’s a driver or game issue.

Why does my FPS drop right before a crash?

Sudden FPS drops often signal a GPU overheating or a memory leak. If your FPS drops to single digits before closing, check your GPU temperature and close background programs that use RAM (like Chrome). Updating drivers can also fix memory leak issues.

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