How to Fix PVP Net Patcher Kernel Stopped Working Error on Windows 11

If you are experiencing the “PVP Net Patcher Kernel Stopped Working” error on Windows 11, you are not alone. This issue commonly occurs when trying to launch the League of Legends game launcher. It can be frustrating as it prevents the game from updating or starting properly.

Fortunately, there are several straightforward steps you can take to fix this problem. Most solutions involve adjusting settings or files related to the game’s patcher system.

This guide will walk you through simple to more advanced fixes to help you get back into the game quickly and safely.

Follow each step carefully to avoid causing further issues with your game installation.

Quick Note

Before diving into the fixes, make sure of the following:

You have a stable internet connection since the patcher needs to download files.
Your Windows 11 is updated to the latest version to avoid compatibility issues.
You have administrator rights on your PC, as some fixes require elevated permissions.
Your antivirus or firewall isn’t blocking the game or patcher files.

Step 1: Run the Game and Patcher as Administrator

Running the game and its patcher with administrator privileges can solve many permission-related problems.

Right-click on the League of Legends shortcut or executable file.
Select Properties from the context menu.
Go to the Compatibility tab.
Check the box that says Run this program as an administrator.
Click Apply and then OK.
Try launching the game again.

This step ensures the patcher has the necessary permissions to modify files and update the game.

Step 2: Close Conflicting Programs

Some background applications may interfere with the patcher.

Press Ctrl + Shift + Esc to open Task Manager.
Look for programs like VPNs, overlays (Discord, GeForce Experience), or third-party antivirus software.
Select each suspicious program and click End Task.
Once closed, try running the patcher again.

Conflicts often happen because these programs lock files or block network connections.

Step 3: Delete the Patcher Kernel File

Sometimes, the patcher kernel file itself may become corrupted. Replacing it can fix the problem.

Navigate to the League of Legends installation folder. By default, this is usually C:Riot GamesLeague of Legends.
Find the file named PatcherKernel.exe inside the RADSprojectslol_air_clientreleases folder. The exact path can vary, so look inside the game’s folders.
Delete the PatcherKernel.exe file.
Restart the League of Legends launcher. It will automatically download a fresh copy of the patcher kernel.

Deleting this file forces the launcher to replace the damaged kernel, which often resolves the crash.

Step 4: Repair the Game Using the League Client

The League of Legends client includes a built-in repair tool that can fix corrupted files.

Open the League of Legends launcher.
Click the gear icon (Settings) in the upper right corner.
Select Initiate Full Repair or Repair.
Wait for the process to complete. This may take some time depending on your system.
Once done, try launching the game again.

This tool scans for missing or damaged files and fixes them, which can solve kernel-related errors.

Step 5: Disable Antivirus or Add Exceptions

Sometimes, antivirus software may mistakenly block the patcher kernel.

Temporarily disable your antivirus and firewall.
Try launching the patcher again.
If the error goes away, add the League of Legends folder to your antivirus exceptions or whitelist.
Re-enable your antivirus after adding the exceptions.

Adding exceptions prevents your security software from interfering with the game’s files.

Step 6: Update or Reinstall Visual C++ Redistributables

The patcher relies on certain Microsoft Visual C++ components to run correctly.

Go to the official Microsoft website.
Download the latest versions of the Visual C++ Redistributable for Visual Studio 2015, 2017, and 2019 (both x86 and x64).
Install or repair these packages.
Restart your computer and try launching the game again.

Missing or outdated redistributables can cause the patcher kernel to crash unexpectedly.

Step 7: Reinstall League of Legends

If none of the above methods work, a clean reinstall can fix deep issues.

Open Settings on Windows 11.
Go to Apps > Installed apps.
Find League of Legends and click Uninstall.
After uninstalling, delete any leftover files in the installation folder.
Download the latest installer from the official Riot Games website.
Install the game again and check if the error persists.

A fresh install removes corrupted files and resets the game to default settings.

Frequently Asked Questions (FAQs)

Why does the PVP Net Patcher Kernel stop working?

This error usually happens because of corrupted patcher files, permission issues, or conflicts with other software blocking the patcher’s operation.

Can I play the game without fixing this error?

No, the patcher is required to update and launch League of Legends properly. Fixing this error is necessary to play.

Is this error specific to Windows 11?

While it can happen on any Windows version, some users report it more frequently on Windows 11 due to new security and compatibility features.

Will disabling antivirus permanently fix the issue?

Disabling antivirus temporarily can help identify the cause, but adding exceptions is recommended for a permanent fix.

Is it safe to delete the PatcherKernel.exe file?

Yes, it is safe because the launcher will download a fresh copy automatically. This often fixes corrupted kernel problems.

When Nothing Works

If you have tried all the above steps and still face the “PVP Net Patcher Kernel Stopped Working” error, consider the following options:

Visit the official Riot Games Support page for detailed troubleshooting guides.
Submit a support ticket to Riot Games describing your problem.
Check community forums like Reddit or the Riot Games Boards for similar issues and solutions.
Make sure your Windows 11 installation is fully updated and free of system errors.

Conclusion

The “PVP Net Patcher Kernel Stopped Working” error on Windows 11 can be frustrating, but it is usually fixable with simple steps. Starting by running the game as an administrator and closing conflicting programs often solves the issue quickly.

If those basic fixes don’t work, repairing the game files, adjusting antivirus settings, and reinstalling necessary system components are effective next steps. Finally, a clean reinstall of League of Legends can solve more stubborn problems.

Taking a methodical approach from simple to advanced troubleshooting will help you resolve this error safely and get back to gaming without unnecessary delays.