Do you know how to fix the FBNetFlt.sys blue screen error? If you encounter this BSOD error on your PC, you don’t need to worry. In this post, Partition Magic provides several effective solutions to help you get rid of this error.

Encountering the blue screen error on the computer could be frustrating, as users may be unable to boot into Windows normally when this error occurs. For different reasons, users can experience different BSOD errors, such as e1d65x64.sys BSOD error, MANUALLY INITIATED CRASH BSOD error and the one we discussed in this post.

About FBNetFlt.sys BSOD Error

FBNetFit.sys is a digitally signed driver file from Lenovo installed by the Lenovo Vantage App which can help gamers play games on their PCs quite easily and smoothly. So, the culprit of the FBNetFlt.sys BSOD error may be the problematic Lenovo application.

Different people report that they encountered the FBNetFlt.sys blue screen error on different occasions. Many people encounter the error when they are playing video games, such as Valorant, while some people encounter this error when they do some simple activities like browsing the web.

For example, here is a user report from the Reddit forum:

I encountered the Bluescreen of death due to FBNetFlt.sys failing. I've been told to get rid of the file, but not sure how and how safe it is to do. Help is much appreciated.
FBNetFlt.sys blue screen

How to fix the FBNetFlt.sys blue screen error in Windows 10/11? In the following content, I summarize some helpful methods to help you solve this error. You can try them one by one until the error gets fixed.

If you are able to access Windows, you can attempt these solutions directly. If you cannot, you will need to boot into safe mode first. Check out this post for instructions on how to boot into safe mode: How to Start Windows 10 in Safe Mode | 5 Ways.

Method 1. Update Windows to the Latest Version

The outdated Windows version may also trigger the FBNetFlt.sys blue screen error. So, you can update your Windows to fix the error. To do that, you just need to navigate to Settings > Update & Security > Windows update, and then click Check for updates.

Method 2. Remove Latest Windows Updates

If you encountered the FBNetFlt.sys blue screen error after installing the latest Windows updates, you must have installed a buggy update. In this case, you can try removing the latest Windows update to fix the error. To do that, you can use this post as a reference: How to Uninstall and Reinstall Updates on Windows 10/11 PCs?

Method 3. Run SFC and DISM Scan

If there are missing or corrupted system files on your PC, you may also encounter the FBNetFlt.sys BSOD error. In this case, you can try running SFC and DISM to fix the error. Here’s the way:

Step 1. Press the Win + S keys simultaneously to open the Search window. Type “cmd” in the search box, right-click Command Prompt under Best Match, and then select Run as administrator.

Step 2. In the elevated Command Prompt window, type “sfc /scannow” and press Enter.

Step 3. Once the process is complete, restart your PC and check if the error has been resolved. If not, proceed by initiating a DISM scan. Here are the DISM commands:

  • DISM.exe /Online /Cleanup-image /Scanhealth
  • DISM.exe /Online /Cleanup-image /Checkhealth
  • DISM.exe /Online /Cleanup-image /Restorehealth

Method 4. Reinstall Lenovo Gaming NetFilter Driver

Several users reported removing the Gaming NetFilter from their systems helped them solve this FBNetFlt.sys blue screen error successfully. You can also have a try. Here’s the way:

  1. Boot into the Safe Mode.
  2. Press the Win + X keys to open Quick Menu, and select Device Manager.
  3. Click the View tab and select Show hidden devices.
  4. Expand the System devices category, and then search for Lenovo Gaming NetFilter.
  5. Right-click it and select Uninstall device.
  6. A pop-up window should appear next.
  7. Hit Uninstall again to confirm deleting this driver.
  8. After that, restart your PC and check if the problem resolves this way.
  9. To reinstall this driver, you can visit Lenovo’s official site and download its driver.

Method 5. Uninstall Lenovo Vantage

If uninstalling and then reinstalling the gaming NetFilter doesn’t do anything, you can try removing the Lenovo Vantage from your computer to fix the error. To do so, follow these easy steps:

Step 1. Open the Quick Menu window, and then select Apps and features.

Step 2. In the pop-up window, come down to Lenovo Vantage and select it.

Step 3. Select Uninstall and then Uninstall again on the confirmation window.

Step 4. Wait for the process to complete. Once done, reboot your device normally and check if the problem resolves after uninstalling Lenovo Vantage.

Method 6. Perform System Restore

If your system does have a restore point, you can also use it to revert your PC to an earlier state when everything was running perfectly. To do so, you can refer to these posts:

Method 7. Clean Install Windows

If none of the above fixes can resolve this FBNetFlt.sys blue screen error, you are left with only one option and that is clean installing Windows 11/10. Here’s the guide:

Further Reading:

Clean install Windows is a process of installing an operating system on a PC where the hard drive is formatted and wiped completely. Also, it will ease everything on your hard drive. So, before you do this, you’d better back up your hard drive first.

To do that, you can use MiniTool ShadowMaker. It is a professional backup utility capable of backing up entire systems, hard disks, partitions, files/folders, and shared folders to a location of your choice.

MiniTool ShadowMaker TrialClick to Download100%Clean & Safe

In addition, you can also use MiniTool Partition Wizard. It provides some useful features to help you clone a hard drive, copy partitions, and migrate Windows OS to SSD/HDD. Moreover, it can change cluster size, convert MBR to GPT, rebuild MBR, format USB to FAT32, move/resize partitions, do SSD data recovery, and more.

MiniTool Partition Wizard DemoClick to Download100%Clean & Safe

use MiniTool Partition Wizard

Bottom Line

How to fix the FBNetFlt.sys blue screen error on Windows 10/11? This article provides several effective methods to help you troubleshoot this error.

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