Fbnetflt sys ошибка

Question

Issue: How to fix FBNetFlt.sys Blue Screen in Windows?

Hello, I have been encountering FBNetFlt.sys Blue Screen errors, usually whenever I’m playing the game (although it also happened when I was simply browsing the internet a few times). I am using Lenovo Legion 5P with Windows 10 Home.

Solved Answer

Blue Screen of Death^[1] crashes can be extremely frustrating, as they immediately interrupt everything being worked on at the time and force a restart of the system. FBNetFlt.sys BSOD is a system crash that users encounter at regular intervals, usually whenever they are playing video games such as Valorant, although even simple activities like browsing the web may also trigger the stop code and a forced Windows restart.

In most cases, those who face a Blue Screen crash forget soon enough about it, as it does not repeat. However, when these crashes continue, not only does it becomes using Windows frustrating, but it also means that there’s an underlying issue at play, and it needs to be addressed as soon as possible.

FBNetFlt.sys is a Lenovo-exclusive Blue Screen of Death error and is related to drivers^[2] or applications installed on these systems. The issue affects both laptops and desktops and can also occur on various Windows versions such as 10 or 11. Likewise, users can see an error code DRIVER_IRQL_NOT_LESS_OR_EQUAL when the crash happens.

One of the first things you should do to fix this problem is to make sure that all Windows updates are installed on your system and then check whether or not there are issues with system file corruption. If that proves to be unsuccessful, updating or reinstalling a related driver software may help.

If you want to skip these steps and instead fix the FBNetFlt.sys BSOD automatically, we recommend running a scan with a PC repair tool FortectMac Washing Machine X9, as it can locate corrupted system files and replace them with brand new ones, fixing blue screen crashes, registry corruption, malware^[3] damage, etc. If you want a manual solution, please check out the instructions below.

1. Install the latest Windows updates

The first thing you should do is make sure that all the latest Windows updates are installed on your system. Proceed with the following steps:

• Type Updates in Windows search and press Enter
• Here, click Check for updates
• Wait till Windows downloads and installs all the necessary files
• If optional updates are available, install them too
• Restart your system.

2. Run system checks

Corrupted system files could be causing all sorts of issues, so make sure you run an SFC and DISM scan via the elevated Command Prompt:

• Type cmd in Windows search
• Right-click on Command Prompt search result and select Run as administrator
• If the UAC window shows up, click Yes
• Next, type in the following command and press Enter:
  sfc /scannow
• Once done, run the following commands as well:
  DISM /Online /Cleanup-Image /CheckHealth
  DISM /Online /Cleanup-Image /ScanHealth
  DISM /Online /Cleanup-Image /RestoreHealth
• Restart your device.

3. Update Lenovo’s drivers

Some users claimed that the issue lies within outdated or corrupted Gaming NetFilter drivers. Note that there could be other drivers related to your GPU or Lenovo systems that need updating. The easiest way to update all drivers is by employing automatic software such as DriverFix. Alternatively, you should access the Lenovo website and download the appropriate drivers manually.

4. Uninstall Lenovo Nerve Center and/or Lenovo Vantage

Some users could fix the crashes after uninstalling Lenovo’s built-in app called Nerve Center.

• Type in Control Panel in Windows search and press Enter
• Go to Programs > Uninstall a program
• Find Lenovo Nerve Center and Lenovo Vantage
• Right-click the app and select Uninstall
• Follow on-screen instructions and restart your system.

5. Use System Restore

If your computer was working fine and just suddenly started malfunctioning, you could restore it to the previous state when it was working fine. All your personal files would remain intact during this procedure.

• Type in Create a System Restore Point in Windows search and hit Enter
• Click on System Restore
• Select Choose a different restore point (if available) and click Next
• Mark the Show more restore points checkbox
• Choose the date before you start experiencing the issue
• Click Next and reboot the system as required.

Other Blue Screen of Death crashes that occur under similar circumstances:

• Rtf64x64.sys BSOD
• Netwtw10.sys BSOD
• Mtkwl6ex.sys BSOD.

Repair your Errors automatically

ugetfix.com team is trying to do its best to help users find the best solutions for eliminating their errors. If you don’t want to struggle with manual repair techniques, please use the automatic software. All recommended products have been tested and approved by our professionals. Tools that you can use to fix your error are listed bellow:

If you are encountering an FBNetFlt.sys Blue Screen Error while booting up your device and doesn’t know what to do next, read this article till the end. In this post, we will discuss what is FBNetFlt.sys, what triggers this error code, and six working ways that might solve this problem. 

When you receive this BSOD error, it might come up with additional information – Driver_Irql_Not_Less_Or_Equal, Unexpected_Store_Exception, or some other info. Whatever the reason is in your case, have this problem resolved by applying the tweaks outlined below. 

What is FBNetFlt.sys & When does it occur?

FBNetFlt.sys is a system file of Lenovo Vantage and it helps gamers play games on their PCs quite easily and smoothly. Some important aspects of having this tool running on your PC are as follows –

• Update all game-related drivers
• Run diagnostics
• Request support from Game Building companies. 
• Warning users if they are connected to risky WiFi networks
• and many others

You must now know the importance of this tool. However, at times, it might become corrupted for no specific reason and start corrupting system files and folders. Since you are facing a blue-screen type error, you have no other choices except applying the below fixes. 

Solving a blue screen error requires booting into the Safe Mode first. This is essential because you can’t apply any fix if you can’t get past this Blue Screen. So, boot into the Safe Mode with or without networking and follow these solutions.

1] Reinstall Lenovo Gaming NetFilter Driver

Several users reported solving this FBNetFlt.sys Blue Screen Error after they have removed this Gaming NetFilter from their systems. However, if it does serve specific purposes on your PC, you may try uninstalling and then reinstalling the related drivers. Boot into the Safe Mode first and follow these steps –

• Press Win + X, and select Device Manager.
• Click the View tab and select Show hidden devices.
• Under your system drivers and tools, search for Lenovo Gaming NetFilter.
• When found, right-click on it and select “Uninstall device“.
• A pop-up window should appear next, hit Uninstall again to confirm deleting this driver.

After this driver is removed successfully from your system, restart your PC and check if the problem resolves this way. To reinstall this driver, visit Lenovo’s official site and download its driver. Double-click on the downloaded device driver to begin installing Lenovo Gaming NetFilter Driver. 

2] Uninstall Lenovo Vantage

If uninstalling and then reinstalling the gaming NetFilter doesn’t do anything, you must remove this software from your computer. To do so, follow these easy steps – 

• Press Win + X, and select Installed apps. If you are on earlier versions of Windows, select Apps & Features instead of Installed apps.
• On the upcoming window, come down to Lenovo Vantage and click the three dots available on its right end.
• From the pop-up window, select Uninstall and then Uninstall again on the confirmation window.
• Wait for the system to remove this application from your computer permanently. 

Reboot your device normally and check if the problem resolves after uninstalling Lenovo Vantage. 

3] Run SFC/DISM Scans

For Windows PC to run smoothly, all system files and folders must remain healthy and error-free. At any time, when the system files went missing or have been corrupted due to some malware, your device might get into a blue-screen type error. 

To address file corruption on Windows 11/10, you may use System File Checker. Here’s how to utilize the SFC scan on your computer –

• Press Win + R to launch the Run dialog.
• Type “CMD” and press Ctrl + Shift + Enter keys altogether.
• Command Prompt will start next having administrative privileges. 
• On the elevated console, type the following, and press Enter –

sfc /scannow

• Wait for this command to run successfully and see what CMD says in the end. 

Just like SFC, DISM is an in-built tool on Windows 11/10 that can find and solve any corruption inside the System Image. To initiate running the DISM command on Windows PC, do the following – 

• Press Win + X and select Windows Terminal (Admin).
• The terminal will default land into Windows PowerShell.
• Type the following on it and press Enter – 

DISM /Online /Cleanup-Image /RestoreHealth

• This tool will also take 10-15 minutes to automatically find and resolve any corruption within your System Image. 

By the end, your device must be working fine. If not, follow the next set of solutions outlined below. 

4] Remove Latest Windows Updates

Microsoft releases new updates 1-2 times a month. Out of these, there is one security update while others are simply non-security, out-of-band, or other updates. These updates are optional in nature and one doesn’t require installing them unless the update is of any use to a particular user. 

In case you have installed such an update and this FBNetFlt.sys Blue Screen Error starts occurring afterward, you must have installed a buggy update. Get rid of this faulty update and your device will start running normally. Here’s how to perform this task on Windows 10. Windows 11 users may follow these steps instead – 

• Launch Settings (Win + I), and navigate to the below path –

Windows Update > Update history

• Scroll down to Related settings and click on Uninstall updates.

• At the top, you will see all updates that were installed on your system recently.

• Click the Uninstall button available on an update’s right end. 
• A confirmation window will pop up next, hit Uninstall again.

The system will immediately start removing the selected update from your device. Wait for this to complete and as soon as this is over, restart your PC. 

5] Use System Restore Point

If your system does have a restore point, use it and revert back your PC to an earlier state when everything was running perfectly. To do so, follow these easy steps –

• Right-click on the Windows icon and select Run.
• Type “rstrui” on it and hit OK.
• When the System Restore window launches, click Next.
• Select the recent restore point and hit Scan for affected programs.
• Only when this check reports “None detected“, proceed with the restoration of your PC. 
• Click Next and then Finish.

Your PC will restart and start reverting back to the chosen state. 

6] Clean Install Windows

I hope the FBNetFlt.sys Blue Screen error resolves by now. In case none of the above fixes resolve this BSOD error, you are left with only one option and that is clean installing windows 11/10. 

• Clean Install Windows 10
• Clean Install Windows 11

Do you come across What failed: FBNetFlt.sys on a blue screen of your system? This error mostly appears accompanied by Driver_Irql_Not_Less_Or_Equal, Unexpected_Store_Exception, and some other bug check codes. FBNetFlt.sys BSOD is the result of system crash that occurs due to a Lenovo application.

This Blue screen of death is generated because of Lenovo Vantage Service which works to improve performance, update drivers, run diagnostics, request support, warn about risky WiFi networks, and a lot more on Lenovo computers. But several times, FBNetFlt.sys driver file which is an integral part of this app behaves incorrectly as well as causes this Blue screen error. Outdated and buggy driver might also be a factor in this case. Let’s see the ways to resolve this problem.

Here is how to fix FBNetFlt.sys Blue Screen Error BSOD in Windows 11, 10 –

Way-1: Remove Lenovo Vantage

As mentioned, this issue occurs only on Lenovo PCs most of all due to Lenovo Vantage app. Therefore, in order to solve this, you will need to remove this using the below steps –

a] Through Control panel

1. Press Winkey+R.
2. Type appwiz.cpl.
3. Hit – Enter.
4. On the Programs and Features window, find Lenovo Vantage Service.
5. Click on – Uninstall.

1. Select Yes on the pop-up asking, “Are you sure you want to completely remove Lenovo Vantage Service and all its components?”.
2. Follow the instructions on the screen.

b] Using the Settings app

1. Right-click on Start.
2. Select – Settings.
3. On the app, click on Apps.
4. Go to the right pane and locate Lenovo Vantage service in the list.
5. Click on 3-dots menu > Uninstall. (In case of Windows 10, directly click on ‘Uninstall’)
6. If any verification prompt appears select Yes.
7. Follow the instructions if shown.

Way-2: Uninstall and Reinstall the driver

Instead of completely removing the app, sometimes uninstalling its driver and then installing again fix this BSOD. Lenovo Vantage service comes with FBNetFlt.sys driver file which can be reinstalled easily from Device Manager. All you need is to follow the steps –

1. Press Windows + X.
2. Select – Device Manager.
3. Once the Windows tool loads, click on View.
4. Select – Show hidden devices.
5. Find Lenovo Gaming NetFilter Device.
6. Right-click on it and select – ‘Uninstall device’.
7. From the pop-up, click on Uninstall.
8. Restart the computer and see if the issue is solved.
9. If not then go to the manufacturer’s website and download the most recent version of the app.
10. Run the setup and install by following the guidelines.

Way-3: Run System File Checker

System file corruption is a fairly strong reason for the FBNetFlt.sys Blue Screen Error. This starts after the driver is involved in conflict. But there is a System File Checker aka SFC /Scannow command line tool to remediate the issue.

1. Press – Winkey.
2. Type – cmd.
3. Select – Run as administrator.
4. Click on Yes from the User account control.
5. Now type SFC /Scannow.

1. Hit the Enter key to start scanning and repairing.
2. Once it reaches 100%, restart the PC and check for the error.

Way-4: Remove Windows update

Oftentimes this Blue screen error may appear when a Windows update contains bug interfering with the working of FBNetFlt.sys driver. If the bugcheck triggers just after installing an update you should understand that bug is the real culprit. Removal of the update can work as a solution in this case so move forward with the method –

1. Click on Search.
2. Type updates.
3. Press Enter and allow the Settings app to load.
4. Go to the right pane and click on Update history (If you are on Windows 10 click on ‘View update history’).
5. Click on Uninstall updates.
6. Search the patch it should be in the form of KB………
7. Select and update and click on Uninstall.

1. Click Yes if prompted.

Way-5: Clean Install the Windows

Until now the BSOD FBNetFlt.sys is not fixed means there is no option other than Clean install. This is an installation method performed through ISO file but guarantees that you will no longer face the Blue screen further. However, experts can handle the process better but if you are a techie guy you can also manage to perform the clean install using the below instructions –

1. Launch the browser and type Windows 10 download.
2. From the result, click on Microsoft’s official website (generally shown on the top).
3. Scroll down to the “Create Windows 10 installation media” section.
4. Click on – Download tool now.
5. Double-click on the setup file.
6. On the Licence term window, select – Accept.
7. Now, check the option – Create installation media (USB flash drive, DVD, or ISO file) for another PC.
8. Click – Next.
9. Check – Use the recommended options for this PC.
10. Click on ‘Next’.
11. Insert a USB Flash Drive into the Computer.
12. Select the radio button for – USB flash drive.
13. Click o Next and allow the ISO file to create.
14. Now shut down the system and power it on.
15. Press Esc or Del or another function key to interrupt the boot sequence.
16. On Boot device options screen, select the USB flash drive you have inserted.
17. Follow the guide on the setup and complete the installation.

Methods:
Way-1: Remove Lenovo Vantage
Way-2: Uninstall and Reinstall the driver
Way-3: Run System File Checker
Way-4: Remove Windows update
Way-5: Clean Install Windows

That’s all!!

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