How To Fix Error Code 0x6d9 In Windows will be described in this article. The internet’s importance to our lives cannot be emphasized. We are shielded from the dangers of the internet by antivirus software. It ensures that there are no unwelcome risks involved in our online activity. But what happens if you receive Windows Firewall error 0x6d9, as many people do?

How To Fix Error Code 0x6d9 In Windows

In this article, you can know about How To Fix Error Code 0x6d9 here are the details below;

Windows Firewall Error Code 0X6d9 Causes

This problem has been reported by a number of Windows users, some of whom are listed below.

  1. After installing extra security software, consumers got an error message.

2-The Windows Firewall returns the error code 0x6d9 in cases where it crashes with no discernible reason.

  1. A lot of people who were using Windows Defender had trouble logging on to the internet.

Here are some different fixes for the problem, regardless of whether you’re using Windows 10 or Windows 11.

Error Code 0x6d9 in windows 11/10? How to Fix

Restart Windows Security

Occasionally, a fast restart will resolve the problem. Therefore, restart the Windows Security service before continuing. The necessary actions are shown below.

  1. Use the search bar to look for Windows Security.
  2. Select “Open.”
  3. In the Virus & Threat Protection section, click the Restart now option.

Click the Restart now button on the Virus & threat protection section

Reset settings for Windows Firewall

For many people, resetting Windows Firewall has proven to be an effective solution. For this, we have also indicated the Command Prompt instructions.

  1. In the Windows tracking box, type cmd, then select Run as administrator on the right.

2-Type the following commands, separating them with Enter, when the Command Prompt window opens.

netsh reset advfirewall

net launch mpsdrv

net launch mpssvc

bfe net start

dll for regsvr32 firewallapi

Perform System Restore

Perform System Restore

Start by completely uninstalling the security program. That refers to completely deleting the program without leaving any trace. After doing those, it might be required to perform a System Restore. Your computer can be reset to a state in which everything was working as it should. You can’t perform a System Restore until you’ve created a restore point. The usage of System Restore in Windows 10/11 is described in this article. Also check DVD Burning Software

Scan system Files

The cause of Windows Firewall error 0x6d9 system could be corrupt Windows Firewall system files. To scan and restore corrupt System Files, use the Command Prompt.

  1. In the Windows tracking box, type cmd, then select Run as administrator on the right.

2 – When the Command Prompt window extends, type sfc /scannow and press Enter.

scannow and hit Enter when the Command Prompt window appears

When the scan is finished, see if you can resolve the problem.

Check Required Services

The Windows Firewall error number 0x6d9 may appear if services linked to the firewall are not functioning properly. The steps to fix this problem are listed below.

1 – Press Windows + R to launch the Run command.

2 – In the dialog box, type services.msc and press Enter.

3-Scroll down and double-click Windows Defender Firewall when the “Services” box appears.

4- Select the Automatic starting option.

Pick Automatic as the startup type

Check the Network Store Interface Service (BFE) and Base Filtering Engine as well.

Close Conflicting Program

Run time errors like the one in question occasionally happen, for example, when you’ve installed a program that is interfering with your PC’s functionality. Uninstalling the software is the best thing to do. Prior to doing so, you can try starting Windows in Safe Mode with a limited selection of drivers and files, and then verify if the Windows Security service can be properly launched. If so, this indicates that the problem may be with a recently installed program. Returning to ordinary mode will allow you to either uninstall or exit the software. The instructions to “End Task” any background programs are listed below. Also check Bluetooth Software

  1. Press Ctrl + Shift + Esc to open the Task Manager.

2- Select the software that is causing problems.

  1. Choose the Final Task.

Select the End Task


We hope that the error number 0x6d9 is no longer visible to you and that your Windows Firewall is functioning normally at this time. In the comments section below, please let us know which of the ideas worked for you.