Table of contents
- What is Error 0x6d9 in Windows?
- Method 1: Conducting a System Restore on your Computer
- Method 2: Reviewing the Status of the Following Windows Services
- Method 3: Resetting the Windows Firewall
- Method 4: Resetting the Permissions for Microsoft Protection
Access to the Internet has become an integral part of our daily lives. Moreover, we want our online activities to remain secure and safe from viruses and malware. This is why it is advisable for PC users to install reliable software like Auslogics Anti-Malware, which can provide us with the protection we need.
However, there are times when Windows users experience errors while installing security software. One example is the error 0x6d9—an issue that may hinder you from accessing the Internet.
What is Error 0x6d9 in Windows?
Users who had encountered the 6d9 error reported that their Windows Firewall was involuntarily turned off while they were installing their security software. They also complain of having no access to the Internet. If you experience the same problem, your operating system would most likely give an APIPA IP address. You will see an error message like the one below:
“There was an error opening the Windows Firewall with Advanced Security snap-in, The Windows Firewall with Advanced Security snap-in failed to load, Restart the Windows Firewall service on the computer that you are managing, Error 0x6D9.”
Do not panic if you see this message. In this article, we will teach you how to resolve 0x6d9 Windows Firewall error. In no time will you be able to access the Internet and enjoy all the features of your security software.
Of course, the first solution to fixing this problem is uninstalling your anti-malware/anti-virus software. On the other hand, there are cases where doing this step does not completely resolve the error. So, you might have to resort to the other options listed below.
Method 1: Conducting a System Restore on your Computer
After uninstalling your security software, you can perform a system restore. This will allow you to go back to the system settings before the error occurred. Follow the steps below:
- Click the Search icon.
- Type
System Restore. - In the System Restore section, click the System Restore button.
- Click Apply and then click OK.
After following the steps above, check if the issue has been resolved.
Method 2: Reviewing the Status of the Following Windows Services
If you notice that the system restore did not thoroughly fix the error 0x6d9, the next resolution would be to check the following Windows services:
- Windows Firewall
- Base Filtering Engine (BFE)
- Windows Firewall Authorization Driver (MPSDRV)
To check them, follow the instructions below:
- Press the
Windows Key +R. This should open the Run dialog box. - Type in
services.mscand clickEnter. - Once the Services Manager window is up, look for the aforementioned services and check if they are set to “Started”.
Fix this issue quickly
You can try using a safe and totally free tool developed by the Auslogics team of experts.
A few simple steps to troubleshoot the issue:
Download the tiny Auslogics TroubleShooter tool.
Run the application (no installation is needed).
The app will check for the issue mentioned in the article. When the scan is done, check that this is the issue you were looking to solve and click ‘Apply now’ to apply the recommended fix.
You can use the app to troubleshoot other malfunctions for free by simply typing in a brief description of the issue your PC is experiencing. Or you can scan your PC for performance issues using the My Scanner tab.
Method 3: Resetting the Windows Firewall
Most of the time, users who researched how to resolve 0x6d9 Windows Firewall error followed this method and were able to fix the problem. You can reset the Windows Firewall via the Control Panel or by using an elevated Command Prompt. Doing so will allow you start the services and re-register the firewall DLL file. Here are the steps:
- Press the
Windows Key +Rto open the Run dialog box. - Type in
cmdand hitEnterto open Command Prompt. - Once the Command Prompt is up, execute the commands below, one by one:
netsh advfirewall reset
net start mpsdrv
net start mpssvc
net start bfe
regsvr32 firewallapi.dll
Check if this method resolved the issue. If not, try the next fix.
Method 4: Resetting the Permissions for Microsoft Protection
In this method, you will deal with Windows Registry, which is a sensitive database. If you incorrectly modify it, registry files may be damaged, causing bigger problems to your computer. So, before you follow the steps below, make sure you back up the registry first.
Note the following keys and permissions:
Keys: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\SharedAccess\Epoch
Permission needed: Query Value; Set Value
Keys: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\SharedAccess\Defaults\FirewallPolicy
Permission needed: Full Control; Read
Keys: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy
Permission needed: Full Control; Read
Follow these steps:
- Press the
Windows Key +Rto open the Run dialog box. - Type in
regeditand pressEnter. - Navigate to the aforementioned registry keys and look for “Enter the object names to select field”.
- In the column, type
NT SERVICE\mpssvc. Click Check Name and then press OK. - Add the permissions to their corresponding keys.
As we’ve warned you, updating and cleaning the registry files can be complicated. Thankfully, you can use a one-click solution like Auslogics Registry Cleaner to fix this issue. With this tool, you can conveniently repair damaged and corrupted registry files.
Have you experienced the same issue on your Windows Firewall?
Let us know how you fixed it in the comments below!
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- How to Fix the 0x6d9 Error in Windows Defender Firewall
By Daisy | Follow |
Last Updated
Nowadays, the Internet has become an important part of your lives. And you use Windows Defender Firewall to keep your online activities safe, but sometimes the 0x6d9 error occurs. Click this post from MiniTool to get solutions to fix the 0x6d9 error.
Reasons for the 0x6d9 Error in Windows Defender Firewall
If the Windows Firewall service is not running or if any of the services that Windows Firewall required are not running (that is, BFE), this error message will appear. Here are 3 main reasons for the Windows Defender Firewall error Code 0x6d9.
1. Windows Firewall Configuration
Sometimes, the issue appears because of the configuration of the Windows Defender Firewall. You have to reset the configuration to fix the error.
2. Windows Firewall and Dependent Services Not Running
Windows Firewall needs to run some services to work properly. The Firewall will not work once the services are not running.
3. Malware on the System
Some malware on your system can cause this error. You can only run scans to remove the malware.
Solutions to Fix the 0x6d9 Error
Solution 1: Perform a System Restore
First, you can try performing a System Restore. A System Restore will restore your operating system to a point in the past that can help you fix many issues.
Solution 2: Check the Required Services
Here are the solutions to the 0x6d9 error. Just now, I mentioned one of the reasons for the error is the Windows services not running. So you need to check whether these services are running or not. Here are the steps:
Step 1: Open the Run dialog box by pressing the Windows + R keys at the same time.
Step 2: Type services.msc and press Enter to open the Services window.
Step 3: Then you need to search for Windows Defender Firewall and Base Filtering Engine one by one to check whether these services are running or not.
Additionally, you need to set their Startup type to Automatic. Please double-click the service to open the Properties window and choose Automatic that is in front of Startup type. Then you can see if the issue persists.
Tip: If the service is running, you need to stop it first, and then change the Startup type as Automatically directly.
Solution 3: Reset Windows Firewall
If the issue still exists, the Windows Firewall configuration is causing the problem. Then you need to reset Windows Firewall. Here are the steps:
Step 1: Open the Start Menu, type cmd and search for it. Then select Run as an Administrator.
Step 2: Then, you need to type the following commands one by one:
netsh advfirewall reset
net start mpsdrv
net start mpssvc
net start bfe
regsvr32 firewallapi.dll
Solution 4: Reset the Permissions for Microsoft Protection
Then, you can try this solution – reset the permission for Microsoft protection. But if you modify it incorrectly, the registry file may be corrupted, which will cause a bigger problem for your computer. Therefore, be sure to back up the registry before performing the following steps, read this post – How to Back up Individual Registry Keys Windows 10?
Here are the steps to fix the 0x6d9 error in Windows Defender Firewall:
Step 1: Press the Windows +R keys to open the Run dialog box. Then type regedit and press Enter.
Step 2: Navigate to the following registry keys one by one.
1. HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\SharedAccess\Epoch
2. HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\SharedAccess\Defaults\FirewallPolicy
3. HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy
Step 3: Right-click (Default), choose Modify and input the value data: NT SERVICE \ mpssvc. And you should input the value data to the above registry keys.
Step 4: At last, restart your computer.
Final Words
When you see this error message, do not panic. You can try the solutions one by one that I mentioned in this post. I hope your computer can keep secure and safe, meanwhile, I hope these solutions can help you fix the 0x6d9 error in Windows Defender Firewall.
About The Author
Position: Columnist
Having been an editor at MiniTool since graduating college as an English major, Daisy specializes in writing about data backups, disk cloning, and file syncing as well as general computer knowledge and issues. In her free time, Daisy enjoys running and going with friends to the amusement park.
При попытке включить ранее выключенный Брандмауэр Windows можно наткнуться на ошибку «0X6D9». Данный код появляться на компьютерах под управлением Windows 7, но не исключено и его проявление на других версиях ОС Windows.
Как правило, эта ошибка возникает по причине неработающей службы Брандмауэра Windows либо отключенных служб, важных для правильной работы Брандмауэра. Порой не исключена и причина в виде вредоносного ПО или даже вирусов.
Избавляемся от ошибки «0x6d9»
Метод №1 Запуск средства устранения неполадок
Самое первое решение при появлении этой ошибки — средство устранения неполадок с Брандмауэром Windows. Это средство специально создано силами Майкрософт для автоматического поиска проблем в системе пользователя, связанных с работой Брандмауэра Windows, и их исправления. Вам достаточно загрузить его на свой компьютер и запустить. Попробуйте проследовать этим шагам:
- перейдите по этой ссылке и загрузите файл «WindowsFirewall.diagcab»;
- запустите загруженный файл и перейдите в «Дополнительно»;
- поставьте галочку возле пункта «Автоматически применять исправления»;
- нажмите на кнопку «Далее» и следуйте инструкциям на экране;
- после работы средства перезагрузите компьютер.
Войдя в систему, попытайтесь снова запустить Брандмауэр Windows и посмотрите, исчезла ли ошибка «0x6d9».
Метод №2 Проверка необходимых служб
Вам обязательно нужно убедиться, что службы, необходимые для правильной работы Брандмауэра, активны в вашей системе. Чтобы выполнить проверку, следуйте этим шагам:
- нажмите комбинацию Windows+R;
- пропишите в пустую строчку «services.msc» и нажмите Enter;
- найдите в списке службу под названием «Брандмауэр Windows» и дважды кликните на нее;
- убедитесь, что в графе «Тип запуска» выставлено значение «Автоматически», если нет — выставьте и примените изменения;
- найдите службу «Служба базовой фильтрации» и повторите действия, указанные выше;
- сохраните изменения и закройте все окна.
Если указанные службы были деактивированы, то после их активации ошибка «0x6d9» больше не должна вас беспокоить.
Метод №3 Сброс Брандмауэра Windows
Можно также попробовать выполнить сброс Брандмауэра Windows. Это поможет в случае того, если с его настройками что-то не так. Делается сброс очень просто при помощи нескольких команд:
- нажмите Windows+R на клавиатуре;
- пропишите значение «cmd» и нажмите комбинацию Ctrl+Shift+Enter;
- выполните следующие команды:
- netsh advfirewall reset;
- net start mpsdrv;
- net start mpssvc;
- net start bfe;
- regsvr32 firewallapi.dll;
- закройте Командную строку, когда закончите вводить все команды;
- перезагрузите компьютер.
Запускаем Брандмауэр Windows и смотрим, исчезла ли ошибка «0x6d9».
Метод №4 Сканирование и восстановление системных файлов
В некоторых случаях подобные ошибки возникают по причине поврежденных системных файлов. Системная утилита SFC может провести сканирование всех системных файлов и попытаться восстановить найденные повреждения. SFC запускается в работу следующим образом:
- нажмите Windows+R;
- пропишите «cmd» и нажмите Ctrl+Shift+Enter;
- копируйте команду «sfc /scannow» и нажмите Enter;
- дождитесь окончания работы утилиты и закройте Командную строку;
- перезагрузите свой ПК.
Снова пытаемся запустить Брандмауэр Windows и смотрим, исчезла ли ошибка «0x6d9».
Accessing the internet has become a mandatory task in our daily lives. The Windows Firewall was introduced to control the incoming and outgoing requests of your computer system. The firewall receives its share of updates and Microsoft tends to improve drastically with every major update. Some of us like to keep the Windows Defender Firewall off as it can sometimes block certain requests that prevent us from doing what we aimed to. Sometimes, if you try to turn the Windows Defender Firewall back on, you will be given the error code 0x6d9 with a message stating ‘There was an error opening the Windows Firewall with Advanced Security snap-in’.
This error message often pops up if the Windows Firewall service is not running or if any of the services required for Windows Firewall are not running i.e BFE. Besides, it can be due to a few other reasons that we will discuss below. So let us get into it.
What causes the Windows Defender Firewall Error Code 0x6d9?
The error message suggests that the issue is due to the required services not running. However, that is not it. It can be, overall, due to the following reasons —
- Windows Firewall and Dependent Services not Running: This cause is quite obvious as it is mentioned in the error message itself. Windows Firewall requires a few services to be running to operate properly. If they are not running, the Firewall will not work.
- Windows Firewall Configuration: Sometimes, the issue can be due to the configuration of Windows Defender Firewall. In such a case, you will have to reset them.
- Malware on the System: In some scenarios, the issue can also be due to some malware on your system. To resolve the issue, you will have to run scans to remove the malware.
Now that you know of the causes of the issue, let us get into the solutions that you can implement to get the issue resolved. Please try to implement all of the solutions as some of the mentioned solutions might not work in your case.
Solution 1: Run the Windows Defender Troubleshooter
The first thing you need to do when you face this error is to run the Windows Defender troubleshooter. The troubleshooter will scan for any issues with the Firewall and try to resolve them. Here’s how to do it:
- First, grab the Windows Defender Firewall troubleshooter from here.
- Once it has finished downloading, run the downloaded file.
Windows Firewall Troubleshooter - Go through the prompts and let it finish.
- See if it resolves the issue.
Solution 2: Check the Required Services
Another reason that the Windows Defender Firewall might not be starting is that the services required to initiate the Firewall are not running. The primary service is Windows Firewall service along with a few dependent services that are also needed to be running. You will have to check whether these services are running or not. Here’s how to do it:
- Press Windows Key + R to open up the Run dialog box.
- Type in services.msc and hit Enter.
- This will open up the Services window.
- Now, search for Windows Defender Firewall and Base Filtering Engine one by one and make sure that they are running.
Windows Firewall Service Running - Also, make sure that their Startup type is set to Automatic. To do this, double-click on the service to open up the Properties window. There, in front of Startup type, choose Automatic.
- If the service is running, you will have to stop it to make this change.
- Once done, see if the issue persists.
Solution 3: Reset Windows Firewall
If the issue is still there even after checking the Windows Firewall services, this can mean that the configuration of the Firewall is causing the problem. In such a case, you will have to reset Windows Firewall. Here’s how to do it:
- Open up the Start Menu, type cmd, right-click on the first result and select Run as an Administrator.
- After, type in the following commands one by one:
-
netsh advfirewall reset net start mpsdrv net start mpssvc net start bfe regsvr32 firewallapi.dll
Resetting Windows Firewall - Once done, close the cmd window and see if the issue has been solved.
Solution 4: Perform a System Scan
In case the Windows Defender Firewall still does not start up, there might be chances of malware on your system that might be causing the issue. You can deal with this by downloading this safety scanner provided by Microsoft to scan your system. Just download it and then run it. It will scan your system for any malware and remove it if found.
In case you are using a 32-bit Windows, you will have to download the utility from here.
Solution 5: Perform a System Restore
Finally, if your issue has not been resolved after trying all the given solutions, then, you will have to perform a System Restore. A System Restore will restore your operating system to a point in the past. This can help solve many issues.
Please refer to this article on our site for a detailed guide on System Restore. If you are using Windows 8 or 7, go ahead to this article instead.
Kevin Arrows
Kevin Arrows is a highly experienced and knowledgeable technology specialist with over a decade of industry experience. He holds a Microsoft Certified Technology Specialist (MCTS) certification and has a deep passion for staying up-to-date on the latest tech developments. Kevin has written extensively on a wide range of tech-related topics, showcasing his expertise and knowledge in areas such as software development, cybersecurity, and cloud computing. His contributions to the tech field have been widely recognized and respected by his peers, and he is highly regarded for his ability to explain complex technical concepts in a clear and concise manner.
Here are the Best Methods to Fix Error Code 0x6D9 on Windows 10, 8, and 7 which may have Caused due to Firewall or Security Issue
Microsoft created a huge list of error codes, and Windows error code 0x6D9 is one of them. Microsoft added an advanced firewall for the Windows OS, which prevents the programs, services, and background running apps to conduct tasks beyond permission.
We have to give the firewall a slack because it saved lots of intermediate users to prevent the machine from giving additional access to programs and services. No one should make light of a non-functioning firewall in a Windows machine, and that’s what error Code 0x6D9 is trying to inform the users.
What Causes Windows Error 0x6D9?
Every Windows error code suggests the users about the non-functioning services. We want to make it clear that Microsoft did not create dedicated error codes for every specific problem. The 0x6D9 code may seem like one error code, but it could have been triggered by multiple problems in the software.
- Your machine might have infected with PC threats like malware, spyware, virus, etc.
Avast:
Malwarebytes:
Windows Firewall:
Windows Security:
As you can see above, none of the security solutions are working including security programs from third-party vendors.
- The system files have corrupted due to heavy usage, and it is a common problem in older software.
- Windows Firewall and related services are not working or not opening at all.
In our case, it was the malware or some form of advanced threat that is preventing the Windows Firewall & other security programs to run. Allow us to show you how you can solve it error code 0x6D9, so you can save time and focus on what’s important.
Here are the Best Methods to Fix Error Code 0x6D9 on Windows 1o, 8 and 7
Fresh Windows Installation
We know that you are looking for a software-based solution but we have tried every single method to solve it. We have installed fresh Windows OS in the machine, and that’s the best way to get rid of the 0x6D9 error.
Don’t be afraid to do this on your own or seek assistance from a nearby computer service store.
- USB drive that has 16GB capacity.
- Active internet connection to download & make the Windows 10 installer.
- Find the boot menu key of your motherboard to choose the USB drive or DVD drive.
For example, Google “MSI motherboard boot menu key” and it is F11 in our case.
Always keep in mind that you should not download or create a bootable Windows USB drive or DVD from the infected computer. The malware will prevent the Windows Media Creation Tool, and this has happened to us, so you have to do this from another machine.
Download Windows 10
Scan System Files
Scanning the system files is the quickest way to identify the culprit and move on to the important solutions.
Step 1: Press Windows Key + S and then open “CMD” as administrator.
Step 2: Type “sfc/scannow” and then press enter.
Step 3: You can monitor the progress as it starts from 0% to 100%.
The scanning process takes less than ten minutes on SSD and fifteen minutes on slower HDD.
Do not close the window or force shut down the machine because this action won’t harm the software.
Step 4: The system file scanner finished the process in ten minutes, and there were no problems with the software.
If the result is “Windows Resource Protection did not find any integrity violations”, then the software does not have corrupted files.
If the result is “Windows Resource Protection found corrupt files but was unable to fix some of them”, then you should consider installing fresh Windows OS.
Restart Windows Security
The error code 0x6D9 is a sign that Windows Firewall & Defender is not working on the machine. You will have the option to restart the service immediately, and you can solve the problem instantly.
Step 1: Press Windows Key + S button together.
Step 2: Search “Windows Security” and click to open it.
Step 3: Click on “Restart now” to continue.
Step 4: The computer will restart, or the service will restart, and then Windows Security will work normally.
However, the “Restart Now” option didn’t work in our case, and we were greeted with an “Unexpected error. Sorry, we ran into a problem. Please try again” message. If you have encountered the same error message then you should consider installing fresh Windows OS.
Perform System Restore
Your PC can go back to an earlier state, and Microsoft introduced System Restore to make it possible. You can use the System Restore feature to restore the machine to an earlier state, which will remove programs, files, and other data. We will show you how you can check out the infected programs, services, and files in the machine.
Step 1: Press Windows Key + S and search for “Create a restore point” and then open it.
Step 2: The window will show up on the screen, and then click on “Configure” to continue.
Step 3: Click on “Scan for affected programs” to check out the affected programs.
Step 4: Wait for a couple of seconds and then find out what will be affected in the PC after the restoration.
Close the window and then click on “Next” to continue.
Step 5: Click on “Finish” to start the procedure.
Windows will restart the PC, and it will take less than ten minutes to finish the process.
Step 6: System Restore is failed in our case.
Unfortunately, Windows System Restore did not work in our case and when it doesn’t work then you should consider the first solution mentioned above.
Bottom Line
We have suggested a few solutions but if you want to solve Windows error code 0x6D9 then installing fresh software is the only option. We don’t know what is plaguing the Windows machine, so it is recommended to install a new copy of the software. Let us know which solution helped in fixing error code 0x6D9 in the comment section below.
If you’ve any thoughts on How to Fix Windows Error Code 0x6D9?, then feel free to drop in below comment box. Also, please subscribe to our DigitBin YouTube channel for videos tutorials. Cheers!