How to Fix the 0x6d9 Error in Windows Defender Firewall

Here are 3 main reasons for the Windows Defender Firewall error Code 0x6d9.

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.

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.

Malware on the System

Some malware on your system can cause this error.

you’ve got the option to only run scans to remove the malware.

This post provides some fixes for you.

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 it’s crucial that you check whether these services are running or not.

Step 2:Typeservices.mscand pressEnterto open theServiceswindow.

Additionally, you should probably set their Startup punch in toAutomatic.

yo double-poke the service to open thePropertieswindow and chooseAutomaticthat is in front ofStartuptype.

Then you’re able to see if the issue persists.

Then you’re gonna wanna reset Windows Firewall.

Here are the steps:

Step 1:Open theStartMenu, typecmdand search for it.

Then selectRun as an Administrator.

Step 2:Navigate to the following registry keys one by one.

And you should input the value data to the above registry keys.

Step 4:At last, cycle your setup.

What is Windows Defender tool Guard?

How to enable Windows Defender utility Guard?

This post provides 5 ways for you.

Final Words

When you see this fault signal, do not panic.

you might try the solutions one by one that I mentioned in this post.