Windows 10: Defender Firewall not starting with Windows - from 20H2 update

Recently updated from 1909 Pro to 20H2 Pro. Running Malwarebytes and Privacy VPN.


Every time my laptop is booted, I have a pop-up telling me Defender Firewall is turned off. Click here to turn on - Windows Securty Center shortly after booting.


Prior to the update, I had no issues no matter whether both Malwarebytes devices were turned on/off.


Any tips.....

:)

 

windows defender firewall

Hi Faye,

Third-party antivirus programs usually have their own uninstallers provided by the software developer. We suggest checking the developer's website or contacting their support team for assistance with uninstalling their program. After fully uninstalling the
third-party antivirus software, you may turn on Windows Defender by following these steps:

• Click Start.
• Type Windows Defender Security Center and press Enter.
• Click Firewall and network protection.
• Click Private (discoverable) network and click On.
• Click Public (non-discoverable) network and click On.

Let us know if you have any other concerns about Windows Defender.

 

Windows Defender Firewall failed to started after Windows Update

Hi,

Windows 10 Pro 64 bit 1909.

An update took place today. After reboot, Windows Defender Firewall failed to start

Control Panel -> Firewall

Windows Defender Firewall is not using the recommended setting to protect your computer. There is a button "Use recommended settings" but it leads to error

Windows Defender Firewall can't' change some of your settings

Error code 0x800706d9

Service control shows Windows Defender Firewall not running. I tried to start and it pops a warning and it's stuck in "Starting"

SFC and DISM return with no problem found.

No third-party antivirus installed.

I think this is must due to the update. Here are the list of installation today

KB4530384 Update for Microsoft Windows -- uninstallation failed

KB4538674 Security Update for Microsoft Windows -- uninstall option not available

KB4532693 Update for Microsoft Windows -- unistalled

KB4537759 Security Update for Microsoft Windows -- unistalled

KB4534132 Update for Microsoft Windows -- unistalled

However, the problem remained after these.

What can I do?

Thanks

 

Windows Defender Firewall error code 0x800706d9

Hi AnudieKatz.

Thank you for writing to Microsoft Community Forums.

Since you are facing an issue with the Windows Defender firewall, I would like to ask you few questions to get a better picture.

1. Are you using any other Anti-virus software?
   
2. Since when are you facing this issue?
   
3. Have you tried installing Picture viewer and Calendar app after it getting uninstalled?
   

Based on your information, I would like to inform you that if you are using third party anti-virus program Windows defender will automatically turn off from your system you will not able turn it on manually.

Let’s try simple troubleshooting steps and check if this helps in resolving the issue. Follow the below methods.

Method 1: Check the following services and ensure it is started.

1. Press Windows and R key together on your Keyboard.
   
2. Type Services.msc and hit Enter.
   
3. Search for the following services:
   

• Base filtering engine Service
• Remote Procedure Call Service
• Windows defender firewall service

4. Start the above services and reboot the device.

Method 2: I would suggest you to try running the troubleshooter to enable the firewall. Use the below link to run the troubleshooter.

Automatically diagnose and fix problems with Windows Firewall

If you are still facing the same issue after following the above steps, revert with the details asked.


Hope it helps.

Mala.S

Microsoft Community - Moderator