Windows 10: Windows Defender Firewall

Discus and support Windows Defender Firewall in AntiVirus, Firewalls and System Security to solve the problem; My Windows Defender Firewall Service has been disabled and can't be started.... Discussion in 'AntiVirus, Firewalls and System Security' started by SaiSasankh Garimella, Aug 1, 2020.

  1. Windows Defender Firewall


    My Windows Defender Firewall Service has been disabled and can't be started.

    :)
     
    SaiSasankh Garimella, Aug 1, 2020
    #1
  2. Yolvi Ell Win User

    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.
     
    Yolvi Ell, Aug 1, 2020
    #2
  3. Mala_S Win User
    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.

    https://support.microsoft.com/en-us...agnose-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
     
    Mala_S, Aug 1, 2020
    #3
  4. Windows Defender Firewall

    Windows Defender Firewall showing On and Off at the same time

    Hi Jerry,



    Thank you for writing to Microsoft Community Forums.



    I understand that the Windows Firewall shows as switched off even after turning it on. For better understanding of the issue, please answer the questions below.



    1. Which build version of Windows are you using currently?
    2. Are you aware of any changes being made to the PC?
    3. Do you have any security software/firewall installed?


    Meanwhile, I would suggest you to follow the steps mentioned below and check if that helps.



    Method 1:



    I would suggest you to run the troubleshooter for Windows Firewall and check if that helps. Refer the article

    Automatically diagnose and fix problems with Windows Firewall




    If the above method doesn’t t work, please follow the next method.



    Method 2:



    I would suggest you to try enabling the services responsible for Windows Firewall and check if that helps.



    1. Press Windows key + R. This will open
      Run. Alternatively, you can go to Start and search for ‘Run’.
    2. In Run dialog box, type services.msc and hit enter.
    3. Now look for the services: Security Center,
      Windows Defender Antivirus Service, Windows Defender Firewall Service,
      Windows Defender Advanced Thread Protection Service,
      and Windows Defender Antivirus Network Inspection Service.
    4. Right click on each service and click on Start.


    If the above method doesn’t work, please try the next method.



    Method 3:



    I would suggest you to check if any conflicting registry entries are present which are blocking Windows Defender Firewall to turn on.



    Note: Important this section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow
    these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs.




    Refer the article on
    How to back up and restore the registry in Windows




    1. Press Windows key + R. This will open
      Run. Alternatively, you can go to Start and search for ‘Run’.
    2. In Run dialog box, type regedit and hit enter.
    3. Now navigate to the location: HKEY_LOCAL_MACHINE\Software\Microsoft\Windows NT\CurrentVersion\Image File Execution Options
    4. Look if there are any registry keys named: MSASCui.exe, MpCmdRun.exe or MsMpEng.exe.
    5. If there are any such entries, then delete them by right clicking and selecting Delete.
    6. Click on Yes.
    7. Restart the PC.


    If the issue persists, please get back to us with the results of troubleshooting steps to assist you further.



    Regards,

    Prakhar Khare

    Microsoft Community – Moderator
     
    Prakhar_Khare, Aug 1, 2020
    #4
Thema:

Windows Defender Firewall

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