Windows 8 and 8.1 Forums


Windows Defender - Turn On or Off in Windows 8

  1. #1
    Windows Defender - Turn On or Off in Windows 8

    Windows Defender - Turn On or Off in Windows 8
    How to Turn Windows Defender On or Off in Windows 8 and 8.1
    Published by Brink is offline
    12 Mar 2013
    Default Windows Defender - Turn On or Off in Windows 8

    Published by


    Brink's Avatar
    Administrator

    Join Date: Jul 2009
    Posts: 22,346

    How to Turn On or Off Windows Defender in Windows 8 and 8.1

    information   Information
    Windows 8 comes with a new version of Windows Defender which is the re-branded "Microsoft Security Essentials" (MSE). When Windows Defender is on, you're notified when viruses, spyware, malware (malicious software), or potentially unwanted software try to install or run on your PC.

    This tutorial will show you how to turn on or off Windows Defender in Windows 8, Windows RT, Windows 8.1, and Windows RT 8.1.

    You must be signed in as an administrator to be able to do the steps in this tutorial.

    Note   Note
    In order for Windows Defender to run, it will require that the Windows Defender Service remain "Started" (running) and set to "Automatic".

    How to Start, Stop, and Disable Services in Windows 8

    warning   Warning
    Some 3rd party antivirus (AV) programs may turn off Windows Defender when they are installed to be used instead, and will not allow Windows Defender to be turned back on until the 3rd party AV has been completely uninstalled.




    CONTENTS:

    • Option One: To Turn On or Off Windows Defender using Group Policy
    • Option Two: To Turn On or Off Windows Defender using a REG file



    EXAMPLE: Windows Defender Turned Off
    Name:  Windows_Defender_OFF.jpg
Views: 13136
Size:  28.1 KB





    Windows Defender - Turn On or Off in Windows 8 OPTION ONE Windows Defender - Turn On or Off in Windows 8
    To Turn On or Off Windows Defender using Group Policy

    Note   Note
    Local Group Policy Editor is only available in the Windows 8 Pro and Enterprise editions.

    All editions can use Option Two below.


    1. Open the Local Group Policy Editor.

    2. In the left pane of Local Group Policy Editor, navigate to the location below. (see screenshot below)

    Computer Configuration\Administrative Templates\Windows Components\Windows Defender

    Click image for larger version

    3. In the right pane of Windows Defender in Local Group Policy Editor, double click/tap on the Turn off Windows Defender policy to edit it. (see screenshot above)

    4. Do step 5 (on) or step 6 (off) below for what you would like to do.


    5. To Turn On Windows Defender

    A) Select (dot) Not Configured or Disabled, click/tap on OK, and go to step 7 below. (see screenshot below)

    NOTE: Not Configured is the default setting.


    6. To Turn Off Windows Defender

    A) Select (dot) Enabled, click/tap on OK, and go to step 7 below. (see screenshot below)

    Click image for larger version

    7. When finished, you can close the Local Group Policy Editor if you like.

    8. If you are turning on Windows Defender, then open Windows Defender, and click/tap on Start now.

    Click image for larger version






    Windows Defender - Turn On or Off in Windows 8 OPTION TWO Windows Defender - Turn On or Off in Windows 8
    To Turn On or Off Windows Defender using a REG file

    Note   Note
    The .reg files below will add and modify the DWORD values in the registry keys below.

    HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender

    DisableAntiSpyware DWORD

    (delete) or 0 = On
    1 = Off


    1. Do step 2 (on) or step 3 (off) below for what you would like to do.


    2. To Turn On Windows Defender
    NOTE: This is the default setting.

    A) Click/tap on the Download button below to download the file below, and go to step 4 below.

    Turn_On_Windows_Defender.reg

    download


    3. To Turn Off Windows Defender

    A) Click/tap on the Download button below to download the file below, and go to step 4 below.

    Turn_Off_Windows_Defender.reg

    download

    4. Save the .reg file to your desktop.

    5. Double click/tap on the downloaded .reg file to merge it.

    6. If prompted, click/tap on Run, Yes (UAC), Yes, and OK to approve the merge.

    7. If you are turning on Windows Defender, then open Windows Defender, and click/tap on Start now if needed.

    Click image for larger version

    9. If you like, you can now delete the downloaded .reg file.


    That's it,
    Shawn


  2. #1


    Posts : 3
    windows 8


    Brilliant - that seems to have done it. Or, more precisely, that has done it!

    Thanks

      My System SpecsSystem Spec

  3. #2


    Posts : 22,346
    64-bit Windows 10


    You're most welcome Coxwall. Glad it could help.
      My System SpecsSystem Spec

  4. #3


    Posts : 8
    windows 8


    hellow I'm neww as of minuets ago. Don't know alot of how your forum works. I'm not a very tech person and need help with my new laptop. Looking around the internet I came across your forum and am sure I came to the rite place. Here's my question, we have a new hp laptop and it has norton anti virus for free 60 trail. I just found out threw reading on the internet that there is also a program that come with windows 8 called windows defender, do I have to uninstall the temporary password first before I atemp to turn on the windows defender?
    Thank - you
    Bailey
      My System SpecsSystem Spec

  5. #4


    Posts : 22,346
    64-bit Windows 10


    Hello Bailey, and welcome to Eight Forums.

    When Norton is installed it will turn off Windows Defender by default. You would need to uninstall Norton to be able to turn on Windows Defender. If Norton doesn't uninstall normally for some reason, then you could use the Norton Removal Tool to do so.

    Hope this helps,
    Shawn
      My System SpecsSystem Spec

  6. #5


    Posts : 2
    Windows 8


    Dear Admin,
    Kindly assist me. Bought my PC with windows 8, uninstalled norton, but each time I try to Turn on windows defender the computer opens the system files and I do not have any idea of what to do with these system files as nothing seems clear and relevant as to indicate which one to open for the defender to be active. Please help.
      My System SpecsSystem Spec

  7. #6


    Posts : 22,346
    64-bit Windows 10


    Hello Dr. Joshuangwisha, and welcome to Eight Forums.

    For now, please go ahead and post screenshots of what you are seeing different than from the tutorial to help see what may be the issue.

    Screenshots and Files - Upload and Post in Eight Forums
      My System SpecsSystem Spec

  8. #7


    Posts : 2
    Windows 8

    Windows Defender Turn on


    When I click on turn on spyware or virus protection, all it does is open the Windows>Systems32 files.
      My System SpecsSystem Spec

  9. #8


    Posts : 22,346
    64-bit Windows 10


    Dr. Josh,

    It sounds like your system may be infected. Either way, I would recommend to reset Windows 8 to start fresh to be safe. Be sure to back up anything that you do not want to lose first to another location.
      My System SpecsSystem Spec

  10. #9


    Posts : 1
    windows 8


    I have windows 8 on my desktop and am trying to turn on windows defender. I had avg, malware bytes, and spybot on there and want to take avg off and just use defender. I tried to start it but it told me that I had another antivirus running so I deleted avg and it still wont start. I tried all the forums on here and none worked. can someone please help
      My System SpecsSystem Spec

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Windows Defender - Turn On or Off in Windows 8
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