Reinstalling Defender

Discussion in 'Windows 10 Upgrade and Installation' started by maybe, Aug 16, 2015.

  1. maybe

    maybe Well-Known Member

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    I updated an older laptop from W7 to W10. I used the media creator and the update was smooth and uneventful.

    As part of my explorations I decided to remove all the metro apps using
    Get-AppxPackage | Remove-AppxPackage
    because I never use them

    Don't know if this has anything to do with it but I notice that Windows Defender is not running and its settings are grayed out. Can't change them. See attached images.

    And when I tried to download Windows Defender, a popup appears asking me to register my windows or enter the registration key. This is an upgrade from a legit Windows 7 that used to run Defender.

    How do I reinstall Defender? Where do I find the registration number it wants? Why do I need to "purchase" it? Thanks.
     

    Attached Files:

  2. maybe

    maybe Well-Known Member

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    Additional information:
    I downloaded WindowsDefender.msi but when I tried to run it a popup said I didn't need to install Defender because it was included in "vista" and didn't give me the option to install it.

    If it is included why can't I change the settings in the images above and why do I get a popup saying WD is not running?

    (I do have Avast running if that is relevant).
     
  3. kemical

    kemical Windows Forum Admin
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    This will disable Defender. Uninstall Avast and Defender should pop back.
     
  4. maybe

    maybe Well-Known Member

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    Can't I run both in W10?
    I do in w8.1.
     
  5. kemical

    kemical Windows Forum Admin
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    Hmm... I think it depends on which AV it actually is. Some will run alongside Defender and others will disable it. (I think)
     
    maybe likes this.
  6. maybe

    maybe Well-Known Member

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    You are correct. I checked my 8.1 laptop and Windows Defender was turned off there too because I have Avast running. I had wrongly assumed Defender was on because Windows Update regularly downloads Defender updates. Wrong assumption.
    Thanks for the help. Sorry to have troubled you.
     
  7. kemical

    kemical Windows Forum Admin
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    Not a problem Maybe. Glad to help.. :)
     

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