Reinstalling Defender

maybe

Well-Known Member
#1
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.
 


Attachments

maybe

Well-Known Member
#2
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).
 


kemical

Windows Forum Admin
Staff member
Premium Supporter
Microsoft MVP
#3
(I do have Avast running if that is relevant).
This will disable Defender. Uninstall Avast and Defender should pop back.
 


maybe

Well-Known Member
#4
Can't I run both in W10?
I do in w8.1.
 


kemical

Windows Forum Admin
Staff member
Premium Supporter
Microsoft MVP
#5
Hmm... I think it depends on which AV it actually is. Some will run alongside Defender and others will disable it. (I think)
 


maybe

Well-Known Member
#6
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.
 


kemical

Windows Forum Admin
Staff member
Premium Supporter
Microsoft MVP
#7
Not a problem Maybe. Glad to help.. :)
 


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