Windows Defender will not turn ON

[AWS]

Windows Defender unable to turn On.

 

 

I recently had Avast antivirus installed, just for an additional scan. But removed it properly using Revo Uninstaller.

 

I ran Services.msc and found that Windows Defender is set to manual (but is unable to be set to automatic, location is greyed).

 

When I run Action Center, in order to Turn ON Windows Defender it simply opens Windows/System32.

 

 

Found the following while researching online,

 

Performing miscellaneous checks:

* Windows Defender Disabled

[HKLMSOFTWAREMicrosoftWindows Defender] "DisableAntiSpyware" = dword:00000001

 

Unable to set to '0', displays an error message..

"Cannot edit DisableAntiSpyware"

 

 

Please help.

 

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