Ok, then try this:
Fire up the search box, then type CMD. From there, right-click on Command Prompt, then select Run as Administrator.
Once the CMD is up and running, please copy and paste the following command in it and hit Enter:
REG DELETE "HKLM\SOFTWARE\Policies\Microsoft\Windows Defender" /v DisableAntiSpyware
Source: https://www.thewindowsclub.com/virus-threat-pro...
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Note: This is a non-Microsoft website. The page appears to be providing accurate, safe information. Watch out for ads on the site that may advertise products frequently classified as a PUP (Potentially Unwanted Products). Thoroughly research any product advertised on the site before you decide to download and install it.