Problem is still present and the current situation is as follows: MSCONFIG > SERVICES: Windows Security Service is Running (cannot be Stopped) Windows Defender Firewall is Running (cannot be Stopped) Windows Defender Advanced Threat Protection Service - is showing as Stopped. TASK MANAGER > SERVICES: WinDefend is showing as Stopped. TASK MANAGER>Startup: Windows Security Notification Icon: Enabled. SERVICES>Services (Local)> Windows Security Service (Running)> Manual In Properties option to make any changes to the above is greyed out.