In this tutorial I will be showing you guys how to resolve the follow error: "This app is turned off by group policy f you are using another app to check for malicious or unwanted software, use Security and Maintenance to check that app's status. To show this app to run, contact your security administrator to enable the program via group policy." Specifically when you try to turn on the Windows Defender app: If you're using another app to check for malicious for unwanted software, use action center to check app's status to allow windows defender to run, contact your security administrator to enable the program via group policy" This tutorial will apply for computers, laptops, desktops, and tablets running the Windows 10, Windows 8/8.1, Windows 7 operating systems.Works for all major computer manufactures (Dell, HP, Acer, Asus, Toshiba, Lenovo, Samsung)