Activate Windows Defender in Windows 8
Activate Windows Defender
- First, head to the modern-style Start screen and type "Windows Defender" to have Windows search for the program, then click on the Windows Defender icon when it appears in the results.
- A Windows Defender window will appear on the classic desktop. If Microsoft's security software is disabled, you'll seen a red bar with an "At risk" warning and an image of a computer screen with a big X on it.
- Next, click on the Settings tab at the top of the window. Make sure "Real-time protection" is selected in the left pane, then check the box next to "Turn on real-time protection (recommended)."
- Finally, click Save Changes at the bottom of the Window.
The above image is how you want your Settings tab to look after turning on Windows Defender.
You'll know it worked when the red "At risk" bar at the top of the Windows turns green and switches to "PC Status: Protected."