1. Open the Start menu and type “Windows Defender” into the search bar.
2. Select Windows Defender Security Center.
3. Click the Shield icon at the top of the screen.
4. If the shield icon is not visible, click on the hamburger menu at the top left of the window.
5. Select Virus & threat protection.
6. Click Turn On.
7. Click Yes when prompted.
8. Windows Defender will now be enabled to protect your computer.