You can turn on Microsoft Defender Antivirus through the Windows Security app. Here's how:
- Open Windows Security: Search for "Security" in the Start Menu and select "Windows Security."
- Navigate to Virus & threat protection: Click on the "Virus & threat protection" tile (or the shield icon on the left menu bar).
- Access Virus & threat protection settings: Select "Virus & threat protection settings."
- Enable Real-time protection: Toggle the "Real-time protection" switch to the "On" position.
That's it! Your Microsoft Defender Antivirus is now active and providing real-time protection against threats.