The scan may take longer than an hour to complete. Full Scan: This scans every file on your computer and all running programs as well.
This usually only takes a few minutes to complete. In the “Scan Options” menu, you will see a list of four different types of scans you can perform on your computer using Microsoft Defender. In the area below the “Current Threats” heading, click “Scan Options.” It’s possible to do a quick scan from here by clicking the “Quick Scan” button. If you haven’t scanned recently, you might want to consider doing a deeper scan. In the sidebar, click “Virus & Threat Protection.”