You can manually start a virus/malware scan on your device by using the “Scan Now” button on the Home screen in Windows Defender. In the “Scan Options” section, choose the type of scan that you want and click on the “Scan Now” button.

Three ways to the manual scan of Windows defender:

Quick Scan: Quick scan checks your device areas like Registry, Windows Device folder and more.

Full Scan: Full scan checks all files on your system and all working programs.

Custom Scan: Custom scan will check only individual drivers, folders or files that you choose. Choose ‘Select “Custom scan” check box, and click on the “Scan Now” button to open a dialog where you can choose drivers, folders of files to scan and pick on the “OK” button to start the scan.

Also, Visit Here: https://getassist.net/wi...-be-started-error-fixed/