When you launch the Offline Scanner, Windows Defender will reboot your system into a secure recovery environment that is outside the regular Windows environment.
The Offline Scanner is another scan type of Windows Defender that is mainly designed to remove stubborn malware. What is Windows Defender Offline Scanner? In those cases, you can use the Windows Defender Offline Scanner. This happens when malware is infecting the Windows system processes or other files. However, there might be times when Windows Defender is unable to remove the threat. When you perform a virus scan, no matter the scan type, if a threat is detected, Windows Defender will try to remove it from your system.
