The system will reboot into the Windows Recovery Environment (WinRE) and run a command-line version of the antivirus. This process typically takes about 15 minutes .
It is highly recommended to create the bootable media on a to prevent malware from interfering with the creation process. When to Use an Offline Scan download windows defender offline scan
A blank USB flash drive or disc with at least of free space. The system will reboot into the Windows Recovery
Click on Virus & threat protection , then select Scan options . then select Scan options .