In an up-to-date version of Windows 10: Under Current threats, select Scan options. On the Virus & threat protection screen, do one of the following: Select Start, and then select Settings > Update & Security > Windows Security > Virus & threat protection. In this situation, you can start a Microsoft Defender Offline scan from Windows Security settings. You suspect your PC might have malware that's hiding on it, but your security software doesn’t detect anything. You might see a message stating that malware was found on your device, or receive a message in Windows Security notifying you that additional cleaning is required. Windows Security (named Windows Defender Security Center in previous versions of Windows) detects rootkits or other highly persistent malware on your PC and alerts you to use Microsoft Defender Offline. When should I use Microsoft Defender Offline? This topic describes how to use Microsoft Defender Offline in Windows 10, Windows 8.1, and Windows 7.
Microsoft Defender Offline is a powerful offline scanning tool that runs from a trusted environment, without starting your operating system.
