We recommend that you always download the latest version of this tool before each scan. Safety Scanner only scans when manually triggered and is available for use 10 days after being downloaded. The security intelligence update version of the Microsoft Safety Scanner matches the version described in this web page. To learn more, see 2019 SHA-2 Code Signing Support requirement for Windows and WSUS. Your devices must be updated to support SHA-2 in order to run Safety Scanner. When the scan has finished (usually takes about 15 minutes), your PC will automatically restart.Starting November 2019, Safety Scanner will be SHA-2 signed exclusively. After you are, your PC should restart. Microsoft Defender Offline will load and perform a quick scan of your PC in the recovery environment. You'll be prompted that you're about to be signed out of Windows. Select Microsoft Defender Offline scan, and then select Scan now.

In older versions of Windows 10: Under T hreat history, select Run a new advanced scan. In an up-to-date version of Windows 10 or Windows 11: 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. Save any open files and close all apps and programs. You suspect your PC might have malware hiding on it, but your security software doesn’t detect anything. Windows Security (also called Windows Defender Security Center in previous versions of Windows) detects rootkits or other highly persistent malware on your PC and recommends you use Microsoft Defender Offline. When should I use Microsoft Defender Offline? Microsoft Defender Offline is a powerful offline scanning tool that runs from a trusted environment, without starting your operating system. Windows 10 Windows 8.1 Windows 7 Windows 11 More.

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