


This tool does not replace your antimalware product. Safety scanner is a portable executable and does not appear in the Windows Start menu or as an icon on the desktop. 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. It won’t however scan your Outlook emails or your network drives for any possible infections.Starting November 2019, Safety Scanner will be SHA-2 signed exclusively. The program expires after 10 days but you can always re-download it with the updated virus definitions. You may use on Windows XP, Vista or Windows 7 machines and, unlike Microsoft’s other antivirus software, Safety Scanner doesn’t perform a check for genuine Windows. Microsoft Safety Scanner is available as a free download for both 32-bit and 64-bit version of Windows. You may either do a thorough scan - check every file and folder - or a quick scan that checks a limited number of folders that are most likely to contain viruses, malware or spyware. If it detects a problem, the infected files will be quarantined. This is a free antivirus software, always updated with the latest definitions, and requires no installation - all you need to do is copy the program executable msert.exe to an infected computer and double-click that file. You should check out Microsoft Safety Scanner. Is your computer infected with a virus that is preventing you from downloading security updates from the Internet or from running any antivirus program on that machine? Or are your looking for an antivirus software that can be carried on a USB drive to quickly scan any disconnected computer(s) for viruses or malware?
