In Windows 10, type Windows Defender in the Cortana search box and press Enter. In the upper-right corner, click Settings. Scroll down to the bottom and your Engine version appears under Version info.

That fix, Windows Defender version 4.18.1908.7, unfortunately introduced another, just as serious, scanning problem: both quick and full scans stopped working after inspecting only a handful of files.

Published May 12, 2017 at 4:06 PM EDT Updated May 23, 2017 at 10:16 PM EDT. Microsoft has issued an emergency patch for a vulnerability in Windows Defender.

Windows 10 users can check their Windows Defender version by going to Windows Security, clicking on the Settings cog icon in the bottom left of the screen, and then selecting About.

To check if you have the latest version of the DLL, go to C:\ProgramData\Microsoft\Windows Defender\Definition Updates, open the folder with a long alphanumeric name, right-click on mpengine.dll ...

If you do choose to upgrade to the final release, it will remove Beta 2 (which expires December 31). By downloading the new version, you are also entitled to two free support incidents. I've used ...

Windows Defender has been around for some time in its current form, but that's about to change. It will soon become a Windows app. As you may have heard by now, Microsoft’s recent Windows 10 ...