Microsoft releases new Windows Defender update packages very frequently to protect against various newly discovered malware. Once a while every three months or so, the company also pushes out these updates to Windows images WIM and VHD and ISOs, that are used to install Windows. Hence with the newest Windows 11 update available via the official MCT tool , you should get these definitions. This update package is necessary as a Windows installation image may contain old, outdated anti malware...
