A key feature of the (often associated with updates like KB2929699) is the restoration of Windows Media Player to "N" and "KN" editions of the operating system. Core Functionality

: Restores the "Media Foundation" and "Windows Media Format" infrastructure required by other applications, such as Skype , to function correctly on these specific Windows versions.

Media Feature Pack for N and KN versions of Windows 8.1 - Microsoft

: Provides the necessary codecs (MPEG, WMA, AAC, H.264) and digital rights management (DRM) to play streamed content from websites and apps.

For users on standard Windows 8.1 systems, a notable update feature was the , which was a required installation to continue receiving future security updates after its release in 2014. 1 version to see if you need these features?