Customers running the Windows 10 N variant of the Fall Creators Update will need to install the latest version of the Media Feature Pack. The Media Feature Pack adds media related technologies removed due to European anti-competitive laws established years ago between Microsoft and the European Union. Microsoft has released a Media Feature Pack Update for each release of Windows 10 since it was launched in 2015. Users can download the latest version for Windows 10 1709 now.

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The N edition of Windows 10 include the same functionality as Windows 10, except for media-related technologies (Windows Media Player) and certain preinstalled media apps (Music, Video, Voice Recorder, and Skype). You must install other software from Microsoft or another company for this communication functionality and to play or create audio CDs, media files, and video DVDs, to stream music, and to take and store pictures. New features such as Cortana, Windows Hello, and PDF viewing in the new Edge browser rely on Windows Media files that are not present in these editions.

Some websites and software, such as Windows Store apps or Microsoft Office, use Windows Media-related files that are not incorporated into these editions of Windows. Users can make these websites and software work correctly by installing the Media Feature Pack for N editions of Windows 10. Source

Version 1709:

Media Feature Pack for N versions of Windows 10

Version 1703:

Download the x86-based version of Media Feature Pack update package now.
Download the x64-based version of Media Feature Pack update package now.

Users can find older versions here