Please support the native MKV codecs of Windows 10, the current version of 4k is not using a compatible codecs

When i try playing a 1080p video using the MKV option, the playback in windows media player that is shipped with Windows 10 TP 9860 fails with the message stating a codec is not recognized that was used to compress the video. Windows 10 does now support MKV playback natively. http://www.neowin.net/news/windows-10-mkv-support-out-of-the-box Note: the mkv video linked from that site does play back in WMP with no additional codecs installed.