To enable MKV playback without switching players, you can use one of these three primary methods: How to open .MKV videos using Windows Media Player
If you're trying to play an MKV file on Windows Media Player and only getting sound or an "unsupported format" error, it's because Windows Media Player doesn't natively include the necessary decoders for this container format. While Windows 10 and 11 have improved their built-in support, you often still need to download a specific codec to bridge the gap. How to Download and Install MKV Codecs download codec mkv windows media player