If you experience no sound when playing MKV video files in Movies & TV app on Windows 11/10, then maybe the codecs may be missing.

Hi, I'm trying to get subtitles in mkv files to show up in winamp. I can watch the video and hear the audio just fine, I just can't see the subtitles. I can see them in media player classic; but ...

Learn how to download & install codec on Windows 11/10. Useful if you receive A codec is required to play this file error on Windows Media Player.