Right-click the file and select "Open with" to choose your preferred media player (e.g., VLC, Windows Media Player).

did you see this file (email, download, shared folder)? What is the file size ? Are you unable to open it ?

Use QuickTime Player or any compatible video player. Android: Open via your file manager. How to Manage/Convert the File If the file won't open or you need to change its format: