It is almost as if Windows Media Player has a bug and since it is accessing this media file via a URL but the machine is not connected to a network, it thinks this file is unplayable. If the file is located on a removable storage card, insert the storage card. If the file is located on the Internet, connect to the Internet. Windows Media Player cannot play the file. However, when the Ethernet cable is unplugged, clicking the same MP4 video link results in Windows Media Player opening its own window, then displaying this error message: When the machine is connected to the internet, clicking an MP4 video link in any HTML page served by the local IIS server results in Windows Media Player opening up and playing the video in its own window. I do have the proper MIME type '.mp4' with 'video/mp4' setup in the IIS server, so I do not believe that is the problem.

IIS is configured to serve the MP4 videos as downloadable files, not streaming in any way. An internet connection is not required as this is all local storage and local hosting via IIS.

List of supported audio formatsĭolby Vision, H.265 and AV1 playback requires installation of add-on from Microsoft Store.ĭTS Audio playback requires DTS Sound Unbound from Microsoft Store with DTS:X Decoder license.ĪV1 playback requires installation of add-on from Microsoft Store.I have an IIS 6.1 website on a local Windows 7 32-bit machine that serves HTML and MP4 videos through Internet Explorer all on the local machine. This is a list of known supported formats in Media Player on Windows 10 and Windows 11. Accessibility has also been optimized, with some improved keyboard shortcuts and hotkey support for keyboard users and with other assistive technologies. Other changes include the album cover view being in fullscreen, and a refresh to the mini player. The new Media Player can also play video, as part of Groove's rebranding from a music streaming service to a media player. It was offered to all Windows 11 users starting on February 15, 2022, with Windows 10 users following in January 2023. It is the successor to Groove Music (previously Xbox Music), Microsoft Movies & TV and the original Windows Media Player. Windows Media Player is a video and audio player developed by Microsoft for Windows 11 and subsequently backported to Windows 10.

Windows media player mp4 to mp3