Run the Windows Media Player troubleshooter. Alternatively, you can go to Settings > Update & Security > Troubleshoot > Additional troubleshooters, and then select Windows Media Player to run the troubleshooter.

Windows Media player should now be reinstalled. Note: To troubleshoot issues like playback and codec problems, see the "Get help" section in Windows Media Player. Learn how to get Windows Media Player 12 for Windows 10, Windows 8.1, and Windows 7.

Windows 10. On a PC running Windows 10, select Start > File Explorer, or select File Explorer from the taskbar. Press and hold (or right-click) the MP4 file you want to play, select Open with, and then choose your preferred file player from the list of applications.

How to get the update. The Media Feature Pack for Windows 10/11 N is available for download as an Optional Feature. Here’s how to install the Media Feature Pack: On Windows 10 N: Select the Start button, then select Settings > Apps > Apps and Features > Optional features > Add a feature.

Windows Media Player 12 has built-in support for many popular audio and video formats. Sync music, videos, and photos, or stream media to your devices so you can enjoy your library anywhere, at home or on the road. For info about the latest version for your system, see Get Windows Media Player.

Download Windows Media Player. Get Windows Media Player for your version of Windows, or learn how to play Windows Media files on your Mac. Get the details here. Get help. Find help and how-to information for your version of Windows Media Player. Learn about the features and how to fix problems.

Windows Media Player 12: Video codecs. To properly play video (and even music files), Windows Media Player required an appropriate codec. Codecs are small programs that encode digital signals in a file or data and decode. Only in this way, the player can interpret the streams as a music or film and play correctly.

Plug-ins or add-ons add functionality—such as audio effects or DVD capability—to Windows Media Player. You can download plug-ins or add-ons for your version of the Player using the links below.

To search for Windows Media Audio converters, type wma into the search box, and then press Return. To search for Windows Media Video converters, type wmv into the search box, and then press Return. From the list of results, download and install the conversion software you want.

This article lists the multimedia file types that are supported by Windows Media Player 12. (How to determine your version of Windows Media Player). Note: Additional file formats might be supported if you install new codecs in Windows. For more information, see Codecs: frequently asked questions.