If you want to improve your video watching experience, you can use Vidmore Player as your Windows Media Player alternative software. Windows Media Player does not support the playback of. Sadly, even though you install the Windows Media Player MP4 codec, the WMP not playing MP4 problem still exists. Part 2: MP4 File Not Playing? Use Windows Media Player Alternative Now you can get the Windows Media Player 12 MP4 playback. Step 4: Once the WMP MP4 codec installation process ends, Windows Media Player restarts automatically. Step 3: Search and download the MP4 codec installation package. Step 2: In the new Windows Media Player Error Message Help window, click the hyperlink below and move into the WMplugin website. Step 1: In the Windows Media Player MP4 not playing dialog, click the Web Help option. You can install MP4 video codecs for Windows Media Player as the following paragraphs show. What to do when you receive the notification saying A codec is required to play this file? Don’t worry about that. Audio and video are out of sync in Windows Media Player MP4.No sound while playing MP4 with Windows Media Player.Fail to play MP4 with Windows Media Player.There will be many different kinds of Windows Media Player not playing MP4 issues. mp4 files with Windows Media Player properly. If you don’t install the proper Windows Media Player MP4 codec, or the default Windows Media Player codecs are outdated, you cannot play.
Part 1: How to Play MP4 Files with Windows Media Player 12