Please can someone help me this is driving me insane. I've tried re-installing WMP, and I've deleted the files excluding the folders in 'C:\Users\Ryan\Local Settings\Application Data\Microsoft\Media Player' to fix any corrupted settings and still nothing has worked. My laptop unable to play AVI files after upgrading to Windows 10, I don't know why this is happening. Some people still met playback errors when they play AVI with Windows Media Player on Windows 10 However, many AVI files cannot normally playback after upgrading to Windows 10. AVI stands for Audio Video Interleave, which is a multimedia container format created by Microsoft, that ordinarily, Windows Media Player has no problems opening and playing. As the default media player in Windows operating system(Windows 10 include), Windows Media Player (abbreviated WMP), makes it easy to play audio, video and view images for Windows users.