Windows Media Player can't play the file. This error can occur for a variety of reasons.
Things to try:
Make sure the file type is supported by the Player. For a list of file types (formats) that are supported by Windows Media Player, see the "Supported file types" section.
If the file type is supported by the Player, make sure the codec used to compress the file is installed on your computer. Some codecs aren't supported by the Player. For more information about codecs, see Codecs: frequently asked questions.
Try changing the audio output device associated with the Player.
Click Organize, and then click Options.
Click the Devices tab, and then double-click Speakers.
In the Select the audio device box, select a different sound card or sound controller.
If the file type is supported by the Player, make sure you're trying to play it in a way that is supported by the Player. For example, you can't drag a DVD file with a .vob file name extension from a DVD to the Windows Media Player icon or open a .vob file by clicking Open on the File menu.
If you're trying to play a multipart file, use a newsreader or some other program to combine the files, and then try again.
The following table lists the file types (formats) that are supported by Windows Media Player.
If you can't use a file that is included in this table, the file might have been encoded with a codec that isn't supported by Windows Media Player.
.3gp, .3gpp, .3g2, and .3gp2
Audio Data Transport Stream (ADTS) audio files
.adts and .adt
AU audio files
.au and .snd
Audio Interchange File Format (AIFF) audio files
.aif, .aifc, and .aiff
.m2ts, .m2t, and .mts
CD audio disc
JPEG picture file
Adobe Flash animation file
Microsoft Recorded TV Show
MP3 audio files
.mp3 and .m3u
MPEG video files
.mpeg, .mpg, .m1v, .mp2, .mpa, .mpe, .mp2v, .mpv2, .mp4, .mp4v, .m4v, .m4a, and .mov
MPEG-2 TS files
.tts and .ts
Musical Instrument Digital Interface (MIDI) audio files
.mid, .midi, and .rmi
Windows audio and video files
.avi and .wav
Windows Media audio and video files
.asf, .asx, .wax, .wm, .wma, .wmd, .wmp, .wmv, .wmx, .wpl, and .wvx
Windows Media Player skin file
To play DVDs, you must have a DVD-ROM drive and a software or hardware DVD decoder installed on your computer. If you don't have a compatible DVD decoder installed, DVD-related commands, options, and controls don't appear in the Player and you can't play DVDs.
Some, but not all, versions of Windows include a DVD decoder. For more information about DVD decoders for Windows, go to the
DVD Playback Pack for Windows
webpage on the Microsoft website.
To play .mp2v and .dvr-ms files, you must have a software or hardware DVD decoder installed on your computer.
For more information on supported file types, read the article
Windows Media Player multimedia file formats on the Microsoft website.
For general help with Windows Media Player, search the Microsoft Support site.