You receive an error that resembles the following:Ĭlick Web Help to display information about the missing codec and the corresponding link, if the codec is available to download. avi file that you want Windows Media Player to play. To resolve this problem, follow these steps.ĭouble-click the. avi file and check the error message in Windows Media Player for help.

Therefore, to resolve the problem, play the. The error message might also provide a link that you can click to download the codec file. In some cases, the error message in Windows Media Player will provide information about the codec file that is required. Note If you are running a version of Windows Media Player that is earlier than 6.4, go to the 'Earlier versions of Windows Media Player' bullet in the 'Next steps' section for help. If you are running Windows XP, check the help that is included with Windows Media Player to find the version.Īfter you determine which version of Windows Media Player you are running, go to the section for your operating system and Windows Media Player version. If you are running Windows Vista, you are running Windows Media Player 11. , you must know your Windows Media Player version.

To verify that you are logged on to Windows with a user account that is a computer administrator, visit the following Microsoft Web site: To determine which version of Windows that you are running. To resolve this problem, locate and download the required codec.īefore you start, you must know which version of Windows your computer is running. When that happens, you might be unable to use Windows Media Player to play this particular. In some cases, the file that you want to play uses a codec that is not available or compatible with the Windows Media Player. However, if the codec is not available on the server (for example, because the codec was not created by Microsoft), the Windows Media Player displays a message that your computer is missing a codec. If the codec is available, the Windows Media Player installs it on your computer and then plays the file. When you try to play a file that uses a codec that is not installed on your computer, the Windows Media Player tries to download the codec from a Microsoft server.

When you play the video file, your computer must have a decompressor installed that can read that particular compression format. When video files are created, they can be compressed to make the file size smaller by using a program (or compressor) that is installed on the developer's computer. This article is intended for a beginning to intermediate computer user. Unable to download an appropriate decompressor Error=80040200

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