


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
