MIME Type Settings for Windows Media Services

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Article ID: 288102 - View products that this article applies to.
This article was previously published under Q288102
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SUMMARY

Multipurpose Internet Mail Extension (MIME) types allow for the exchange of different kinds of files on the Internet. For Microsoft Windows Media files and live broadcasts to stream properly, both Web browsers and servers must have their MIME types configured to recognize Windows Media file types. Although browsers usually have their MIME types set automatically, in some cases you may have to set them manually. MIME types almost always have to be configured manually on a Web server.

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Web Server MIME Type Considerations

Consult the product documentation for the correct method of associating MIME types with the following file name extensions:

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File extensionMIME type
.asfvideo/x-ms-asf
.asxvideo/x-ms-asf
.wmaaudio/x-ms-wma
.waxaudio/x-ms-wax
.wmvaudio/x-ms-wmv
.wvxvideo/x-ms-wvx
.wmvideo/x-ms-wm
.wmxvideo/x-ms-wmx
.wmzapplication/x-ms-wmz
.wmdapplication/x-ms-wmd

Browser MIME Type Considerations

Browser MIME types should be set automatically when Windows Media Player is installed. If you have Microsoft Internet Explorer 2.0 or later or Netscape Navigator 3.0 or later, the MIME type is set automatically. This is true even when you install Internet Explorer or Netscape Navigator after installing the Windows Media Player. If you are having MIME type problems, reinstall Windows Media Player.

If you are using a browser other than Microsoft Internet Explorer, AOL, Opera, or Netscape Navigator (or if you have installed a browser after installing Windows Media Player), you may have to set the MIME types. The best way to do this is to reinstall Windows Media Player. To change these settings manually, refer to your browser documentation to determine how to add the following settings:

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ExtensionMIME Type
ASXvideo/x-ms-asf
WMAaudio/x-ms-wma
WAXaudio/x-ms-wax
WMVvideo/x-ms-wmv
WVXvideo/x-ms-wvx
WMvideo/x-ms-wm
WMXvideo/x-ms-wmx
WMZapplication/x-ms-wmz
WMDapplication/x-ms-wmd

For the helper application, specify Wmplayer.exe (Windows Media Player 7 and 7.1) or Mplayer2.exe (versions earlier than Windows Media Player 7).

Reinstalling Windows Media Player typically sets the MIME types for newly installed browsers. To change the settings in Windows Media Player version 6.4, click Options on the View menu, click the Formats tab, and then click to select the check boxes of the file types that you want to associate with Windows Media Player. Windows Media Player will register all selected file types in the Web browsers.

The third-party products that are discussed in this article are manufactured by companies that are independent of Microsoft. Microsoft makes no warranty, implied or otherwise, regarding the performance or reliability of these products.

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Article ID: 288102 - Last Review: November 3, 2003 - Revision: 2.2
APPLIES TO
  • Microsoft Windows Media Services 4.0
  • Microsoft Windows Media Services 4.1
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kbinfo KB288102

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