FIX: You may receive an error message when you try to seek through a streaming content file and the Fast Cache feature is enabled in Windows Media Services 9 Series

When you use Microsoft Windows Media Player to view a streaming content file, and you try to seek to a point in the content that has not been cached, you may receive the following error message: This problem occurs if the following conditions are true:

• The content is a Windows Media (.wmv) file that was created by using Microsoft Producer for Microsoft Office PowerPoint 2003.
• The file includes Rich Media content.
• The file is streamed from a Microsoft Windows Media Services 9 Series publishing point.
• Windows Media Services 9 Series has the Fast Cache feature enabled on the publishing point.

When you click More Information in the message box, the following information appears: If you do not seek to an uncached point in the file, the file plays as expected. If you seek to a point in the file that the Fast Cache feature has already cached, you do not experience an error.

Although Windows Media Services can seek through audio content and video content, Windows Media Services cannot seek through Rich Media content.

To resolve this problem, use one of the following methods:

• Turn off the Fast Cache feature on the publishing point from which the Rich Media content is being streamed.
• Turn off the Fast Cache feature for the streaming connection. To do this, use the following query string when you provide the URL of the Rich Media content.

  WMCache=0

• Do not save content from Microsoft Producer in the Rich Media format.

Microsoft has confirmed that this is a bug in the Microsoft products that are listed in the "Applies to" section.

For more information about query strings that Windows Media Player can use, click the following article number to view the article in the Microsoft Knowledge Base: