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.

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

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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.

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

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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:

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