Microsoft KB Archive/929070

= FIX: Some content may not play when the servers that are running Windows Media Services 9 Series are load balanced =

Article ID: 929070

Article Last Modified on 3/26/2007

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APPLIES TO


 * Microsoft Windows Media Services 9 Series

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SYMPTOMS
Consider the following scenario:
 * Content is hosted on multiple servers that are running Microsoft Windows Media Services 9 Series.
 * The servers are load balanced.
 * The client computer that is running Microsoft Windows Media Player receives the content through a proxy server.

In this scenario, some content may not play on the client computer. Additionally, content that has played successfully on the client computer may not play again.



CAUSE
Control messages are passed between the client computer and the server that is running Windows Media Services 9 Series. In a load-balanced scenario, the HTTP 1.1 protocol allows the proxy server to route these control messages to different servers. The problem that is described in the &quot;Symptoms&quot; section occurs because the HTTP 1.1 logic in Windows Media Services 9 Series does not handle this behavior correctly.



Hotfix information
A supported hotfix is now available from Microsoft, but it is only intended to correct the problem that this article describes. Apply it only to systems that are experiencing this specific problem.

To resolve this problem, contact Microsoft Product Support Services to obtain the hotfix. For a complete list of Microsoft Product Support Services telephone numbers and information about support costs, visit the following Microsoft Web site:

http://support.microsoft.com/contactus/?ws=support

Note In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question.

Download information
The following files are available for download from the Microsoft Download Center.

Microsoft Windows Server 2003 for x86-based computers (all languages)
Download the WindowsServer2003-KB929070-x86-ENU.exe package now.

Microsoft Windows Server 2003 for x64-based computers (all languages)
Download the WindowsServer2003.WindowsXP-KB929070-x64-ENU.exe package now.

For more information about how to download Microsoft support files, click the following article number to view the article in the Microsoft Knowledge Base:

119591 How to obtain Microsoft support files from online services

Microsoft scanned this file for viruses. Microsoft used the most current virus-detection software that was available on the date that the file was posted. The file is stored on security-enhanced servers that help prevent any unauthorized changes to the file.

File information
The global version of this hotfix has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time item in Control Panel.



STATUS
Microsoft has confirmed that this is a bug in the Microsoft products that are listed in the &quot;Applies to&quot; section.



MORE INFORMATION
This problem occurs only when you use the HTTP protocol. You do not experience this problem when you use the RTSP protocol.

For more information about software update terminology, click the following article number to view the article in the Microsoft Knowledge Base:

824684 Description of the standard terminology that is used to describe Microsoft software updates

Keywords: kbqfe kbwinserv2003sp2fix kbfix KB929070

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