Microsoft KB Archive/912784

= An access violation occurs when you play an encrypted multimedia stream in Windows XP =

Article ID: 912784

Article Last Modified on 8/29/2007

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APPLIES TO


 * Microsoft Windows XP Media Center Edition 2002
 * Microsoft Windows XP Professional
 * Microsoft Windows XP Home Edition

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SYMPTOMS
When you use Microsoft DirectShow and an AVStream device driver to play an encrypted multimedia stream in Microsoft Windows XP, an access violation occurs in the KsPinGetLeadingEdgeStreamPointer function.



CAUSE
This problem occurs only if the following conditions are true in the AVStream device driver that is provided by the independent hardware vendor (IHV):
 * The EndOfStream method returns a null value. Alternatively, the size of the data frame that is returned is zero.
 * The input pin property has the KSPIN_FLAG_GENERATE_MAPPINGS flag.



Hotfix information
A supported hotfix is now available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing this specific problem. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next service pack that contains this hotfix.

To resolve this problem, submit a request to Microsoft Online Customer Services to obtain the hotfix. To submit an online request to obtain the hotfix, visit the following Microsoft Web site:

http://go.microsoft.com/?linkid=6294451

Note If additional issues occur or any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. To create a separate service request, visit the following Microsoft Web site:

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

Prerequisites
No prerequisites are required.

Restart requirement
You do not have to restart the computer after you apply this hotfix.

Hotfix replacement information
This hotfix does not replace any other hotfixes.

File information
The English 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 tool in Control Panel.



MORE INFORMATION
For more information about standard terminology that is used to describe Microsoft software updates, 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 kbhotfixserver kbwinxpsp3fix kbbug kbfix kbpubtypekc KB912784

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