MS13-057: Description of the security update for Windows Media Format Runtime 9.5 (wmvdmod.dll) on Windows XP: July 9, 2013

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Article ID: 2834903 - View products that this article applies to.
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Microsoft has released security bulletin MS13-057. To view the complete security bulletin, visit one of the following Microsoft websites:

How to obtain help and support for this security update

Help installing updates: Support for Microsoft Update

Security solutions for IT professionals: TechNet Security Troubleshooting and Support

Help protect your computer that is running Windows from viruses and malware: Virus Solution and Security Center

Local support according to your country: International Support

Known issue with this security update

Users of Windows XP SP3 may experience problems where WMV files that are protected by digital rights management (DRM) do not play. Microsoft is investigating the situation and will take appropriate action to help our customers. As a workaround, we recommend that users install Windows Media Player 11 to eliminate this problem.


The English (United States) version of this software update installs files that have the attributes that are listed in the following tables. The dates and times for these files are listed in Coordinated Universal Time (UTC). The dates and times for these files on your local computer are displayed in your local time and with your current daylight saving time (DST) bias. Additionally, the dates and times may change when you perform certain operations on the files.
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File nameFile versionFile sizeDateTimePlatform


Article ID: 2834903 - Last Review: September 16, 2013 - Revision: 4.0
Applies to
  • Microsoft Windows XP Service Pack 3, when used with:
    • Microsoft Windows XP Home Edition
    • Microsoft Windows XP Professional
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