Download Security Update for Windows Media Format Runtime 11 for Windows XP SP2 and Windows Server 2003 SP2 x64 Edition (KB2834904) from Official Microsoft Download Center

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Security Update for Windows Media Format Runtime 11 for Windows XP SP2 and Windows Server 2003 SP2 x64 Edition (KB2834904)

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A security issue has been identified in a Microsoft software product that could affect your system.