MS08-069: Description of the security update for XML Core Services 4.0: November 11, 2008

Known issues with this security update

• 
  When you install this security update on a computer that is running Windows Vista or Windows Server 2008, you may have to restart the computer two times to complete the installation. This issue may occur if you install an XML Core Services 4.0–based update together with an update that contains inbox drivers. For example, the following updates contain inbox drivers:
  
  956697 Windows Server 2008 Hyper-V VSS writer is not used during a backup job because of corrupted or invalid virtual machine configuration files
  
  938371 A software update is available for the Windows Vista installation components
  
  
  This issue occurs because Microsoft Windows Installer (MSI)-based installations will not continue while inbox drivers are updating. This is because inbox drivers set the "impactful transaction" flag and the "reboot required" flag at the servicing stack level for Windows Vista and Windows Server 2008. Therefore, the update for XML Core Services 4.0 will fail during installation if an update that contains an inbox driver is applied first. After the inbox driver has installed, and then the computer is restarted, the installation of security update for XML Core Services 4.0 will succeed. However, an additional restart is required to complete the installation.
  
  
  To avoid this issue, install the security update for XML Core Services 4.0 before you install the update that contains inbox drivers.
• This security update may repeatedly appear in the update list on Microsoft Update or on Windows Update if one of the system files is corrupted or if it has not been updated correctly.
  
  For more information about this issue, click the following article number to view the article in the Microsoft Knowledge Base:
  
  
  941729 Security updates for Microsoft XML Core Services 4.0 Service Pack 2 may repeatedly appear in the update list on Microsoft Update or on Windows Update
  
  
• After you install security update 954430, certain application compatibility issues and reliability issues may occur in Microsoft XML Core Services 4.0 SP2 on a Windows Vista-based computer. To resolve these issues, install the update that is described in Microsoft Knowledge Base article 941833.
  For more information about this issue, click the following article number to view the article in the Microsoft Knowledge Base:
  
  
  941833 An update is available that improves the compatibility and the reliability of Microsoft XML Core Services 4.0 Service Pack 2 on a Windows Vista-based computer
  
  
  An update is available that improves the compatibility and the reliability of Microsoft XML Core Service 4.0 Service Pack 2 on a Windows Vista-based computer
• The following security updates do not support the complete removal of MSXML 4.0:
  • Security update 954430 for Microsoft XML Core Services (MSXML) 4.0
  • Security update 936181 for Microsoft XML Core Services (MSXML) 4.0
  • Security update 936181 for MSXML 4.0 Service Pack 1 (SP1)
  • Security update 936181 for MSXML 4.0 Service Pack 2 (SP2)
  This situation occurs because this version of MSXML is installed in side-by-side mode. To work around this issue, follow these steps:
  
  1. Remove security update 954430 by using the Add or Remove Programs item in Control Panel.
  2. Delete the Msxml4.dll file from the %SystemRoot%\System32 folder.
  3. Repair the previous installation of MSXML 4.0 by using the Add or Remove Programs item in Control Panel.
  The earlier versions of the Msxml4.dll file and of the Msxml4r.dll file are restored to the side-by-side folder and to the %SystemRoot%\System32 folder.
• You may receive the following error message when you install security update 954430 from Windows Update:
  Could not register type library for file c:\Windows\system32\msxml4.dll. Contact your support personnel.
  When this error occurs, you may also notice information that resembles the following in the log file:
  Error 1911. Could not register type library for file c:\Windows\system32\msxml4.dll. Contact your support personnel.
  MSI (s) (20:18) [17:52:31:612]: Product: MSXML 4.0 SP2 (KB954430) -- Error 1911. Could not register type library for file c:\Windows\system32\msxml4.dll. Contact your support personnel.
  === Logging stopped: 11/10/2006 17:53:07 ===
  MSI (c) (34:20) [17:53:07:252]: Note: 1: 1708
  MSI (c) (34:20) [17:53:07:260]: Product: MSXML 4.0 SP2 (KB954430) -- Installation failed.
  MSI (c) (34:20) [17:53:07:267]: Windows Installer installed the product. Product Name: MSXML 4.0 SP2 (KB954430). Product Version: 4.20.9839.0. Product Language: 1033. Installation success or error status: 1603.
  MSI (c) (34:20) [17:53:07:313]: Grabbed execution mutex.
  MSI (c) (34:20) [17:53:07:319]: Cleaning up uninstalled install packages, if any exist MSI (c) (34:20) [17:53:07:331]: MainEngineThread is returning 1603
  === Verbose logging stopped: 11/10/2006 17:53:07 ===
  To work around this problem, manually install the security update from the Microsoft Download Center, and then click Ignore when the error message is displayed. To confirm that the installation was successful, verify that the version of the Msxml4.dll file in the %SystemRoot%\System32 folder is 4.20.9870.0.

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