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Article ID: 2431208 - Last Review: June 10, 2011 - Revision: 1.1
An update for the Microsoft .NET Framework may fail to install when the Microsoft .NET Framework 4 is installed and a restart is pending
Support for Windows Vista Service Pack 1 (SP1) ends on July 12, 2011. To continue receiving security updates for Windows, make sure you're running Windows Vista with Service Pack 2 (SP2). For more information, refer to this Microsoft web page: Support is ending for some versions of Windows
(http://windows.microsoft.com/en-us/windows/help/end-support-windows-xp-sp2-windows-vista-without-service-packs)
.
An update for the Microsoft .NET Framework version 4 may not install if the following conditions are true:
- You previously installed the Microsoft .NET Framework 4 or the Microsoft .NET Framework 4 Client Profile.
- A system restart is pending but has not been completed before you install the new update.
Note If you install the update by using the Windows Update site, it may seem that the update was offered and installed. However, after you restart the computer, the same update is offered again.
This issue occurs because, when the Microsoft .NET Framework 4 is installed, certain components are locked or are being used until the system is restarted. These components cannot be updated until the system is restarted. Because of this, in the scenario described in the Symptoms section, the version of the shim (mscoree.dll) is the Microsoft .NET Framework version 3.5 SP1 or earlier. The installation of the Microsoft .NET Framework 4 deploys certain settings which prevent the older shim from working correctly until the shim is updated after the system is restarted. In this scenario, if you try to install another update for the Microsoft .NET Framework while the restart is pending, the update will try to use a Global Assembly Cache (GAC) deployment for the files in the update. This GAC operation requires the shim. However, because the shim is in an inconsistent state pending a restart, the GAC operation will fail. This causes the update to fail.
To avoid this issue, restart the system before you install the new Microsoft .NET Framework updates. If you have already experienced the condition, and an update did not install because of this issue, restart the computer and then reinstall the new updates.
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
APPLIES TO
- Microsoft .NET Framework 1.1 Service Pack 1
- Microsoft .NET Framework 2.0 Service Pack 2
- Microsoft .NET Framework 3.5
- Microsoft .NET Framework 3.5 Service Pack 1
- Microsoft .NET Framework 4
- Windows 7 Enterprise
- Windows 7 Home Basic
- Windows 7 Home Premium
- Windows 7 Professional
- Windows 7 Ultimate
- Windows Server 2008 R2 Standard
- Windows Server 2008 R2 Enterprise
- Windows Server 2008 R2 Datacenter
- Windows Server 2008 Service Pack 2, when used with:
- Windows Server 2008 for Itanium-Based Systems
- Windows Server 2008 Datacenter
- Windows Server 2008 Enterprise
- Windows Server 2008 Standard
- Windows Web Server 2008
- Windows Server 2008 for Itanium-Based Systems
- Windows Server 2008 Datacenter
- Windows Server 2008 Enterprise
- Windows Server 2008 Standard
- Windows Web Server 2008
- Windows Vista Service Pack 2, when used with:
- Windows Vista Business
- Windows Vista Enterprise
- Windows Vista Home Basic
- Windows Vista Home Premium
- Windows Vista Starter
- Windows Vista Ultimate
- Windows Vista Enterprise 64-bit Edition
- Windows Vista Home Basic 64-bit Edition
- Windows Vista Home Premium 64-bit Edition
- Windows Vista Ultimate 64-bit Edition
- Windows Vista Business 64-bit Edition
- Windows Vista Service Pack 1, when used with:
- Windows Vista Business
- Windows Vista Enterprise
- Windows Vista Home Basic
- Windows Vista Home Premium
- Windows Vista Starter
- Windows Vista Ultimate
- Windows Vista Enterprise 64-bit Edition
- Windows Vista Home Basic 64-bit Edition
- Windows Vista Home Premium 64-bit Edition
- Windows Vista Ultimate 64-bit Edition
- Windows Vista Business 64-bit Edition
- Microsoft Windows Server 2003 Service Pack 2, when used with:
- Microsoft Windows Server 2003, Standard Edition (32-bit x86)
- Microsoft Windows Server 2003, Enterprise Edition (32-bit x86)
- Microsoft Windows Server 2003, Datacenter Edition (32-bit x86)
- Microsoft Windows Server 2003, Web Edition
- Microsoft Windows Server 2003, Datacenter x64 Edition
- Microsoft Windows Server 2003, Enterprise x64 Edition
- Microsoft Windows Server 2003, Standard x64 Edition
- Microsoft Windows XP Professional x64 Edition
- Microsoft Windows Server 2003, Datacenter Edition for Itanium-Based Systems
- Microsoft Windows Server 2003, Enterprise Edition for Itanium-based Systems
- Microsoft Windows XP Service Pack 3, when used with:
- Microsoft Windows XP Home Edition
- Microsoft Windows XP Professional
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