Download Microsoft .NET Framework 3.5 Service Pack 1, Windows Vista Service Pack 2, and Windows Server 2008 Service Pack 2 Update from Official Microsoft Download Center

Microsoft .NET Framework 3.5 Service Pack 1, Windows Vista Service Pack 2, and Windows Server 2008 Service Pack 2 Update

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Install this update to help strengthen authentication credentials in specific scenarios. After you install this item, you may have to restart your computer.