12.17.2008 - Microsoft .NET Framework 3.5 Service Pack 1 (full package) (KB951847)

Microsoft .NET Framework 3.5 Service Pack 1 is a full cumulative update that contains many new features building incrementally upon .NET Framework 2.0, 3.0, 3.5, and includes cumulative servicing updates to the .NET Framework 2.0 and .NET Framework 3.0 subcomponents. Supported Operating Systems: Windows Server 2003; Windows Server 2008; Windows Vista; Windows XP - Download Microsoft .NET Framework 3.5 SP1 (Full Package) - View Microsoft Knowledge Base Article - 951847 - Visit Microsoft Corporation * The Microsoft .NET Framework 3.5 Service Pack 1 (Bootstrapper) is also available for Windows Server 2003; Windows Server 2008; Windows Vista; Windows XP. IMPORTANT: After installing the .NET Framework 3.5 SP1 update you should immediately install the update KB959209 to address a set of known application compatibility issues. - Download .NET 3.5 SP1 Update for Windows XP x86, and Windows Server 2003 x86 - Download .NET 3.5 SP1 Update for Windows Vista x86, and Windows Server 2008 x86