The Microsoft .NET Framework 3 is the new managed code programming model for Windows®. It combines the power of the .NET Framework version 2.0 with new technologies for building applications that have visually compelling user experiences, seamless communication across technology boundaries, and the ability to support a wide range of business processes.
Install .NET Framework 3.5 on Windows 10, 8.1, 8 The .NET Framework 3.5 SP1 offline installer is available on the .NET Framework 3.5 SP1 Download page and is available for Windows versions prior to Windows 10. Install the .NET Framework 3.5 on Demand. You may see the following configuration dialog if you try to run an app that requires the .NET Framework 3.5. Download Microsoft .NET Framework 3.5 Service Pack 1 from .NET Framework version 3.5 Service Pack 1 provides the following new features and improvements: ASP.NET Dynamic Data, which provides a rich scaffolding framework that enables rapid data driven development without writing code, and a new addition to ASP.NET AJAX that provides support for managing browser history (back button support). Update for the .NET Framework 3.5 on Windows 8, Windows 8 Jan 11, 2019
Install the .NET Framework on Windows 8.1 | Microsoft Docs
Hotfix rollup 3096438 for the .NET Framework 3.5 SP1 on Oct 29, 2015 Run .NET Framework 1.1 apps on Windows 8, Windows 8.1, or
Nov 17, 2018
In Windows 7 SP1 and Windows Server 2008 R2 SP1, Update for Microsoft.NET Framework 4.8 (KB4503548) is displayed as an installed product under Programs and Features in Control Panel. In Windows Server 2012, Update for Microsoft Windows (KB4486081) is displayed under Installed Updates in … microsoft net framework 3.5 sp1 patch for windows 8 Jan 14, 2013 Download Microsoft .NET Framework 1.1 Service Pack 1 from Aug 30, 2004