Windows 10 comes with .NET framework 4.5 pre-installed, but most of the programs require .NET 3.5 framework to run, so this post will show you how to download and install .NET Framework on Windows 10.
From Microsoft:
.NET Framework 3.5 builds incrementally on the new features added in .NET Framework 3.0. For example, feature sets in Windows Workflow Foundation (WF), Windows Communication Foundation (WCF), Windows Presentation Foundation (WPF) and Windows CardSpace. In addition, .NET Framework 3.5 contains a number of new features in several technology areas which have been added as new assemblies to avoid breaking changes. They include the following:
Deep integration of Language Integrated Query (LINQ) and data awareness. This new feature will let you write code written in LINQ-enabled languages to filter, enumerate, and create projections of several types of SQL data, collections, XML, and DataSets by using the same syntax.
ASP.NET AJAX lets you create more efficient, more interactive, and highly-personalized Web experiences that work across all the most popular browsers.
New Web protocol support for building WCF services including AJAX, JSON, REST, POX, RSS, ATOM, and several new WS-* standards.
Full tooling support in Visual Studio 2008 for WF, WCF, and WPF, including the new workflow-enabled services technology.
New classes in .NET Framework 3.5 base class library (BCL) that address many common customer requests.
Here’s how can you enable Windows .NET 3.5 on Windows 10.
How To Install .NET 3.5 Framework in Windows 10
1. Press the Windows key + R, type “appwiz.cpl” in Run box and click OK.
2. When Programs and Features window opens, click press Turn Windows features on or off.
3. Find .NET Framework 3.5 (includes .NET 2.0 and 3.0) on the list. If .NET Framework 3.5 (includes .NET 2.0 and 3.0) is available, select it and click OK.
4. Follow the instructions to complete the installation.
5. Reboot your system.
Or you can also visit Microsoft’s website and download .NET 3.5 Framework for Windows 10.
Checkout this video to illustrate this guide:
Hope something helps you.