Windows Presentation Foundation
Applies To: Windows 10, Windows 7, Windows 7 with SP1, Windows 8, Windows 8 Pro, Windows 8.1
Windows Presentation Foundation (WPF) in Visual Studio 2015 provides developers with a unified programming model for building modern line-of-business desktop applications on Windows.
The Mozilla Firefox browser disables the Microsoft Framework Assistant extension. See How to remove the .NET Framework Assistant for Firefox for information on how to remove the extension from Firefox.