When it was first released, .NET Framework 4.0 introduced several transformative technologies that defined Windows programming for over a decade: Parallel Computing : Introduced the Task Parallel Library (TPL)

This version was the primary runtime for Windows Vista, Windows 7, and Windows Server 2008 applications before the release of 4.5, 4.6, 4.7, and 4.8.

Save this article or bookmark the official Microsoft download pages. Share it with anyone still searching for “v4030319” – you now have the definitive answer.

When Windows or an application checks the file version of mscorlib.dll or clr.dll , you will see 4.0.30319.xxxxx . This build number is the core Common Language Runtime (CLR) for .NET Framework 4 through 4.5.2.

He found himself on a site that looked like a relic from 2005. The layout was stark white with cobalt blue headers. In the center of the screen, a simple, unadorned link read: .