Microsoft .Net Framework 4.0 Version

Microsoft .NET Framework 4 (Web Installer)

 The Microsoft .NET Framework 4 web installer package downloads 
 and installs the .NET Framework components required to run on 
 the target machine architecture and OS. An Internet connection is

 required during the installation. .NET Framework 4 is required to 
 run and develop applications to target the .NET Framework 4.

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The .NET Framework is Microsoft's comprehensive and consistent programming model for building 
applications that have visually stunning user experiences, seamless and secure communication, and
 the ability to model a range of business processes.
The .NET Framework 4 works side by side with older Framework versions. Applications that are based on earlier versions of 
the Framework will continue to run on the version targeted by default.
The Microsoft .NET Framework 4 provides the following new features and improvements:


   Improvements in Common Language Runtime (CLR) and Base Class Library (BCL)

�         Performance improvement including better multicore support, background garbage collection, and profiler
       attach on server.

�         New memory mapped file and numeric types.

�         Easier debugging including dump debugging, Watson minidumps, mixed mode debugging for 64 bit and 
        code contracts.

�         For a comprehensive list of enhancements to CLR and BCL go here.

�         Innovations in the Visual Basic and C# languages, for example statement lambdas, implicit line 
       continuations, dynamic dispatch, and named/optional parameters.

�         System Requirements

�          

Supported Operating System

Windows 7, Windows 7 Service Pack 1, Windows Server 2003 Service Pack 2, Windows Server 2008,

Windows Server 2008 R2,Windows Server 2008 R2 SP1, Windows Vista Service Pack 1,

�         Windows XP SP3

�         Windows Server 2003 SP2

�         Windows Vista SP1 or later

�         Windows Server 2008 (not supported on Server Core Role)

�         Windows 7

�         Windows Server 2008 R2 (not supported on Server Core Role)

�         Windows 7 SP1

�         Windows Server 2008 R2 SP1

�         Supported Architectures:

�         x86

�         x64

�         ia64 (some features are not supported on ia64 for example, WPF)

�         Hardware Requirements:

�         Recommended Minimum: Pentium 1 GHz or higher with 512 MB RAM or more

�         Minimum disk space:

�         x86 � 850 MB

�         x64 � 2 GB