Microsoft_.NET_Framework_4.5_Developer_Preview.exe

Overview

The Microsoft .NET Framework 4.5 Developer Preview is a prerelease version of the .NET Framework, and should not be used in production scenarios.

This software is an in-place update to the .NET Framework 4, and is designed to run side-by-side with the .NET Framework 3.5 and earlier versions. Learn More about how the .NET Framework 4.5 Developer Preview interacts with earlier versions.

The .NET Framework 4.5 Developer Preview includes updates to the common language runtime (CLR) and the .NET Framework class library, innovations in the Visual Basic and C# languages, enhancements in data access and web server scenarios, and improvements in extensibility, performance, reliability, and security.
System requirements

Supported Operating Systems: Windows 7, Windows Server 2008 R2

Windows 7 (x86 and x64)
Windows Server 2008 R2 (x64)
Windows Developer Preview (x86 and x64)
Windows Server Developer Preview (x64)
Supported Architectures:
32-bit (x86)
64-bit (x64)
Minimum Hardware Requirements:
1 GHz or faster processor
512 MB of RAM
850 MB of available hard disk space (x86)
2 GB of available hard disk space (x64)