Article ID: 2872778 - View products that this article applies to.
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Introduction

The Microsoft .NET Framework 4.5.1 Release Candidate (RC) is a highly compatible, in-place update to the Microsoft .NET Framework 4 and the Microsoft .NET Framework 4.5.

More information

Download information

Microsoft .NET Framework 4.5.1 RC for Windows Vista SP2, Windows 7 SP1, Windows Server 2008 SP2 and Windows Server 2008 R2 SP1
The following file is available for download from the Microsoft Download Center:
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Microsoft .NET Framework 4.5.1 RC Language Pack for Windows 7 SP1, Windows Vista SP2, Windows Server 2008 R2 SP1, and Windows Server 2008 SP2
The following file is available for download from the Microsoft Download Center:
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For more information about how to download Microsoft support files, click the following article number to view the article in the Microsoft Knowledge Base:
119591 How to obtain Microsoft support files from online services
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What’s new in the .NET Framework 4.5.1 RC?

The .NET Framework 4.5.1 RC supports the writing of code in C#, Visual Basic, and F# programming languages, and includes these significant language and framework enhancements:
  • Better performance and reliability
  • ASP.NET application suspend and resume
  • On-demand compaction of the large object heap
  • 64-bit Edit and Continue
  • Activity tracing and sampling
  • SQL connection resiliency
  • Managed return values
For more information about these and other features of the .NET Framework 4.5.1, see the .NET Framework Developer Center website and blog post. This version of the .NET Framework runs side-by-side with the Microsoft .NET Framework 3.5 Service Pack 1 (SP1) and earlier versions, but performs an in-place update for the .NET Framework 4 and the .NET Framework 4.5.

Command-line switches for this update

For more information about the various command-line switches that are supported by this update, go to the "Command-Line options" section of the following MSDN website:

.NET Framework Deployment Guide for Developers

Restart requirement

You may have to restart the computer after you install this software if any affected files are being used. We recommend that you close all applications that are using the .NET Framework before you apply this update.

Status

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
Note This is a "FAST PUBLISH" article created directly from within the Microsoft support organization. The information contained herein is provided as-is in response to emerging issues. As a result of the speed in making it available, the materials may include typographical errors and may be revised at any time without notice. See Terms of Use for other considerations.

Properties

Article ID: 2872778 - Last Review: September 10, 2013 - Revision: 1.0
Applies to
  • Microsoft.NET Framework 4.5.1, when used with:
    • Windows Vista Service Pack 2
    • Windows 7 Service Pack 1
    • Windows Server 2008 Service Pack 2
    • Windows Server 2008 R2 Service Pack 1
Keywords: 
kbsurveynew kbexpertiseadvanced kbfix atdownload KB2872778

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