The .NET Framework 4.5.1 (Offline Installer) and .NET Framework 4.5.1 Language Pack (Offline Installer) is available for Windows Vista, Windows 7, Windows 8, Windows Server 2008, Windows Server 2008 R2 and Windows Server 2012

Article translations Article translations
Article ID: 2858728 - View products that this article applies to.
Expand all | Collapse all

On This Page

Introduction

The Microsoft .NET Framework 4.5.1 (Offline Installer) is now available for the .NET Framework 4 and the .NET Framework 4.5.

If your computer is not connected to the Internet, you can use the offline installer instead of the web installer to install this update. However, we recommend that you use the web installer to install this update if you are connected to the Internet. The .NET Framework 4.5.1 (Offline Installer) package is larger than the .NET Framework 4.5.1 (Web Installer) package.

The .NET Framework 4.5.1 Language Pack contains localized resources for supported languages. It contains translated error messages and other UI text for languages other than English. If you don't install a language pack, this text is displayed in English. You can install multiple language packs on one computer, each for a different language.

You must download and install the .NET Framework 4.5.1 (Offline Installer) before you install the language packs.

More information

Download information

The following files are available for download from the Microsoft Download Center:
The .NET Framework 4.5.1 (Offline Installer)
Collapse this imageExpand this image
Download
Download the package now.
The .NET Framework 4.5.1 Language Packs (Offline Installer)
Collapse this imageExpand this image
Download
Download the package now.

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
Microsoft scanned this file for viruses. Microsoft used the most current virus-detection software that was available on the date that the file was posted. The file is stored on security-enhanced servers that help prevent any unauthorized changes to the file.

What is new in the .NET Framework 4.5.1?

The .NET Framework 4.5.1 supports the use of C#, Visual Basic, and F# code. Additionally, the .NET Framework 4.5.1 provides the following language and framework improvements:
  • Performance and reliability improvements
  • The ability to suspend and resume operations in the ASP.NET page framework
  • The ability to compact large object heaps on-demand
  • 64-bit Edit and Continue controls
  • The ability to trace and sample activities
  • Improvements that make SQL connections more resilient
  • The ability to manage return values
For more information about these and other features of the .NET Framework 4.5.1, go to the following Microsoft websites:

The .NET Framework Developer Center

The .Net Framework Blog

The .NET Framework 4.5.1 runs side-by-side with the .NET Framework 3.5 Service Pack 1 (SP1) and earlier versions of the .NET Framework. However, the .NET Framework 4.5.1 is 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 options that are supported by this update, go to the "Command-Line options" section on the following MSDN website:

.NET Framework Deployment Guide for Developers

Restart requirement

You may have to restart the computer after you install this update. We recommend that you close all applications that are using the .NET Framework before you install this update.

Status

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

Properties

Article ID: 2858728 - Last Review: November 26, 2013 - Revision: 4.0
Applies to
  • Microsoft .NET Framework 4.5.1, when used with:
    • Windows Vista Service Pack 2
    • Windows 7 Service Pack 1
    • Windows 8
    • Windows Server 2008 Service Pack 2
    • Windows Server 2008 R2 Service Pack 1
    • Windows Server 2012 Standard
Keywords: 
kbfix kbsurveynew kbexpertiseadvanced atdownload KB2858728

Give Feedback

 

Contact us for more help

Contact us for more help
Connect with Answer Desk for expert help.
Get more support from smallbusiness.support.microsoft.com