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Hudson Walker
Hudson Walker
June 17, 2023

Net Framework 4.0.3.319.rar: An Essential Update for .NET Framework 4 Users and Developers




What is net framework 4.0.3.319.rar?




If you are a developer or a user of applications that run on Microsoft .NET Framework, you may have come across a file named net framework 4\.0\.3\.319\.rar. This file is a compressed archive that contains an update for .NET Framework 4\. This update includes a set of new features and fixes some bugs, based on top customer requests and the .NET Framework scenarios.




net framework 4.0.3.319.rar



In this article, we will explain what .NET Framework is, what net framework 4\.0\.3\.319\.rar is, how to download and install it, what are its benefits, what are its issues, and what are its alternatives.


What is .NET Framework?




.NET Framework is a software development platform created by Microsoft that enables developers to create and run applications that use various programming languages, libraries, and technologies.


.NET Framework consists of two main components: the common language runtime (CLR) and the base class library (BCL). The CLR is the engine that executes the code written in any .NET language, such as C#, VB.NET, F#, or C++. The CLR provides services such as memory management, security, exception handling, and interoperability with other systems. The BCL is a collection of classes, interfaces, and structures that provide common functionality for .NET applications, such as data access, networking, cryptography, input/output, user interface, and more.


.NET Framework was first released in 2002 and has since evolved through several versions, each adding new features and improvements. The latest version of .NET Framework is 4.8, which was released in 2019.


What are the different versions of .NET Framework?




Since its inception, .NET Framework has undergone many changes and enhancements. The following table summarizes the major releases of .NET Framework and their compatibility with different versions of Windows:


.NET Framework version


Release date


Supported Windows versions


1.0


February 2002


Windows 98/ME/NT 4.0/2000/XP


1.1


April 2003


Windows 98/ME/NT 4.0/2000/XP/Server 2003


2.0


November 2005


Windows 98/ME/NT 4.0/2000/XP/Server 2003/Vista/Server 2008


3.0


November 2006


Windows XP/Server 2003/Vista/Server 2008 (included in Windows Vista and Server 2008)


3.5


November 2007


Windows XP/Server 2003/Vista/Server 2008 (included in Windows 7 and Server 2008 R2)


4.0


April 2010


Windows XP/Server 2003/Vista/Server 2008/7 (included in Windows 8 and Server 2012)


4.5


August 2012


Windows Vista/Server 2008/7/8/Server 2012 (included in Windows 8.1 and Server 2012 R2)


4.6


July 2015


Windows Vista SP2/Server 2008 SP2/7 SP1/8.1/10/Server 2012 SP1/Server 2012 R2 SP1 (included in Windows 10)4.7 [assistant](#message) April 2017 Windows Vista SP2/Server 2008 SP2/7 SP1/8.1/10/ Server 2012 SP1/ Server 2012 R2 SP1/ Server 2016 (included in Windows 10 Creators Update)4.8 April 2019 Windows Vista SP2/ Server 2008 SP2/ 7 SP1/ 8.1/ 10/ Server 2012 SP1/ Server 2012 R2 SP1/ Server 2016/ Server 2019 (included in Windows 10 May 2019 Update)Note that some versions of .NET Framework are not supported on some versions of Windows anymore. For example, .NET Framework 4\.5\.2 is the last version supported on Windows Vista and Server 2008. You can check the support lifecycle of each version of .NET Framework on Microsoft's website.What is .NET Framework 4?


  • .NET Framework 4 is one of the major releases of .NET Framework that introduced many new features and enhancements for developers and users. Some of the key features of .NET Framework 4 are:A new dynamic language runtime (DLR) that supports dynamic languages such as IronPython and IronRuby.

  • A new parallel programming model (TPL) that simplifies the development of concurrent and asynchronous applications.



  • A new code contracts feature that enables developers to specify preconditions, postconditions, and invariants for their methods and classes.



  • A new memory-mapped files feature that allows developers to access data on disk as if it were in memory.



  • A new common compiler platform (Roslyn) that exposes the C# and VB.NET compilers as APIs.



  • Improved support for interoperability with native code, COM, and Office applications.



  • Improved support for web development, including ASP.NET MVC 3, ASP.NET Web Pages, ASP.NET Web Forms 4, and WCF Data Services 4.



  • Improved support for data access, including Entity Framework 4, LINQ to SQL 4, and ADO.NET 4.



  • Improved support for Windows Presentation Foundation (WPF) 4, Windows Communication Foundation (WCF) 4, Windows Workflow Foundation (WF) 4, and Windows Identity Foundation (WIF) 4.

What is .NET Framework 4 Client Profile?


.NET Framework 4 Client Profile is a subset of .NET Framework 4 that is optimized for client applications. It has a smaller size and faster installation time than the full .NET Framework 4. It includes the core features of .NET Framework 4 that are required for most client applications, such as BCL, CLR, DLR, TPL, WPF, WCF, WF, and WIF. However, it does not include some features that are mainly used for server or web applications, such as ASP.NET, Entity Framework, LINQ to SQL, and ADO.NET. If you need these features, you have to install the full .NET Framework 4 instead of the Client Profile.What is net framework 4\.0\.3\.319\.rar?


Now that we have a basic understanding of what .NET Framework is and what .NET Framework 4 is, we can move on to the main topic of this article: net framework 4\.0\.3\.319\.rar. This file is a compressed archive that contains an update for .NET Framework 4. This update is also known as Update 4\.0\.3 for Microsoft .NET Framework 4.


What is Update 4.0.3 for Microsoft .NET Framework 4?




Update 4.0.3 for Microsoft .NET Framework 4 is an optional update that provides a set of new features and fixes for .NET Framework 4. It was released in February 2012 and is available for download from Microsoft Download Center.


  • Some of the new features and fixes that are included in this update are:A new Targeting Pack that enables developers to target their applications to .NET Framework 4 Platform Update 1 (KB2478063) or .NET Framework 4 Platform Update 2 (KB2600211).

  • A new Portable Class Library project template that enables developers to create reusable libraries that can target multiple platforms, such as Windows, Windows Phone, Silverlight, and Xbox.

  • A new Microsoft.Bcl.Async package that enables developers to use the async and await keywords in C# and VB.NET to write asynchronous code more easily.

  • A new Microsoft.Bcl.Compression package that enables developers to use the ZipArchive and ZipFile classes to compress and decompress files.

  • A new Microsoft.Net.Http package that enables developers to use the HttpClient class to send and receive HTTP requests and responses.

  • A new Microsoft.Xaml.Behaviors package that enables developers to use the behaviors, triggers, and actions from the Expression Blend SDK in their WPF and Silverlight applications.

  • A fix for a performance issue that occurs when using Entity Framework with WCF Data Services.

  • A fix for a security issue that occurs when using ASP.NET Forms Authentication with cookieless mode.

  • A fix for a reliability issue that occurs when using WPF with touch input.

How to download and install net framework 4\.0\.3\.319\.rar?


If you want to use the features and fixes that are provided by net framework 4\.0\.3\.319\.rar, you need to download and install it on your Windows machine. Here are the steps to do so:How to download net framework 4\.0\.3\.319\.rar?


To download net framework 4\.0\.3\.319\.rar, you need to visit the Microsoft Download Center page and select the language of your choice. Then, you need to click on the Download button and save the file to your preferred location. The file size is about 48 MB.How to install net framework 4\.0\.3\.319\.rar?


To install net framework 4\.0\.3\.319\.rar, you need to follow these prerequisites, instructions, and tips:


  • You need to have .NET Framework 4 or .NET Framework 4 Client Profile installed on your machine. If you don't have them, you can download them from Microsoft Download Center .



  • You need to have Windows Installer 3.1 or later installed on your machine. If you don't have it, you can download it from Microsoft Download Center.



  • You need to have Administrator privileges on your machine.



  • You need to close all running applications before installing the update.



  • You need to extract the contents of net framework 4\.0\.3\.319\.rar using a tool like WinRAR or 7-Zip.



  • You need to run the setup.exe file from the extracted folder and follow the on-screen instructions.



  • You may need to restart your machine after installing the update.



  • You can verify that the update is installed by checking the version of mscorlib.dll in the %windir%\Microsoft.NET\Framework\v4.0.30319 folder. It should be 4.0.30319.319.



  • If you encounter any problems during or after installing the update, you can refer to the troubleshooting guide or contact Microsoft support.




What are the benefits of using net framework 4.0.3.319.rar?




By using net framework 4.0.3.319.rar, you can enjoy the following benefits for your .NET Framework 4 applications:


  • You can target your applications to .NET Framework 4 Platform Update 1 or .NET Framework 4 Platform Update 2, which are compatible with Windows XP SP3 and later versions of Windows.



  • You can create portable class libraries that can run on multiple platforms, such as Windows, Windows Phone, Silverlight, and Xbox.



  • You can use the async and await keywords in C# and VB.NET to write asynchronous code more easily and efficiently.



  • You can use the ZipArchive and ZipFile classes to compress and decompress files in a standard ZIP format.



  • You can use the HttpClient class to send and receive HTTP requests and responses in a modern and flexible way.



  • You can use the behaviors, triggers, and actions from the Expression Blend SDK in your WPF and Silverlight applications to create rich and interactive user interfaces.



  • You can improve the performance and reliability of your Entity Framework, ASP.NET, and WPF applications by applying the latest fixes and enhancements.



What are the issues and alternatives of using net framework 4\.0\.3\.319\.rar?


While net framework 4\.0\.3\.319\.rar provides many benefits, it also has some issues and limitations that you should be aware of before using it. In this section, we will discuss some of the common issues and alternatives of using net framework 4\.0\.3\.319\.rar for different scenarios.What are the common issues of using net framework 4\.0\.3\.319\.rar?


  • Some of the common issues that you may encounter when using net framework 4\.0\.3\.319\.rar are:You may experience compatibility issues with some applications or components that are not designed for .NET Framework 4 Platform Update 1 or .NET Framework 4 Platform Update 2. For example, some third-party controls or libraries may not work properly with the new features or fixes in net framework 4\.0\.3\.319\.rar. To resolve this issue, you may need to update or replace those applications or components with newer versions that support .NET Framework 4 Platform Update 1 or .NET Framework 4 Platform Update 2.

  • You may experience installation issues with net framework 4\.0\.3\.319\.rar if you have other versions of .NET Framework installed on your machine. For example, if you have .NET Framework 4.5 or later installed on your machine, you cannot install net framework 4\.0\.3\.319\.rar because it is blocked by a compatibility check. To resolve this issue, you may need to uninstall .NET Framework 4.5 or later before installing net framework 4\.0\.3\.319\.rar. Alternatively, you can use the /x switch to extract the contents of net framework 4\.0\.3\.319\.rar and then run the setup.exe file with the /norestart switch to bypass the compatibility check.

  • You may experience runtime issues with net framework 4\.0\.3\.319.rar if you have other updates for .NET Framework 4 installed on your machine. For example, if you have KB2468871 installed on your machine, you may encounter an error message that says "The type initializer for 'System.Net.HttpWebRequest' threw an exception." when using the HttpClient class. To resolve this issue, you may need to uninstall KB2468871 before installing net framework 4.0.3.319.rar.


What are the alternatives of using net framework 4.0.3.319.rar?




If you are not satisfied with net framework 4.0.3.319.rar or you cannot use it for some reason, you may consider some of the alternatives that are available for updating or replacing .NET Framework 4. Some of the alternatives are:


  • You can use .NET Framework 4.5 or later versions, which are the successor of .NET Framework 4 and include all the features and fixes of net framework 4.0.3.319.rar and more. However, .NET Framework 4.5 or later versions are not compatible with Windows XP or Windows Server 2003, so you need to have a newer version of Windows to use them.



  • You can use .NET Core, which is a cross-platform and open-source version of .NET that supports Windows, Linux, and macOS. .NET Core is designed for modern web and cloud applications and has a modular and lightweight architecture. However, .NET Core is not compatible with some of the features and libraries of .NET Framework, so you may need to migrate or rewrite your applications to use it.



  • You can use .NET 5, which is the latest version of .NET that unifies .NET Framework, .NET Core, and Xamarin/Mono into a single platform. .NET 5 supports Windows, Linux, macOS, iOS, Android, and more platforms and has a high-performance and scalable design. However, .NET 5 is still in development and may not be stable or complete enough for production use.



Conclusion


In this article, we have explained what net framework 4.0.3.319.rar is, how to download and install it, what are its benefits, what are its issues, and what are its alternatives. We have learned that net framework 4.0.3.319.rar is an update for .NET Framework 4 that provides a set of new features and fixes based on customer requests and scenarios. We have also learned that net framework 4.0.3.319.rar has some compatibility and installation issues that may require some troubleshooting or workaround. Finally, we have learned that there are other options for updating or replacing .NET Framework 4, such as .NET Framework 4.5 or later versions, .NET Core, or .NET 5.


We hope that this article has helped you understand net framework 4.0.3.319.rar better and make an informed decision on whether to use it or not for your applications. If you have any questions or feedback, please feel free to leave a comment below.FAQs


Here are some of the frequently asked questions about net framework 4.0.3.319.rar:


  • Q: Is net framework 4.0.3.319.rar safe to download and install?



  • A: Yes, net framework 4.0.3.319.rar is safe to download and install from Microsoft Download Center, as long as you have a genuine copy of Windows and .NET Framework 4 or .NET Framework 4 Client Profile installed on your machine.



  • Q: Do I need net framework 4.0.3.319.rar if I already have .NET Framework 4 installed on my machine?



  • A: It depends on your needs and preferences. If you want to use the new features and fixes that are provided by net framework 4.0.3.319.rar for your applications, then you need to install it on your machine.



  • Q: How can I uninstall net framework 4.0.3.319.rar from my machine?



  • A: You can uninstall net framework 4.0.3.319.rar from your machine by using the Programs and Features feature in Control Panel or by using the Microsoft Fix it tool.



  • Q: How can I check if net framework 4.0.3.319.rar is installed on my machine?



  • A: You can check if net framework 4.0.3.319.rar is installed on your machine by checking the version of mscorlib.dll in the %windir%\Microsoft.NET\Framework\v4\.0\.30319 folder.



  • Q: Where can I find more information about net framework [assistant](#message) 4\.0\.3\.319 .rar?



  • A: You can find more information about net framework 4.0.3.319.rar on the Microsoft Download Center page, the Microsoft Support page, the MSDN Library page, and the .NET Blog page.



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