What is Microsoft.NET Framework. How to install and reinstall NET Framework? What is Microsoft's .net framework and why is it needed

Microsoft. NET Framework is a software environment that supports the creation and execution of other desktop and web applications on OS Windows starting from its 98 assembly.

The main focus of this platform is the compatibility of various applications written in different programming languages.

Downloading and updating the Microsoft .NET Framework is recommended for those Windows users who experience errors during the installation of any programs or games.

Platform Features:

• allows you to achieve compatibility of services written in different languages ​​and in different environments;
• independently take care of basic security, memory management and the list of exceptions in the process of working with programs;
• determines and loads only those components that are applicable and necessary for a particular system;
• does not require any settings from the computer user.

The purpose of creating the Microsoft .NET Framework was to give developers of various software the maximum freedom of action for their creativity.

Microsoft .NET Framework allows most programs to run on modern Windows operating systems. Therefore, its installation will be necessary for all users. Microsoft starting from operating system Windows 7 has included this tool in the distribution and installs it automatically during installation.

Download NET Framework 3..

Do not care about the language in which a particular utility is executed, its architecture, system bitness or assembly - it was decided to entrust the mission of compatibility of applications of various types to this software environment.

The principle of performing the task in stages:

1. Starting a service or process.
2. Converting the language used by the compiler into a single bytecode.
3. Execution or translation of code for a specific target process or service.

You need to understand that the latest latest version of the Microsoft .NET Framework does not replace the previous one in all cases. It is also important that new builds of operating systems of the Windows family do not support older versions of this tool.

Microsoft NET Framework update to the latest version is recommended for all users of Windows 7, 8 and 10 operating systems of any bitness.

So, if 4.0 is installed, but there is no 3.5, and the program needs exactly the previous one, then it will not start working without the right one. At the same time, 2.0 and 3.0 are already included in 3.5, so sometimes it's better to install it. And XP from Microsoft only supports the software platform up to 4.0. Therefore, when installing, for example, a game that requires a new version of the Microsoft .NET Framework, you will have to reinstall the entire OS or look for another alternative to the game.

It is worth noting that Microsoft does not recommend that users install multilingual versions of this software environment on their PCs. In such cases, conflicts and incorrect operation of utilities are possible. If necessary, it is better to remove the already installed one and install a new one.

You can download NET Framework 4.5 for Windows 7 from the official link below from the developer's website.

The .NET platform, developed by Microsoft, is an integral part of most games and programs that run on Windows. In the user's understanding, .Net Framework 4.5 and 4.0 are the basis for running programs in the development of which this platform was used. It has become the standard for developing web applications, so if you do not have it, there is a high probability that you will encounter them incorrectly. In addition, the lack of files of the required version of the .NET Framework may cause the game to not run.

Starting with Windows 7, this platform is bundled with the OS distribution, however, a separate installation may be required if the computer does not have the required version, or the .NET Framework has failed.

Program versions

The most common and required today are .NET Framework 4.0 and .NET Framework 4.5. The first is supplied in the base OS Windows Vista and Windows 7, the second - along with Windows 8, however, no matter what system you have, it is better to download and install both versions in order to avoid problems with running games and programs.

How can I find out which versions of the .NET Framework are installed on my computer?

This can be done in two ways:

1. Download and run ASoft .NET Version Detector from the official website of the developer.

1. Look in the system registry. For this:
   • start the registry editor via Start - Run - regedit;
   • open section HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\NET Framework Setup\NDP;
   • branch names correspond to installed versions.

.NET Framework 4.5

This version comes with Microsoft visual studio 2012. To install it separately, just download the .NET Framework 4.5 distribution kit for free from the official website and follow the instructions of the installer.

NET Framework 4.5 is generally not available by default on Windows 7 and must be downloaded manually. For this:

• Download the .NET Framework 4.5 from the official Microsoft website

• Follow the web downloader and installer instructions.

The installation process is extremely simple, but it is important to remember that earlier versions of Windows (XP and below) do not support the .NET Framework 4.5.

.NET Framework 4.0

The previous version of the platform, which is automatically shipped with the distribution of Windows 7. Despite the upgrade to version 4.5, it is still relevant. Most applications work seamlessly with .NET Framework 4.5, but some applications may still require an older version.

Also, you will need version 4.0 if your OS does not support version 4.5.

The installation process is just as simple:

• Download the web installer from the official Microsoft website

• Open the executable and follow the instructions.

Remember that after installing any version of this component, you must reboot for the changes in the system to take effect.

Found a typo? Select the text and press Ctrl + Enter

Microsoft .NET Framework is the so-called software platform. The installation of the NET Framework is required to run programs written on this platform. To make it clearer to you, I will explain as follows: some video files will not play on Windows if they do not have the necessary codecs installed. The situation is the same here: programs written under the NET Framework will not be able to run if this component is not installed on the system.

An important point: for the operation of an application written for a specific version of the NET Framework, this version must be installed.

Microsoft released the first version of the NET Framework back in 2000, and since then there have been several (NET Framework 1.0, 1.1, 2.0, 3.0, 3.5, 4.0, 4.5).

So how do you know which versions of the NET Framework are installed on your computer?

Microsoft .NET Framework 4.5.1
It is an update of versions 4.0 and 4.5, so if 4.5.1 is installed, then these versions do not need to be installed. Windows XP is not supported by NET Framework 4.5.

How to reinstall Microsoft .NET Framework?

Sometimes there are problems in the system, one way or another related to the NET Framework. For example, errors appear when starting some programs or when installing (updating) the Microsoft .NET Framework itself. In this case, the most reliable solution to the problems is to remove the platform and reinstall it.

To correctly uninstall NET Framework from your computer, it is best to use a program specially created for this .NET Framework Cleanup Tool.

Download it, then unzip the archive and run the file cleanup_tool.exe.

A message will appear: “Do you want to run the .NET Framework Setup Cleanup Utility?” (although in English) - click "Yes". Then accept the terms of the license agreement (“Yes” button).
In the program window, select “.NET Framework - All Versions” from the list and click the “Cleanup Now” button:

After uninstalling NET Framework, restart your computer. Then reinstall the desired versions, starting with the smallest.

Description:
.NET Framework is a software platform released by Microsoft. The basis of the platform is the Common Language Runtime (CLR) execution environment, which is capable of executing both regular programs and server web applications. The .NET Framework supports the creation of programs written in different programming languages. The platform is necessary for the installation and correct operation of many programs, therefore it is necessary for users.

Additional Information:
Version 1.0 is practically not used now, so it is recommended to install it only when necessary, when working with programs that require it (Visual Studio 2002, Sound Forge of some versions, etc.). Version 1.1 does not include, require, or replace version 1.0 during installation. It is used more often, but it is also recommended to install it if necessary, only for those programs that are rigidly tied to it. This is because the .NET Framework 2.0 package provides backward compatibility with previous versions, and most programs written under 1.0 and 1.1 work without problems in the 2.0 environment (as well as programs written under 1.0 can run under version 1.1). To avoid conflicts, it is not recommended to install versions 1.0 and 1.1 at the same time (some entries in the registry are common to them). Versions 1.1 and 1.1 SP1 are included in the Windows Server 2003 and Windows Server 2003 SP1 / R2SP1 / SP2 / R2SP2 operating systems, respectively. Version 1.1 SP1 is also distributed on disks with Windows XP SP2 and SP3 operating systems (as a separate distribution kit).
Supported operating systems: Windows 2000, Windows Server 2003 Service Pack 1 for Itanium-based Systems, Windows Server 2003 x64 editions, Windows Server 2008 Datacenter, Windows Server 2008 Enterprise, Windows Server 2008 for Itanium-based Systems, Windows Server 2008 Standard, Windows Vista Business, Windows Vista Enterprise, Windows Vista Home Basic, Windows Vista Home Premium, Windows Vista Starter, Windows Vista Ultimate, Windows XP, Windows XP Professional x64 Edition

Version 2.0 SP2 includes versions 2.0 and 2.0 SP1 and replaces them during installation. latest version that supports Windows 2000. To install this and previous versions on this operating system, you may need to install update KB835732. This version is included with Windows Vista SP2, Windows Server 2008 SP2/R2 and Windows 7 operating systems.
Supported operating systems: Windows 2000 Service Pack 4, Windows Server 2003, Windows XP Service Pack 2

Version 3.0 SP2 does not include version 2.0 SP2, but requires it to be installed. The unofficial distribution downloaded from the link includes both of these versions for x86 and x64 systems. The Russian language pack for version 3.0 SP2 is not included in the distribution kit and is not distributed separately. When installing on a clean system, the Microsoft Core XML Services 6.0 aka MSXML 6.0 Parser component (included in the distribution) may be required. This version is included with Windows Vista SP2, Windows Server 2008 SP2/R2 and Windows 7 operating systems.
Supported operating systems: Windows Server 2003; Windows XP

Version 3.5 SP1 includes versions 2.0 SP2 and 3.0 SP2. At the beginning of the installation, it tries to connect to the Internet to download the language pack. If you already have this package, the installation should be done while disconnected from the network. After several unsuccessful connection attempts, the installation will continue as normal. This version is included with the Windows 7 and Windows Server 2008 R2 operating systems.
Supported operating systems: Windows Server 2003; Windows Server 2008; Windows Vista; Windows XP

Version 4 does not include previous versions (1.0, 1.1, 2.0, 3.0, 3.5), does not require them during installation, and does not replace them. The Client Profile is designed for users to run applications that use the features of the NET Framework 4 Full contains additional features not included in the Client Profile, intended for application developers.
Supported operating systems: 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 Service Pack 3

Version 4.5 is an in-place upgrade of the .NET Framework 4 that differs a high degree compatibility. Version 4.5 replaces version 4.0 and does not include previous versions (1.0, 1.1, 2.0, 3.0, 3.5), is included with OS Windows 8. Removing version 4.5 also removes earlier versions 4.0. If you want to revert to version 4.0, you must reinstall version 4.0 with all updates.
Supported operating systems: Windows 7 Service Pack 1; Windows Server 2008 R2 SP1; Windows Server 2008 Service Pack 2; Windows Vista Service Pack 2

The Microsoft .NET Framework 4.5.2 is an in-place upgrade of the Microsoft .NET Framework 4 and Microsoft .NET Framework 4.5 that is highly compatible. This package can be used on Windows Vista SP2, Windows 7 SP1, Windows 8, Windows Server 2008 SP2, and Windows Server 2008 R2 SP1

The Microsoft .NET Framework 4.6 is a highly compatible in-place replacement for Microsoft .NET Framework 4, Microsoft .NET Framework 4.5, Microsoft .NET Framework 4.5.1, and Microsoft .NET Framework 4.5.2. This package can be used for Windows 7 Service Pack 1; Windows 8; Windows 8.1; Windows Server 2008 R2 SP1; Windows Server 2008 Service Pack 2; Windows Server 2012; Windows Server 2012 R2; Windows Vista Service Pack 2

Development environments for .NET applications:

Microsoft Visual Studio (C#, Visual Basic .NET, Managed C++)
SharpDevelop
MonoDevelop
Eclipse
Borland Developer Studio (Delphi for .NET, C#)
PascalABC.NET etc.

NET Framework Setup Verification Tool is a utility for checking the correct installation of the .NET Framework version dated June 24, 2014 (does not support NET Framework 4.5.3).

NET Framework Cleanup Tool - a utility for removing the .NET Framework version dated June 24, 2014 (does not support NET Framework 4.5.3). (just in case uninstalling via "Add/Remove Programs" doesn't work).

The Microsoft .NET Framework Repair Tool is designed to fix problems installing or updating Microsoft. NET framework. This tool attempts to resolve problems by applying known fixes, or by restoring already installed versions. The program supports .NET Framework 4.5.1, 4.5, 4, 3.5 SP1 (including 3.0 SP2 and 2.0 SP2).

Features of RePack "a:
Type: install.
Languages: English.
Cut: nothing.
Integrated: .NET Framework Setup Verification Tool , .NET Framework Cleanup Tool , .NET Framework Repair Tool

Keys command line:
Silent installation of NET Framework 1.1 - 3.5: /S /A
Silent installation of NET Framework 4.0: /S /B
Silent installation of NET Framework 4.5: /S /C
Silent installation of NET Framework 4.5.1: /S /D
Silent installation of NET Framework 4.5.2: /S /E
Silent installation of NET Framework 4.5.6: /S /F

Note!!! Upon completion of the installation, you will be prompted to change the browser home page. Don't forget to uncheck the box.

The Microsoft .net framework is an integrated, consistent, and comprehensive programming model integrated into Windows OS. It is used to create high quality software with an excellent interface, and is distinguished by the security and transparency of network communications.

The core of the platform is a multilingual programming environment called the Common Language Runtime (CLR). There is an opinion that the framework was developed as a response to the then popular Java platform from Sun.

Why install it?

When one of the applications or a game during installation asks for the installation of the microsoft .net framework, not many people agree, not understanding why this is necessary. Some of the users do not install the package that comes with the package because they already have one of the frameworks installed.

However, both of them are wrong. Be sure to install exactly the version (v4.0, 2.0, 3.5, 4.5) of the microsoft .net framework that this or that application requires. Since it will only work stably on the platform on which it was developed, even if you have the latest version of the software package installed.

This relationship of applications with the platform is explained very simply. This is done so that the developer is not tied to the operating system and the bitness of the user's processor. For example, if a program created on a v4.0, 2.0, 3.5, 4.5 platform was run on a PC, support (or implementation) in the form of software microsoft .net framework v4.0, 2.0, 3.5, 4.5 must be installed .

Important Ingredients

You need to know that the microsoft .net framework consists of two parts:

• performer environment;
• linked library.

The main component can be called the Common Language Runtime (CLR). It can execute the software part of ordinary applications or server ones, being the execution environment.

The second half is needed no less. The Framework Class Library (FCL) is a class library that contains enough elements to deal with:

• databases;
• networks;
• interfaces;
• files;
• data input and output.

All this allows the developer to use ready-made classes to create programs, bypassing the low-level part.

Platform support installation

The microsoft .net framework installer is added to OS windows by default. Version v4.0, 2.0, 3.5, 4.5 of the platform depends on the operating system. But almost any of them can be installed as needed on your own, if your computer meets the requirements.

.Net platform requirements

As is the case with any application, the .Net platform also has its own requirements for normal program support. How newer version microsoft.net (v4.0, 2.0, 3.5, 4.5), the more PC specifications it requires.

However, applications developed on this platform are more sensitive to performance. That is, if you are using an old computer, you will not install programs for windows 8 on it, which means that you do not need platform version 4.5.

To install microsoft .net framework of any version (v4.0, 2.0, 3.5, 4.5) you will need:

• operating system of the Windows family, starting with XP sp3 or server 2003 Sp2;
• computer with a processor from 1 GHz;
• at least 512 MB of RAM;
• any version of the processor architecture, starting from x86.

Software installation process

It is necessary to take into account this fact: for installation, you will need two programs, usually built into the operating system. If you are using XP without updates, then you need to download them from the official Microsoft website. Minimum versions you will need:

• Browser version 5.

You can find out which version you have installed by viewing all the components. But before you start the installation, it is advisable to update all system software. In order to do this, fulfill the following conditions:

1. Open control panel;
2. Find "Windows Update";
3. Check for important updates and install them.

You can download any version (v4.0, 2.0, 3.5, 4.5) of microsoft .net framework on the official website of Microsoft.

Some of the applications themselves offer the installation of the version (v4.0, 2.0, 3.5, 4.5) that they need. Adding one component may include several more, depending on the needs of the software, as well as the platform itself (for example, 3.0 and 2.0 are installed along with platform 3.5).

The installation itself is very simple and intuitive. If the installation of the component failed, or the system gives an error message, you need to disable or remove all versions (v4.0, 2.0, 3.5, 4.5) of microsoft.net

Removing and disabling the Framework

Why remove the framework? If you have a problem after updating one of the windows components, you can follow these steps:

1. Try to disable the last installed item;
2. Remove it by standard means;
3. Use the special net framework cleanup tool.

Restoring work using standard Windows tools

To disable a component, go to the "Control Panel", "Turn components on or off". Find the version (v4.0, 2.0, 3.5, 4.5) that was installed last and uncheck (deactivate), then click the "OK" button.

If the problem arose not during installation, but when starting windows, then most likely there was a failure in the system. If the error is critical and does not allow you to boot, then you need to solve the problem in safe mode. In order to get rid of failures, uninstall the framework programs through the standard "Add or Remove Programs".

When uninstalling, start with the maximum installed version and end with the minimum. That is, uninstall v4.0 - 3.5 - 3.0 - 2.0 - 1.1 in turn. After that, you need to download the versions you need from the official site.

Using additional software

Due to the large number of versions, failures are quite diverse. Regular windows tools do not always help to completely remove software, leaving unnecessary registry entries, settings files and system libraries.

This can cause even more serious problems later on. Therefore, a special removal program was created - net framework cleanup tool.

The utility is very simple. After running it, you need to click the "Cleanup Now" button. The net framework cleanup tool works in such a way that it completely removes all traces of the component's action, including:

• software;
• related updates;
• registry entries;
• settings files;
• system libraries.

Thanks to this program, you can remove unnecessary old components without any problems and consequences, as well as get rid of operating system errors in case of incorrect installation or component failure.