What is Microsoft.NET Framework. How to install and reinstall NET Framework? Install or update, fix errors Microsoft net framework version 4.0
Microsoft .NET Framework Overview
Microsoft .NET Framework is a CLR-based software platform that creates conditions for the development and installation of computer software. Contains system components and libraries necessary for working with applications, ensure interaction with data located on local disks and online. The platform is adapted for the Windows environment, starting from version 7 integral part OS.
Platform functionality
The Microsoft .NET Framework ensures the functioning of most modern programs and allows you to work in the Windows environment with applications created for other operating systems. It has an extensive base of components and functions to perform various actions, works with any type of data, ensures the versatility of program elements and their suitability for use with any application.
Among the platform's capabilities:
- memory management;
- creating conditions for launching applications;
- adaptation of third-party software for Windows;
- Russian language support;
- ensuring compatibility between programming languages.
Microsoft .NET Framework facilitates the software development process, eliminates technical conflicts when installing and running programs on any hardware operating under Windows control. It is possible to distribute the platform to other operating systems. There are two installation options: using the web or offline installer. In the first case, the necessary components and language packs are downloaded via the Internet, in the second - the pre-downloaded distribution is launched and unpacked, followed by the addition of language packs.
Features of version 4.7
Version of Microsoft .NET Framework 4.7, released in April 2017, is adapted for Windows 10 v1703, it has been improved and new functionality has been added.
Among the changes made:
- improvements in CLR and BCL;
- improved support for multi-core processors;
- background garbage collection;
- attaching a server profiler;
- adding new file types;
- easier debugging;
- simplifying access to data.
In October 2017, an updated version of Microsoft .NET Framework 4.7.1 appeared for Windows versions 10 and Server 2016 from installed packages updates 1709, performance has been improved and interaction with language environments has been improved.
".Net Framework" is a special software platform with which a huge number of applications are written for the Windows operating system. For such programs to work, the .NET Framework environment must be installed on your computer.
On this page you can download the required version of the .NET Framework installer for free. Also, you can learn about the purpose of the .NET Framework, system requirements and read the instructions for installing or fixing errors related to its operation on different versions of Windows.
Introduction. Why do you need .Net Framework
What is the .Net Framework? Microsoft .Net Framework– a distributed software platform that is used to develop modern software. Architecture « .Net":
- Allows developers not to waste time working out the interaction of the created product with the environment in which it will be executed (be it hardware characteristics, compatibility, OS features or other technical aspects of the environment).
- It can work with many programming languages using a set of special algorithms, which gives application creators the opportunity to use almost any known principle of constructing program code for their software.
System requirements for optimal performance of the .Net Framework
Requirements for hardware components for normal operation .Net Framework low enough that the component will work even on the weakest computer. The rest of the information in this chapter is primarily intended for first-time users.
Those more advanced can skip to the chapter where you will learn about. Your computer is required to:
- Processor frequency 1 GHz and above;
- Volume RAM no less 512 MB;
- Minimum amount of hard disk space in size 4.5 GB.
Therefore, for best compatibility with the maximum number of applications, all possible variations of this component should be installed. But that doesn't mean that latest libraries will be fully supported by older operating systems.
Sometimes, in order to install the appropriate version of the .Net Framework, you need to upgrade to new version Windows.
We strongly recommend that users install Windows 10.
Determining the bit depth of the operating system: x32 (x86) or x64
Bit depth of your operating system (if necessary), you can look in "Properties" computer.
Figure 1. Find out the system capacity.This information will be required when installing older versions .Net Framework.
The new libraries are suitable for OS of both bit sizes (x32-x64).
Latest version of .Net Framework available for installation on your OS
Last .Net Framework, which can be installed on all these OS (except Windows XP) manually - this is version 4.7. Before installing a component on your computer, make sure that the version you need is not integrated into the OS default by reading the following information:
- Windows XP. Integrated version – 1.0 SP2;
- Windows Integrated Versions – 2.0 SP2, 3.0 SP2 And 3.5 SP1;
- Windows 8 or 8.1. Integrated versions – 4.5 And 4.5.1 respectively for these OS;
- Windows Integrated Version – 4.6 or 4.6.1 depending on installed updates.
Latest versions of .Net Framework do not contain all those libraries that were previously in older versions of the .NET Framework.
This means that in order to run some old programs or games, you will have to install the old(!) versions of the .NET Framework necessary for their operation.
Also remember: pre-installed libraries cannot be removed regular means the operating system itself.
How to install the correct version of .Net Framework
Let's say you needed an earlier version of a component to run a particular application.
Usually software automatically notifies the user that the required version is not available on the OS .Net Framework, displaying the corresponding error window. An example of such a message is shown in the figure below:
Figure 2. Example of a message about the missing version of the .Net Framework.
In this case, you simply need to download the required version of the component for your OS (observing the bit depth, of course) using a special installer, which comes in two types:
- Online (web) The installer downloads all the necessary files .Net Framework from Microsoft servers and independently unpacks the downloaded data. Requires an Internet connection.
- Autonomous (full) the installer already contains all the libraries that are needed for a full installation .Net Framework without an internet connection.
Download .Net Framework 4.7 (including versions: 4.6.2, 4.6.1, 4.6, 4.5.2 and 4)
Currently (October, 2017) version .Net Framework 4.7 is the last one. Download this component in full relieves from the need to download the following versions:
- .Net Framework 4.6 (4.6.1 And 4.6.2 );
- .Net Framework 4.5 (4.5.1 And 4.5.2 );
- .Net Framework 4.
Version 4.7 supported by the following OS of any bit depth (x32-x64):
- Windows 10 Creators Update (integrated);
- Windows 10 Anniversary Update;
- Windows 8 or 8.1;
- Windows 7;
- Windows Server 2016, 2012 and 2008.
Download .Net Framework 3.5 (including versions: 3.0 and 2.0)
You can read more information and download .Net Framework 3.5 on the Microsoft website or download the library in one file from our website using the links provided.
NET Framework is evolving, and newer versions may lack some components that were previously present in earlier versions.
This happens by various reasons: some components could become outdated, no longer relevant, or they could be replaced by new, more advanced components of the Framework. Some older applications may require exactly those old components that are missing in new versions, which requires installing one of the older versions of the MS .NET Framework. Version 3.5 already includes minor versions of libraries (so there is no need to download them separately):
This component is compatible with any currently used Microsoft operating system, including Windows XP.
Installation .Net Framework 3.5 in most cases, it will allow you to launch and ensure normal operation of any old program or game. However, if you are experiencing problems with this version of the component, please review the information in the next chapter.
Errors during installation or operation of the .Net Framework
Sometimes incorrect installation or update .Net Framework may result in component malfunctions. This chapter provides information on various errors that you may encounter at different stages of using libraries. ".Net".First you need to download the official utility from Microsoft called ".Net Framework Repair Tool
", which is in automatic mode will help solve the problem with the component. You will find instructions for this program below.
.NET Framework Repair Tool will find and fix most crashes
According to the Microsoft website, this utility solves problems when working and installing or updating any version .Net Framework.
Microsoft .Net Framework Repair Tool ( online version). | 1.22 MB The utility is designed to identify the most common problems when working or installing the .NET Framework, as well as automatically fix them.
Unfortunately, "Repair Tool" does not support Russian language. However, all the processes occurring in it are simple and intuitive. The user is required to:
- Press the button periodically "Next";
- Agree with the application of the proposed changes.
If an error is detected, actions to eliminate it will be proposed. After confirmation, you must wait until the utility completes and restart your computer.
Figure 3. Testing process with the Microsoft .Net Framework Repair Tool.
Errors the next time the system starts .Net Framework will be corrected, and you will be able to reinstall the required version of the component (if this process was previously accompanied by failures).
If the problem persists during installation or operation of a component after using the program, please review the detailed information on specific errors described in the following chapters.
Error installing .Net Framework update 0x80070643 on Windows 7
Error 643
work related "Update Center". Occurs mainly in Windows users 7.Attention!
It is recommended that you begin the actions described below only after familiarizing yourself with the program from the chapter:.
If "Repair Tool" did not find a problem, you should restart update center Windows using a ready-made program written specifically for website or using a command algorithm that you can create yourself using the instructions described below.
The executable code is the same in both cases.
The program was created solely for convenience: when using it, you do not have to carry out any manual manipulations. The following will describe the manual method of restarting the system update.
Carefully follow the following instructions:
- Create an empty one text document and copy the following code into it:
attrib -h -r -s %windir%\system32\catroot2
attrib -h -r -s %windir%\system32\catroot2\*.*
net stop wuauserv
net stop CryptSvc
net stop BITS
ren %windir%\system32\catroot2 catroot2.old
ren %windir%\SoftwareDistribution SoftwareDistribution.old
ren "%ALLUSERSPROFILE%\application data\Microsoft\Network\downloader" downloader.old
net Start BITS
net start CryptSvc
net start wuauserv
pause
- Save the file with the extension ".bat" ;
- Run the created program on behalf of administrator.
Figure 4. Save the file in the “.bat” extension.Now all that remains is to restart the computer and re-install .Net Framework.
Error when installing .Net Framework 3.5: 0x800F0906, 0x800F081F, 0x800F0907 on Windows 8 or 8.1
This issue occurs when trying to install .Net Framework 3.5.Before performing the actions described below, it is recommended that you read the chapter: . Errors 0x800F0906, 0x800F081F, 0x800F0907 in most cases appear when installing .NET Framework 3.5, when security updates are installed in the operating system KB2966826 And KB2966828.
This is most likely due to the fact that some Windows updates may not be tested to operate or interact with the .NET Framework 3.5 installer.
MS developers assumed that users would use new, more current versions Framework, and the .NET Framework 3.5 installer itself was created long before these updates, and does not take into account the changes in policies and security mechanisms that they bring.
To use .Net Framework 3.5 (and below) on new OSes, you must:
- Temporarily disable "Windows Update";
- Delete KB2966826 And KB2966828 through standard remedy“Installing and removing programs”;
- Restart your computer and repeat installation .Net Framework.
Selecting the hard drive and folder to extract .NET before installation (the installer can choose the drive, for example drive A:)
The installer of the latest versions of the .NET Framework selects the destination drive and folder at its discretion. This may be a rather non-obvious choice, for example drive A:, or another drive not intended for these tasks.
To get around this problem, just run the installation using command line(see Figure 5): Figure 5. Installation of .NET Framework 4.7.1 with unpacking into a specific folder.
Microsoft .NET Framework Overview
Microsoft .NET Framework is a CLR-based software platform that creates conditions for the development and installation of computer software. Contains system components and libraries necessary to work with applications, ensures interaction with data located on local disks and on the network. The platform is adapted for the Windows environment, starting from version 7 it is an integral part of the OS.
Platform functionality
The Microsoft .NET Framework ensures the functioning of most modern programs and allows you to work in the Windows environment with applications created for other operating systems. It has an extensive base of components and functions to perform various actions, works with any type of data, ensures the versatility of program elements and their suitability for use with any application.
Among the platform's capabilities:
- memory management;
- creating conditions for launching applications;
- adaptation of third-party software for Windows;
- Russian language support;
- ensuring compatibility between programming languages.
The Microsoft .NET Framework facilitates the software development process and eliminates technical conflicts when installing and running programs on any hardware running Windows. It is possible to distribute the platform to other operating systems. There are two installation options: using the web or offline installer. In the first case, the necessary components and language packs are downloaded via the Internet, in the second, the pre-downloaded distribution is launched and unpacked, followed by the addition of language packs.
Features of version 4.7
Version of Microsoft .NET Framework 4.7, released in April 2017, is adapted for Windows 10 v1703, it has been improved and new functionality has been added.
Among the changes made:
- improvements in CLR and BCL;
- improved support for multi-core processors;
- background garbage collection;
- attaching a server profiler;
- adding new file types;
- easier debugging;
- simplifying access to data.
In October 2017, an updated version of the Microsoft .NET Framework 4.7.1 appeared for versions of Windows 10 and Server 2016 with service packs 1709 installed, performance was increased, and interaction with language environments was improved.
Microsoft .NET Framework is a digital platform that allows you to create, launch correctly and use various applications or games, during the creation of which parts of one specific application are written in different ways program codes. This platform is a digital environment in which different codes of a single application are compiled into one transferable code, which in turn is understandable by the Framework itself. Then the moving code is compiled into understandable code for the operating system for which the application was developed. For example for Windows 7/8/10
You can install this platform in various ways.
- Having installed operating system, whose update package already includes this platform.
- Download Net Framework and then install. (Official links on our website)
- Install as additional software when installing the game.
- Install automatically using Windows Update
There are cases: When starting a game or application, a window with approximate content pops up on the screen: “(application name) requires the presence of. NO Framework. Please download and install Net Framework 3.5 or higher." What does startup do? this application impossible without this platform. If you have Microsoft Net Framework 4.7 installed, this does not mean that you do not need older versions. You will need to install both Microsoft Net Framework 4 and previous versions. It is highly recommended to install all existing ones regarding your operating system.
Select and install the versions you need for Windows XP, Vista, 7, 8,10
Microsoft .NET Framework 1.0
Download Microsoft .NET Framework 1.0 for 32/64 bit
Microsoft .NET Framework 1.1
Download Microsoft .NET Framework 1.1 for 32/64 bit
Microsoft .NET Framework 2.0
For 32 bit
Download Microsoft .NET Framework 2.0 for 64 bit
Microsoft .NET Framework 3.0
Download Microsoft .NET Framework 3.0 for 32/64 bit
Microsoft .NET Framework 3.5
Download Microsoft .NET Framework 3.5 for 32/64 bit
Microsoft .NET Framework 4.0
Download Microsoft .NET Framework 4.0 for 32/64 bit
Microsoft .NET Framework 4.5
Download Microsoft .NET Framework 4.5 for 32/64 bit
Microsoft .NET Framework 4.5.1
Download Microsoft .NET Framework 4.5.1 for 32/64 bit
Microsoft .NET Framework 4.5.2
Download Microsoft .NET Framework 4.5.2 for 32/64 bit
Microsoft .NET Framework 4.6
Download Microsoft .NET Framework 4.6 for 32/64 bit
Microsoft .NET Framework 4.6.1
Download Microsoft .NET Framework 4.6.1 for 32/64 bit
Microsoft .NET Framework 4.6.2
Download Microsoft .NET Framework 4.6.2 for 32/64 bit
Microsoft .NET Framework 4.7
Download Microsoft .NET Framework 4.7 for 32/64 bit
Microsoft .NET Framework 4.7.1
Download Microsoft .NET Framework 4.7.1 for 32/64 bit
Version 3.5, which includes earlier ones, and version 4.7.1 (the latest at the moment) must be installed.
We will be glad to hear your feedback, we will also help you install components and correct errors. Write everything in the comments below
Microsoft .NET Framework- This is the so-called software platform. Installation of the NET Framework is required to run programs written on this platform. To make it clearer for you, I will explain it as follows: some video files will not play in Windows if the necessary codecs are not installed for them. The situation is the same here: programs written for the NET Framework will not be able to execute if this component is not installed on the system.
An important point: for an application written for a specific version of the NET Framework to work, this version must be installed.
Microsoft released the first version of the NET Framework back in 2000, and since then several have been released (NET Framework 1.0, 1.1, 2.0, 3.0, 3.5, 4.0, 4.5).
How can you find out which NET versions Framework installed on your computer?
Microsoft .NET Framework 4.5.1
It is an update to versions 4.0 and 4.5, so if you are installing 4.5.1, 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 problems arise 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 remove 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 appears: “Do you want to run the .NET Framework Setup Cleanup Utility?” (though 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 the NET Framework, restart your computer. Then reinstall the versions you need, starting with the smallest one.
