Microsoft .NET Framework Is the so-called software platform. NET Framework installation is required to run programs written on that platform. To make it clearer for you, I will explain 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 under the NET Framework cannot be executed 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, the installation of this particular version is required.
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).
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 to 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 do I reinstall Microsoft .NET Framework?
Sometimes the system has problems, 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 uninstall NET Framework correctly from your computer, it is best to use a specially created program for this .NET Framework Cleanup Tool.
Download it, then unpack the archive and run the file cleanup_tool.exe.
A message appears: "Are you running 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 the “.NET Framework - All Versions” item in the list and click the “Cleanup Now” button: 
After you uninstall NET Framework, restart your computer. Then reinstall the versions you want, starting with the smallest one.
Microsoft .NET Framework is the so-called software platform. NET Framework installation is required to run programs written on that platform. To make it clearer for you, I will explain 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 under the NET Framework cannot be executed 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, the installation of this particular version is required.
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).
How do you know which versions of the NET Framework are installed on your computer?
The easiest way is to download and run the small ASoft .NET Version Detector program.
After launching in the program window, you will see three multi-colored rectangles, which show all existing versions of the NET Framework. The versions installed on your computer are highlighted in white, and those that are not installed are highlighted in gray: If you click on the green arrow on the left opposite the required version, you will be taken to the Microsoft website, where you can download this version of the NET Framework.
You don't need to click on the purple arrow - this is a link to the .NET Developer Toolkit.
If you click on the third from the left edge of the icon (in the form of the logo "Microsoft NET"), then a folder on your computer will open, in which the NET Framework is installed.
Where to download and how to install Microsoft .NET Framework?
Different versions of the windows operating system already have different versions of the NET Framework built in. For example, Windows 7 includes version 3.5 SP1. In turn, this version includes NET Framework 2.0 with SP1 and SP2 and NET Framework 3.0 with SP1 and SP2.
Windows 8 includes NET Framework 4.5.
Installing Microsoft .NET Framework is extremely simple and does not require any specific settings: just download the required package and start its installation. Below are the links where you can download the required version of the NET Framework:
Microsoft .NET Framework 1.0 Version 1.0 is almost never used, and installation is rarely required.
Microsoft .NET Framework 1.1 Version 1.1 is rarely used, install only when necessary.
Microsoft .NET Framework 3.5 Service Pack 1 The 3.5 SP1 installer also includes versions 2.0 SP2 and 3.0 SP2.
Microsoft .NET Framework 4.0
Microsoft .NET Framework 4.5.1 is an update to versions 4.0 and 4.5, so if you install 4.5.1, then you do not need to install these versions. windows XP is not supported by NET Framework 4.5.
How do I reinstall Microsoft .NET Framework?
Sometimes the system has problems, 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 the specially created .NET Framework Cleanup Tool.
Download it here, then unpack the archive and run cleanup_tool.exe.
A message appears: "Are you running 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 the “.NET Framework - All Versions” item in the list and click the “Cleanup Now” button: 
After you uninstall NET Framework, restart your computer. Then reinstall the versions you want, starting with the smallest one.
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Where to download and how to install .NET Framework 4.5 and 4.0
The .NET platform, developed by Microsoft, is an integral part of most games and programs that run on the windows operating system. In the user's understanding, .Net Framework 4.5 and 4.0 represent the basis for launching programs in the development of which this platform was used. It has become the standard for developing web applications, so if it is not available, chances are high that you will encounter them incorrectly. In addition, the lack of files for the correct version of the .NET Framework can cause the games to fail to run.
Starting with windows 7, this platform is bundled with the OS distribution, however, a separate installation may be required if the required version is missing on the computer, or the .NET Framework has crashed.
Program versions
The most common and required ones today are .NET Framework 4.0 and .NET Framework 4.5. The first comes in the basic configuration of windows Vista and windows 7, the second - along with windows 8, however, regardless of which system you have, it is better to download and install both versions in order to avoid problems with running games and programs.
How do I know which versions of the .NET Framework are installed on my computer?
This can be done in two ways:
- Look in the system registry. For this:
- start the registry editor via Start - Run - regedit;
- open the HKEY_LOCAL_MACHINE \ SOFTWARE \ Microsoft \ NET Framework Setup \ NDP section;
- the branch names correspond to the installed versions.
NET Framework 4.5
This version comes with the Microsoft Visual Studio 2012 package. To install it separately, you just need to download the .NET Framework 4.5 distribution kit from the official website for free and follow the instructions of the installer.
NET Framework 4.5 is usually not present by default on windows 7 and must be downloaded manually. For this:
- Download .NET Framework 4.5 from Microsoft Official Site
- Follow the instructions of the web bootloader and installer.
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 supplied with the windows 7 OS distribution kit. Despite the update to version 4.5, it is still up-to-date. Most applications work seamlessly with the .NET Framework 4.5, but some may still require an older version.
In addition, 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 Microsoft official site
- Open the executable file and follow the instructions.
Remember that after installing any version of this component, you must reboot for the changes to take effect.
Found a typo? Select the text and press Ctrl + Enter
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Download and install the .NET Framework on windows 7
What is the mysterious .NET Framework for ordinary users? This is a proprietary Microsoft programming model designed to develop a variety of programs. The .NET Framework is needed both for developing programs and for running them.
Therefore, if a programmer actively creates a program in a specific version of the .NET Framework, the user cannot run it until the correct version of the .NET Framework is installed.
Disgusting, we understand. However, everything is not so scary, since the required version of the .NET Framework is installed by default in windows 7. However, more on that later.
For now, let's take a look at the existing versions of the .NET Framework.
.NET Framework version 1.0 and 1.1
Version 1.0 is outdated a long time ago and, in fact, is not used. The same applies to version 1.1, which needs to be installed only in very rare cases, when some ancient programmer requires it.
To install .NET Framework 1.1, you need to download it from the link below, then install. Do this only if absolutely necessary - most windows 7 users do not need to download this version.
Download .NET Framework 1.1
It may be that you receive error messages while installing the .NET Framework 1.1 and SP1. In such a situation, the .NET Framework 1.1 can be manually installed as follows.
1. On the C: drive, create a Fix folder (C: \ Fix).
2. Download the .NET Framework 1.1 and Service Pack 1 to this folder.
3. Open a command prompt (you must be using an administrator account). To do this, click on the Start button, enter cmd in the search field and click.
4. Enter the following two commands.
Cd / d C: \ Fix dotnetfx.exe /c:"msiexec.exe / a netfx.msi targetdir = C: \ Fix "
5. Confirm the execution of the commands and enter the following three commands.
NDP1.1sp1-KB867460-X86.exe /xp:C:\Fix\netfxsp.msp msiexec.exe / a c: \ Fix \ netfx.msi / p c: \ Fix \ netfxsp.msp netfx.msi
The .NET Framework 1.1 package should now install without error.
.NET Framework 2.0 - 3.5.1
This version is installed by default in windows 7, which is easy to see for yourself. Select Start> Control Panel> Programs and Features, and then click the Turn Windows features on or off link. And here's proof that .NET Framework 3.5.1 is installed by default on windows 7:
.NET Framework Version 4.0
This version is necessary, first of all, for programmers and is rarely required to execute client programs. However, to run software built in the .NET Framework 4.0, you can (and should) install KB982670, which has been distributed through windows Update for a long time. Over time, there will be more and more programs that require this version of the .NET Framework.
You can download the .NET Framework 4.0 from the following links. We remind you that the full version of the .NET Framework 4.0 version will need to be downloaded only for software development! If you are a regular user, you need a regular, client version of the .NET Framework 4.0 - client profile update KB982670, which you should download via windows Update.
However, if you download the full version of the .NET Framework from the first link and install it, nothing bad will happen - just the system will be replenished with a bunch of unnecessary files that you do not need at all.
What version of the .NET Framework do I have?
You can check this in the Turn windows 7 components on or off window shown above. However, there are other options as well.
2. Or open the registry editor (Start> regedit and click), then go to the next branch, which will indicate the installed versions of the .NET Framework.
HKEY_LOCAL_MACHINE \ SOFTWARE \ Microsoft \ NET Framework Setup \ NDP
As you can see, nothing complicated. We remind you that the .NET Framework, the most common and useful version 3.5.1, is installed by default in windows 7, so before downloading it, check that you should already have it installed.
As a result of experiments with Microsoft .NET Framework, the component may experience some errors and failures. In order to restore its correct operation, reinstallation is required. Previously, you need to uninstall the previous version. Ideally, it is recommended that you delete all of them. This will minimize future errors with Microsoft .NET Framework.
How do I uninstall a Microsoft .NET Framework component completely?
There are several ways to uninstall the .NET Framework in Windows 7. The exception is .NET Framework 3.5. This version is embedded in the system and cannot be removed. It can be disabled in Windows components.
We go into the installation of programs, on the left we see "Enabling and disabling Windows components"... We open it, wait until the information is loaded. Then we find in the list Microsoft .NET Framework 3.5 and disable it. After restarting your computer, the changes will take effect.
Standard deletion
In order to uninstall Microsoft .NET Framework, you can use the standard Windows uninstall wizard. To do this, go to "Start-Control Panel-Remove Programs" find the version you need and click "Delete".
However, in this case, the component leaves behind various tails, including system registry entries. Therefore, we use an additional program for cleaning unnecessary files Ashampoo WinOptimizer. We launch an automatic check in one click.
After we press "Delete" and we reboot the computer.
Removal using a special utility
The most reliable way to remove the .NET Framework completely from your computer in Windows 7 is to use a special tool to remove the component - the .NET Framework Cleanup Tool. You can download the program absolutely free of charge from the official website.
We launch the application. In field "Product to cleanup" choose the required version. It is best to select all, since when you delete one, failures are quite often observed. When the choice is made, click "Cleanup Now".
This removal will take no more than 5 minutes and will remove all .NET Framework products and any remaining registry entries and files.
The utility can also uninstall the .NET Framework in Windows 10 and 8. After running the application, the system needs to be restarted.
When uninstalling the .NET Framework, I would use the second method. In the first case, unnecessary files may still remain. Although they do not interfere with the re-installation of the component, they clog the system.
Hello dear readers or guests of the blog site. Today I want to consider this question, how to remove net framework, correctly and without debris, which remains after this procedure. When you may need this experience, everything is very simple, you may have an old program or game that uses net framework 3.5 or 4.0 components in its work, but when installing newer versions, either it is completely inoperable or permanent glitches. Let's show you the correct sequence of actions. I will show both on server operating systems, such as Windows Server 2012 R2, and on desktop, Windows 7, 8.1, 10.
Can net framework be uninstalled
Of course yes, except of course the version that comes with the Windows operating system by default, for example, in Windows 7, this is version 3.5, for the eight it is already version 4, and so on. Therefore, if necessary, delete not what is possible, but also necessary, especially if the operation of the software or service depends on it.
How to completely remove net framework from computer
And so, before uninstalling, you definitely found out that the reason for the breakdowns and bugs was in this particular component, for example, I had an error WAS 5011, there was a fremwerk that required demolition. Below I will show the options for any operating system.
Disable net framework 3.5
Net framework 3.5 can be removed, Windows XP only, but since in my opinion it is already morally and for obvious reasons outdated, I will not consider it. In older versions of Windows 7 - 10 operating systems, this fremwerk can only be disabled. This is done very simply. Open the control panel, in Windows 7 you can find it in the start-up, in the eight and 10 through the right click on the "Start" button, but the most universal method is to click:
Now, for convenience, we will make a large display of icons and select the "Programs and Features" item
In the left corner, you will see the item "Turn Windows features on or off"
Uncheck ".NET Framework 3.5 (Includes .NET 2.0 and 3.0)". You will start the process of "removing" it, it will remain in the system as a disabled component. You may be asked to reboot.
Removing the Framework Pack 4.0-4.5
Unlike 4.7, this package is easily found among the list of all installed programs, here is an example of Windows 7, where in the "Uninstall or change programs" list you can easily find it and uninstall it using the appropriate buttons.
You will see an additional window with a maintenance wizard, select the item "Remove .NET Framework 4.5.1 from this computer"
Using the NET Framework Cleanup Tool
If you need to remove the net framework nicely and quickly, you can use the free NET Framework Cleanup Tool from Microsoft.
Launch, I will uninstall net framework on Windows 8.1. In the first step, you need to agree to run the utility.
We agree to the license agreement by clicking "Yes".
All in the end, you will see a modest window with a choice of the version of the .NET Framework to be removed, after which we click "Cleanup Now"
What is good, the utility also cleans folders and registry keys.
Quiet operation
NET Framework Cleanup Tool supports a "quiet" mode in which no messages are displayed to the user. To do this, you need to run the program with the following parameters.
<версия для удаления>"
For example, to remove the .NET Framework 1.1, you would run the following code.
Cleanup_tool.exe / q: a /c:"cleanup.exe / p .NET Framework 1.1 "
However, even in quiet mode, it will not be possible to uninstall .Net versions that are a component of the operating system.
Automatic operation
NET Framework Cleanup Tool can work in automatic mode, in which a window with a progress bar for deletion is displayed to the user. No user interaction is required. To work in automatic mode, the program must be executed with the following parameters.
Cleanup_tool.exe / q: a /c:"cleanup.exe / p<версия для удаления>/ u "
That is, to remove the same .NET Framework 1.1, the line will look like this.
Cleanup_tool.exe / q: a /c:"cleanup.exe / p .NET Framework 1.1 / u "
Return codes
- - The program requires administrator rights
- 2 - The cleanup.ini file was not found in the folder along with cleanup.exe
- 3 - This version cannot be uninstalled because it is a system component
- 4 - The specified version name is not in the cleanup.ini file
- 100 - Uninstall was started but failed
- 1602 - The deletion was canceled.
Removing NET Framework on Windows Server
In Windows Server, the procedure is similar, for versions 3.5 and 4.5 it is the disabling of the component through Server Manager. Here's an example of 2012 R2. In 2008 R2, version 4.5, it will not work this way.
I hope that these methods will be useful to you and that you can safely remove or disable the required version of the fremwerk.
Good afternoon.
Most users have a lot of questions about the Microsoft .NET Framework package. In today's article, I would like to focus on this package and analyze all the most frequently asked questions.
Of course, one article will not save you from all misfortunes, and yet it will cover 80% of the questions ...
1. Microsoft .NET Framework What is it?
NET Framework is a software package (sometimes they use the terms: technology, platform), which is designed for developing programs and applications. The main feature of the package is that different services and programs written in different programming languages will be compatible.
For example, a program written in C ++ can refer to a library written in Delphi.
Here you can draw some analogy with for audio-video files. If you do not have codecs, then you will not be able to listen to or watch this or that file. It's the same with the NET Framework - if you don't have the version you need, then you won't be able to run certain programs and applications.
Is it possible not to install the NET Framework?
It is possible and many users do not. There are several explanations for this here.
First, the NET Framework is installed by default with Windows (for example, the 3.5.1 package is included in Windows 7).
Secondly, many do not run any games or programs that require this package.
Thirdly, many do not even notice when installing the game that after installing it, it automatically updates or installs the NET Framework package. Therefore, many people think that it is unnecessary to look for anything specifically, the OS and applications will find and install everything themselves (this usually happens, but sometimes errors also fly out ...).
Therefore, if errors began to appear when starting a new game or program, look at its system requirements, perhaps you simply do not have the required platform ...
2. How can I find out what versions are installed on the system?
Almost none of the users know which versions of the NET Framework are installed on the system. To determine, the easiest way is to use a special utility. One of the best, in my opinion, is NET Version Detector.
This utility does not need to be installed, it is enough to download and run it.
For example, I have installed on my system: .NET FW 2.0 SP 2; .NET FW 3.0 SP 2; .NET FW 3.5 SP 1; .NET FW 4.5.
By the way, here I should make a small footnote and say that the following components are included in NET Framework 3.5.1:
.NET Framework 2.0 SP1 and SP2
- Platform .NET Framework 3.0 with SP1 and SP2;
- .NET Framework 3.5 SP1.
You can also find out about the installed NET Framework platforms in Windows. In Windows 8 (7 *), you need to log into control panel / programs / enable or disable Windows features.
3. Where can I download all versions of the Microsoft .NET Framework?
NET Framework 1, 1.1
Now they are practically not used. If you have programs that refuse to start, and the requirements for them specify the NET Framework 1.1 platform - in this case, you will have to install. In the rest, it is unlikely that an error occurs due to the lack of the first versions. By the way, these versions are not installed by default with Windows 7, 8.
4. How to uninstall Microsoft .NET Framework and install a different version (reinstallation)?
This happens, of course, rarely. Sometimes it seems like the required version of the NET Framework is installed, but the program still does not start (all sorts of errors are pouring in). In this case, it makes sense to remove the previously installed NET Framework and install a new one.
To remove it, it is best to use a special utility, the link to it is just below.
NET Framework Cleanup Tool
You don't need to install the utility, just run it and agree to the rules of its use. Next, it will offer you to remove all Net Framework platforms - All Versions (Windows8). Agree and click the "Cleanup Now" button - clean up now.
After uninstalling, restart your computer. Then you can start downloading and installing new platform versions.
That's all. Good luck with your applications and services, everyone.
