home » IT technologies » Net framework error what to do. What does the net framework initialization error mean. What to do if the .NET Framework fails: "Initialization error. How to solve the problem with initializing the NET Framework

Net framework error what to do. What does the net framework initialization error mean. What to do if the .NET Framework fails: "Initialization error. How to solve the problem with initializing the NET Framework

In my case, this error was issued by Kaspersky Anti-Virus, but it can also be issued by any program using Microsoft .Net Framework 4.0, which could not detect it at startup. To fix the error, you need to reinstall Microsoft .Net Framework 4.0 or restore it. Pre-create a system restore point or take an image system disk so that you can roll back if something goes wrong.

To do this, we will use the most effective utility in such cases - the .NET Framework cleanup tool, which in most cases solves any problems with the .NET Framework current versions. You can download it or, then you need to unpack the archive and run the cleanup_tool.exe file, agree with the launch, click yes, then click Yes and accept the license agreement:

Select the required version of the .Net Framework in the drop-down list:

And press the Cleanup now button

We agree to delete and change system files:

We are waiting for the inscription to appear (some versions are deleted with a reboot, it may be executed automatically, or you will receive a request):

To successfully restore Microsoft .Net Framework 4.0, you also need to remove 4.5.1 and 4.5.2:

Select them one by one and delete them. After everything is removed, you can (but not necessarily) reboot, clean the temporary files, download the full or online installer of Microsoft .Net Framework 4.0 and start the installation. We agree with license agreement and wait for the installation to complete:

If everything is done correctly, the installation will be successful, and all applications that require Microsoft .Net Framework 4.0 will start working without errors. By analogy, errors are corrected in other microsoft versions .NET Framerwork.

Microsoft .NET Framework is a necessary component for many programs and games to work. It is perfectly compatible with Windows and most applications. Malfunctions in its work do not occur often, but it can still be.

When installing a new application, users can see a window with the following content: ".NET Framework Error, Unhandled Application Exception"... When the button is pressed "Proceed", the installed software will try to launch it ignoring the error, but it will still not work correctly.

Why is an unhandled exception being thrown in a Microsoft .NET Framework application?

I want to say right away that if this problem appeared after installing a new software, then it is in it, and not in the Microsoft .NET Framework component itself.

Requirements for installing a new application

By setting, for example, new game you can see an error warning window. The first thing to do in this case is to check the conditions for installing the game. Quite often, programs use additional components for their work. It can be DirectX, C ++ library and much more.

Check if you have them. If not, install by downloading the distributions from the official site. It may be that component versions are out of date and need to be updated. We also go to the manufacturer's website and download new ones.

Or we can do it with special toolsthat update programs in automatic mode... For example, there is a small utility SUMo , which will help you easily solve this problem.

Reinstall Microsoft .NET Framework

To fix the error, you can try reinstalling the Microsoft .NET Framework component.
We go to the official website and download the current version. Then we remove the previous Microsoft .NET Framework from the computer. Using the standard Windows wizard will not be enough. For complete removal it is necessary to involve other programs that clean out the remaining files and records from the system system registry... I do this with CCleaner.

After removing the component, we can reinstall Microsoft .NET Framework.

Reinstalling the error program

Do the same with the program that caused the error. Be sure to download it from the official website. Removal is the same, via CCleaner.

Use of Russian symbols

Many games and programs do not accept Russian characters. If your system has folders with Russian names, then they must be changed to English. The best option is to look in the program settings where the information from the game is thrown. Moreover, not only the final folder is important, but also the entire path.

You can use another method. In the same game settings, we change the file storage location. We create new folder in English or choose an existing one. As in the first case, we look through the path. To be sure, we restart the computer and restart the application.

Drivers

Correct operation of many programs and games directly depends on the state of the drivers. If they are out of date or not at all, they can fail, including an unhandled exception error in the .NET Framework application.

You can view the status of the drivers in the task manager. In the properties of the equipment, go to the tab "Driver" and click update. To complete this task, the computer must have active connection to the internet.

In order not to do this manually, you can use programs to automatic update drivers. I like the program Driver genius ... You need to scan your computer for outdated drivers and update the necessary ones.

After which the computer should be rebooted.

System requirements

Very often, users install programs without delving into their minimal system requirements... In this case, too, an unhandled application error and many others can occur.
Check the installation requirements for your program and compare with yours. You can see it in the properties "My computer".

If this is the reason, you can try, install more early version programs, they are usually less demanding on the system.

Priority

Another cause of errors in the .NET Framework can be the processor. While working with a computer, various processes are constantly started and stopped, which have different priorities.

To solve the problem, you need to go to "Task Manager" and in the processes tab, find the one that matches your game. By clicking on it right click mouse, appear additional list... It is necessary to find in it "Priority" and set the value there "Tall"... This will increase the productivity of the process and the error may disappear. The only drawback of this method is that the performance of other programs will decrease slightly.

We've covered the most common .NET Framework error issues "Unhandled Application Exception"... The problem, although not common, is a lot of trouble. If none of the options helped, you can write to the support service of the program or game that you installed.

Compulsory programmatic requirement for up-to-date versions of Kaspersky Lab anti-virus products is availability in microsoft system .NET Framework 4.0... Due to the absence of this component or its malfunctioning, Kaspersky Anti-Virus may fail to install, launch with a "white window", etc.

To fix errors in the Microsoft .NET Framework, run:

Download and run Microsoft .NET Framework Repair Tool - a utility for diagnosing and fixing problems with the Microsoft .NET Framework.
Follow the steps in the installer for the program, and then restart your computer.
Try to install the Kaspersky Lab product again.

3. If the problems cannot be eliminated using the Microsoft .NET Framework Repair Tool, reinstall .Net Framework:

Remove the program standard means Windows:
for Windows up to version 10, open Start\u003e Control Panel\u003e Add / Remove Programs;
for Windows 10 - Win + X\u003e Control Panel\u003e Programs and Features\u003e Turn on or off windows components \u003e uncheck the .Net Framework components\u003e Ok
After uninstalling, download and install the latest .Net Framework.

4. If this recommendation didn't help, then:
open command prompt (cmd) as administrator (Win + X - command line (administrator)), enter in turn:
dism.exe / online / cleanup-image / scanhealth hit enter
dism.exe / online / cleanup-image / restorehealth hit enter
sfc / scannow hit enter

07/25/2017 windows

One of possible mistakes when starting programs or when logging into Windows 10, 8, or Windows 7 - the message "Error initializing the .NET Framework. To run this application, you must first install one of the following versions of the .NET Framework: 4 "(the version is usually specified more accurately, but this does not matter). This could be because the .NET Framework is not installed desired versionand problems with the components installed on the computer.

In this instruction - possible ways fix .NET Framework 4 initialization errors in latest versions Windows and fix startup programs.

Note: further in the instructions for the proposed .NET Framework 4.7, as the latest at the current time. Regardless of which of the "4" versions you want to install in the error message, the latter should come up as including all the necessary components.