Running third-party programs in Windows requires the system to have the necessary components and to work properly. If one of the rules is violated, several errors will inevitably occur which will prevent the application from continuing to function. In this post we will talk about one of them with the code CLR20r3.
CLR20r3 bug fix
There are several reasons that cause this error, but the main one is the malfunction of the .NET Framework component, the lack of version or its total absence. It can also be generated by a virus attack or by defects in the system files responsible for the functionality of the corresponding system components.. The following instructions must be followed in the order they are aligned.
Method 1: restore the system
This method will be effective if the problems started after installing programs, Windows drivers or updates. The main thing here is to correctly determine the cause of this behavior and then choose the correct restore point.
Read more: How to recover Windows 7
Method 2: fix update problems
If the error occurred after a system update, the procedure is likely to have ended with errors. In such a situation, should erase the factors that impact the success of the operation and, if not successful, install required packages manually.
read more:
Why won't updates install on Windows 7?
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Method 3: troubleshooting the .NET Framework
As we previously wrote, this is the main cause of the failure discussed. This component is vital for some programs in order to enable all functions or simply to be able to run on Windows. The factors that impact the operation of the .NET Framework are varied. Are the actions of the virus or the user himself, the incorrect update and also the mismatch between the installed version and the software requirements. You can fix the problem by checking the component hotfix and reinstalling or updating it.
read more:
How to find out the version of the .NET Framework
How to update the .NET Framework
How to uninstall .NET Framework
.NET Framework 4 not installed: how to fix the problem
Method 4: look for viruses
If the above methods don't help clear the error, you should check your PC for viruses that may be blocking the execution of the program code. You should also do this if the problem has been eliminated, because pests could have generated it in the first place by corrupting files or changing system settings.
More information: Fight against computer viruses
Method 5: restore system files
This is the last resort to correct the CLR20r3 error, the only thing that follows is to reinstall the system. Windows has a built-in SFC.EXE utility that has the function of protecting and restoring corrupted or lost system files. Run it from the “Symbol of the system” on a running system or recovery environment.
Here is an important nuance: if you use an unofficial build (pirated) of “Windows”, this procedure can completely deprive it of its operability.
read more:
Checking the integrity of system files in Windows 7
Restore system files in Windows 7
Conclution:
Fixing the CLR20r3 error can be quite difficult, especially if viruses have installed themselves on your computer. Despite this, in your situation it may not be that serious and you can update the .NET Framework, which is the most common. If none of the methods help, Unfortunately, you will have to reinstall Windows.
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