Unable to install .net framework 4.0


I have cleaned up the .net frame work 4.0 from my system using clean utility. It was uninstalled .net frame work framework 4.0. Then i tried to reinstall 4.0 using the set up file got from below link.


But i am getting installation failed error.

Error msg : Installation failed with error code: (0x80070643), "Fatal error during installation.

I am using windows server 2008 32bit OS.

Can any one please give me a solution?

Regards, Karthik.

asked on Stack Overflow Jun 12, 2012 by Karthik

1 Answer


This usually means you already have a .NET installation on your system but it's corrupted. If this is the case you can try the following:

Go to Control Panel->Programs and Features and open the .NET Framework 4 Client Profile installer.

Select Repair .NET Framework 4 Client Profile to its original state. Reboot afterwards.

After this is done try to reinstall .NET Framework 4 using the offline installer


answered on Stack Overflow Jun 12, 2012 by Leon Lucardie

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