.Net Framework Cleanup Tool is a small FREE utility which lets you clean up any issues you are facing installing ,uninstalling repair or patching errors in a particular framework.
.Net Framework Cleanup Tool lets you restore your system to a relatively clean state so that you can re install the respective framework without facing any errors in the installation of a particular framework
You just need to select the .net framework version for which you are gfacing the problem and press the button Cleanup Now