Solution to install the latest .net framework update

I know that we are all facing the same problem and that is having trouble installing the latest update. The most common update that don't install is the Security Update for Microsoft .Net Framework 1.1

To install the update, you need to remove all versions of .net framework using a tool:
http://blogs.msdn.com/astebner/attachment/8904493.ashx

Restart the computer

Go to http://update.microsoft.com/

Choose Custom install and choose all .net framework and install them.
You need to reboot multiple times and check for updates online until all the .net framework are installed.