The following screen shot image displays Windows Update history that recorded close to 12 + attempts of KB947562 failed installation.
Few minutes of Googling provided a simple solution to install the update manually. Here are the simple steps to be followed to install the update manually
- Launch Internet Explorer browser (Firefox does not work as we need to validate Windows) and point the browser to Windows Update KB947562 page
- Validate your Windows Vista operating system and download the installable manually
- Log off from Internet
- Close any anti virus & anti spyware application if they are running
- Manually install the downloaded update by double clicking it
- Restart the computer