I am making use of Internet explorer 8 on my windows 7 system. But yesterday I thought to upgrade it to internet explorer 9. When I run the set-up utility it ask me to download several extra hot fixes as well as after that when I re-run the installation. The progress bar goes up to 20% and after that gives error "could not start setup". I have attempted it more than three times but each time I receive the same error message. I was not able to rectify it, if you have any idea or suggestion regarding to this please let me know. Thank you for your valuable suggestion.