Hi,
I would suggest you to follow the steps outlined in the below article: QuickTime for Windows: Error -2093: http://support.apple.com/kb/TA38915?viewlocale=en\_US
If the issue continues, see "Trouble installing iPod, iTunes, or QuickTime software in Windows" for additional troubleshooting steps.
I also recommend that you visit Apple Forums for further assistance from the link below:http://discussions.apple.com/category.jspa?categoryID=122
Regards,
Manasa P – Microsoft Support.