Question : Problem: Quicktime won't install in vista

When I attempted to update to the latest quicktime and Itunes my problem began. I have uninstalled itunes and quicktime. I have removed all references using regedit and ccleaner. I am using Vista Ultimate SP1.  I have tried quicktime by itself and it will download and when I try to run nothing happens. No error messages

Answer : Problem: Quicktime won't install in vista

Try right-clicking on it, and going: Run As Administrator.