Will not install on windows 10. It claims to install in Program Files\Skylum but there is no sign of it there. According to my Geek Uninstaller Program List, it is present but as 32 bit version. I did find a smaller File called Aurora HDR setup.exe (3MB) in Program Data\ Package Cache. Double clicking on it has same effect as double clicking on 930 MB file of same name in Downloads folder. Can apparently be uninstalled but clicking on Repair in Aurora dialog box which appears when I start setup.exe does nothing except to tell me after a while that installation has been successful. On the net I find this program has given others trouble. Some have found a way to overcome this problem but you need to be a computer expert to attempt it.