During the installation of Visual Studio 2015 Community on Windows 10 the following error occurred for me:
A Setup Package i
I was facing the same problem. First I tried the online installation and faced above problem, then I tried to install VS2015 from ISO but it was also giving an error saying "Product version which is higher than what you are trying to install is already installed in the device". I read many post on this but none of them had solved my issue. Finally I went to control panel and uninstalled a Visual studio Updater program. Then offline installation worked for me.