Windows - on some systems, admin users cannot immediately install "for all users"
posted this on May 05, 2013 19:59
(Updated February 17, 2014 )
On Windows Vista and above with User Access Control (UAC) enabled, the msi installer does not enable the "Install for All Users" option, which is required to install Canopy to "Program Files". In this case, you need to start the installation from a command prompt with elevated privileges, by doing these steps exactly (even if you are already an administrator):
Type "cmd" in the start menu text entry box.
Right-click on the "cmd" program which appears at the top of the start menu and select "Run as Administrator".