I had the same hang problem I found if I disconnect from the internet by disabling my internet connection the update will install easily and fast from the down loaded install file which I downloaded before the disable action. This also happened as well when I upgraded from the free version to the professional version of Ccleaner. I've been looking for the reason why this happens without success. My system win7 home premium 32bit Sp1 router Netgear R6300 wifi 11ac dual band I'm in Australia. Regards