So i’m looking into the idea of using something like bsdiff to create very small and automatic patches. One limitation i notices is it won’t update the installed version number that is show in Programs and Features in win7. Is there some way you can manually update this, any api’s you should be using? and any other things you should consider, obviously things like UAC will need to be considered.
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In addition to Bevan’s answer on 64bit machines the path could be HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall
I’m not sure if Current user also has this structure