Silent Update Checks Are Always A Bad Idea

[Thomas]

Device Doctor is designed to be as simple as possible. There are no options, it just does the job. Yet what you mention is one of those more questionable parts - while there is an option during installation, as you noted already, it's not possible to turn it off later on easily.
(It shall be possible to do new installation over the old one, and disable that option in the installation dialogue.)

I also tried to search registry but couldn't find any obvious setting - I still think it might be possible to turn it off somewhere in the registry, perhaps in the installer part, maybe developers will jump in with a suggestion unless I'm wrong about it (also they read the forum posts, so rest assured they read this and hopefully they will also come up with some idea how to make that setting more accessible).

Thank you for the feedback!