https://devblogs.microsoft.com/oldnewthing/20121205-00/?p=5913/
Why do I get notified for changes to HKEY_CLASSES_ROOT when nobody is writing to HKEY_CLASSES_ROOT?...
Dec 5, 2012 - A customer had a question about the RegNotifyChangeKeyValue function. We are using it to monitor the HKEY_CLASSES_ROOT tree as
why do ihkey classes rootget notifiedchangesnobody