Is it true that the auth.db file is reset after updates? If so, is this behavior expected and when does it occur specifically?
Does this occur on minor updates as well or major OS updates only?
Is it true that the auth.db file is reset after updates?
Last I checked that was the case. If you want to know the current state of affairs, it’s easy to test it for yourself [1]. However, you have to understand that this is an implementation detail. You should aim to create a product that works either way.
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Quinn “The Eskimo!” @ Developer Technical Support @ Apple
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[1] I generally use VMs for this sort of testing, which makes it easy to repeat a given test from a known good snapshot.