Note that Apple does not list repeated prompts to unlock the keychain your login keychain is stored in ~/Library/Keychains, though, and would be affected if local permissions were to be changed. problems with Photos or iPhoto libraries, including inability to import into the library, or forgetting the library each time the app is opened.Safari or SafariDAVClient use large amounts of resources (memory).alerts warning that the startup disk has no more space available for app memory.Preview, TextEdit, and App Store apps (which are sandboxed) may crash when opened.when trying to save, you are told that the file is locked, or that you don’t have permission. you are asked to authenticate when trying to move or alter some folders in your Home folder.changes made to the Dock do not ‘stick’.changes to preference settings, particularly those for System Preferences, do not ‘stick’.I therefore wonder whether a bug in Near Lock might be a common cause of altered permissions in Home folders.Īpple provides a long list of problems which could result from incorrect permissions in your Home folder. Indeed, one not infrequently-reported cause seems to be enabling and using Near Lock, the relatively new feature which allows you to unlock your Mac using your iPhone over Bluetooth. What the support note does not say is that software might change those permissions for you. The note refers to the user changing those permissions, but in my experience few users are ever likely to do that deliberately, and it is most unlikely to be accidental. The question that Apple’s support note does not consider is how the permissions in, say, ~/Library might get changed. Apple has recognised that changing their permissions can result in a wide range of problems, few of which clearly point to it being a permissions problem. There are still plenty of unprotected folders and files, including many of those in /Library, third-party apps in /Applications, and of course everything in your Home folder, particularly in ~/Library. So that makes traditional repair of permissions superfluous, and it could only have been performed in Recovery mode in any case. No app, no matter how badly behaved, can change permissions or anything else in those protected files. The only ways that they can get changed involve special Apple-signed installers, or Recovery mode. Since Apple introduced its System Integrity Protection (SIP) in El Capitan, all macOS system files – including now all the bundled apps too – are protected from intentional and inadvertent tampering. With details buried away in one of Apple’s lesser-known support notes, this also relies on an undocumented Terminal command. Amazingly, Apple is recommending it as a solution again, only this time it’s not the permissions in macOS, but those of your Home folder. We used to do it often, and it could fix the most intransigent of problems at times: repairing permissions.
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