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I have two apps written in MAUI Mac Catalyst Framework -- one is main app, second is app updater. My updater works this way: it is located in the same directory as main app: firstly it deletes MainApp.app/Contents folder, then unzips new Contents folder that was downloaded from server. I added NSUpdateSecurityPolicy dictionary as in https://developer.apple.com/documentation/bundleresources/information_property_list/nsupdatesecuritypolicy and create application like . It looks that I wrote everything fine pkgbuild --install-location '/Library/Application Support/First' --root root --ownership preserve # aslo signing, etc But on user's macOS, system does not allow to delete Contents folder: I have IO_Access denied exception. Can it be because main app is sandboxing or something else? What I can do wrong? Thanks a lot in advance!