My team is attempting to use an an add-in for Outlook for Mac that stores a Microsoft account access credentials in safari, so that it can refresh the credentials in the background and not force users to manually re-login every time the credentials expire. The update to safari that prevents local storage has prevented this from working correctly. It appears that the local storage prevention policy can be disabled with this command: 'defaults write com.apple.Safari BlockStoragePolicy -bool false' This initially seemed to work but no long seems to be allowing the credentials to be stored. I was unable to find any documentation as to what exactly this command does. I wanted to see if anyone knew exactly what this command does and if there is a variation or alternative command that would make local storage in safari allowed again.