As captured in the long thread "'''What's the difference between ALLOW and ALLOW for a SESSION'''?”, with a lot of handholding from jscher2000, I managed to set custom choices for privacy and security the way I wanted on my mac computer (blocking all cookies in all windows, with exceptions saved for ALLOW, ALLOW for SESSION and some for BLOCK). To accomplish this, '''required enabling deletion of cookies '''when Firefox closes. My assumption based on information I got in the above mentioned thread, was that even when deletion of cookies is checked for when Firefox is closed, cookies for websites identified as exceptions with ALLOWED, are not deleted. However, this is not what happens. A specific example is tripcheck.com, which stores custom itineraries for cameras in cookies. I setup quite a few of these custom itineraries and saved them and they were OK until I closed Firefox, when they were deleted, as the cookie was deleted. This website is setup as ALLOW in the Exceptions list. As explained in the above mentioned thread: ''"(2) Scenario Two [X] Delete cookies and site data when Firefox is closed (checked) Firefox shortens cookie expiration to session only unless the site has an ALLOW permission in the exceptions list. “.'' I am more confused than ever, the settings do not appear to be working the way they are meant to work, not only for session cookies but also for what should be "permanent". Am I doing something incorrectly or am I misunderstanding how setting should work? If cookies of websites setup for ALLOW are deleted when Firefox is closed, the setting is defeating what I am trying to accomplish: saving cookies for websites that I use and save data in cookies (such as recognizing the computer, what’s needed for 2 step authentication, etc.). Thanks.