Can I make exceptions to save cookies if I choose to disallow all cookies?:

You can make exceptions, and you can include your choices for important cookies so that those exceptions remain in place even if change your default later because the exception includes the ability to specify even the current default setting.

Tools ("Alt+T") > Options > Privacy > Exceptions

Under exceptions you can override the default choice even if the default is the same as exception so that the exception will always be in place. Your choices are "Block", "Allow for Session", and "Allow".

There is another place that you can view and change your choices and see other security and privacy choices for the currently active tab. Click on the favicon on the location bar for "More information" and see in "Permissions" and "Security:" tabs.

Other cookie questions may be answered in the links provided for /questions/836913

Let all cookies expire when you close Firefox.

• Tools > Options > Privacy > Cookies: "Keep until": "I close Firefox"

Make an Allow exception for the ones that you want to keep.

• Tools > Options > Privacy > Cookies: "Exceptions"

You can inspect and modify the permissions for the domain in the current tab in "Tools > Page Info > Permissions"

Make sure that you do not use "Clear Recent History" to clear the "Cookies" and the "Site Preferences" (Site Preferences includes the cookie exceptions)

• https://support.mozilla.com/kb/Clear+Recent+History

Clearing cookies will remove all specified (selected) cookies including cookies that have an allow exception.

See also:

• https://support.mozilla.com/kb/Cookies
• https://support.mozilla.com/kb/Enabling+and+disabling+cookies