Are you referring to specific cookies? Current Firefox version have an extra setting to allow third-party cookies from sites that you have visited. To see all History and Cookie settings, choose: *Tools > Options > Privacy > Firefox will: "Use custom settings for history" You can inspect and manage the permissions for the domain in the currently selected tab by clicking the "Site Identity Button" (globe/padlock) on the location bar and "More Information" to open "Page Info" and go to the Permissions tab. *Tools > Page Info > Permissions *https://support.mozilla.org/kb/Site+Identity+Button ----- You can also look for cookie manage extensions on the Add-ons website. *Cookie Controller: https://addons.mozilla.org/firefox/addon/cookie-controller/ *Cookies Manager+: https://addons.mozilla.org/firefox/addon/cookies-manager-plus/ *Cookie Monster: https://addons.mozilla.org/firefox/addon/cookie-monster/