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Looks very hidden https://support.mozilla.org/en-US/kb/disable-third-party-cookies https://support.mozilla.org/en-US/kb/disable-third-party-coo... Also that's

Looks very hidden https://support.mozilla.org/en-US/kb/disable-third-party-cookies https://support.mozilla.org/en-US/kb/disable-third-party-coo... Also that's not hidden that's under options. No digging around in about:config

Tepix 12y ago
Yes, it's hidden indeed. You don't get to see the checkbox to disable it until you change a select box "Firefox will: [Remember history]" It's totally unintuitive to look for the 3rd party cookies options there. I know because it took me a while to find it. And I don't think it should be required to look at the documentation to do something as trivial as blocking 3rd party cookies.