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Firefox not blocking YouTube and Grammarly Cookies

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I have added to my "never save cookies" including third party cookies. Even in Chrome these cookies somehow circumvent being disabled. Anyone know how to permanently prevent these cookies from being saved besides launching these browsers in Incognito mode? https://youtube.com http://youtube.com https://grammarly.com http://grammarly.com

I have added to my "never save cookies" including third party cookies. Even in Chrome these cookies somehow circumvent being disabled. Anyone know how to permanently prevent these cookies from being saved besides launching these browsers in Incognito mode? https://youtube.com http://youtube.com https://grammarly.com http://grammarly.com

All Replies (2)

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cor-el said

YouTube uses Google cookies like all other Google websites and probably need these to function properly, so Firefox might be using the smartblock feature.

That's not it. It's also a problem on Chromium browsers too with minimal extensions and stock settings. Grammarly and YouTube are the problematic extensions for both browsers (Chrome and FF)>