You can view all cookies, and delete selected or all cookies, in firefox. Go to tools>options>privacy and there is a button named 'show cookies' . Click on that and you will see all cookies, grouped by site, and you will be able to delete any cookies you choose to. If you just want to do a quick cleanout and have no interest in saving any cookies, if you go to tools>clear private data then you can select a bunch of actions to perform, including deleting all cookies.firefox cookies are in local disk (C in most cases) documents and settingsusername at this point you need to find a folder called application data. If you cant see it, then go to folder options and display hidden files and folders. within the folder 'application data', go to mozillafirefoxprofiles.user profile folders are there.. in my case only one... in my case its called qzx3idps.default.Cookies are stored in that folder, with a bunch of other files, as a simple text file, cookies.sqlite , which can be opened with notepad though its pretty much unintelligible.Some useful stuff to know..
Mitz from Tips4pc