There are certain cookies that remain after using a browser's internal clean-up function and/or specialized extensions/add-ons. Why is it that only CCleaner is able to uncover these and delete them?
If you click the cookie, in the cookies on this pc column of the cookies option, there should be an icon at the bottom of ccleaner. That'll say where the cookie is stored.
My concern isn't what browser the cookies belong to; that is obvious.
The question I had was why only CCleaner can detect and delete these "special" cookies. The browsers are oblivious to the fact that they even exist.
i was getting at maybe they're flash cookies, but none-the-less I know local storage is covered under cookies for microsoft browsers, could they be those?
That's been a mystery for years that I've noticed on my own system a couple of times, and I was able to back then confirm that only CCleaner was able to see the cookie as no other 3rd party cleaning tool would list it. It can happen on very rare occasions, and then the cookie will just disappear all on its own.
One thing I've noticed with some of these is they're occasionally used/created by add-on's which use them to store custom settings. This naturally doesn't account for all of them and only a few add-ons seem to do it this way, (it probably depends on the browser used too, I've only noticed this scenario with Firefox).