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This article: https://support.mozilla.org/en-US/questions/1283074

I don't believe it even comes close. The traces in re: C:\Users\User\AppData\Local\Mozilla\Firefox\Profiles\0NB2KS6j.Profile 1\cache2\entries

It all stopped going away with Wide Disk Cleaner after we began using Windows 10 several weeks ago. Under Win 7 Pro all those files were deleted.

Firefox has nothing I have ever seen that will clear ALL traces beyond the limited things the interface allows you to clear.

In the past, when I would download a Firefox update to my laptop, when I cleared the Cookies and Data, there would be zero remaining. Now, every time I download a Firefox update 24KB of data remain and will not clear when I push the Clear Data button. If there is more in the Cookies and Data file, when I push the Clear Data button most of what is there is removed but there is always 24KB that remains and will not clear.

1. Why has the Firefox updates started leaving 24KB permanently in the cookies and data file?

2. How are we to remove the remaining 24KB that does not clear when you push the Clear Data button?

One of the recent updates changed Firefox's behaviour. It now remembers my login status to various sites when I close the browser. For example, if I was logged in to facebook when I closed the browser, I will be logged in when I open the browser and navigate to facebook.com. This was not the case until very recently (a few weeks at most). Is there a way to change this?

I have strict privacy settings, and Firefox should delete all cookies when it is closed. There are no 'exceptions'. I have 'always use private mode' checked for history. Also: I haven't changed any settings recently - something changed in Firefox.

Any advice? Thank you.

I cannot get into my online accounts, as I have always done for years. After I select the site, the screen looks like it is working, but then a new empty window pops up: the tab says "citi 400 Bad Request" At the top of the empty screen it says: Bad Request. Your browser sent a request that this server could not understand. Size of a request header field exceeds server limit.

I have 2 different bookmarks. 1 for Citi Card Visa & ! for Citi Card MC. Both take me to the same online screen. Can "cookies" or something similar in Firefox be causing this and can I fix it. Citi Card techs can't help!

How to turn back on cookies, even though it says 3rd party cookies are on they are not on or something is stopping access to sites previously used. Where to or how to reset without destroying everything.

It is been like 6 or 7 months now since i move to new pc and i been using firefox in this new pc together with other browsers. I am not really using firefox for anything related to google or gmail but just other website that have 0 relation to them. But i have still logged in my main accounts in firefox. It is been twice that once in a while, when i have to check my gmail accounts, all of them disappear and all i see is just sign in page only. There is no log in again or Please log in to this address or that address but straight up fresh page of google sign in page. I still logged back in when it first happened because i heard about the bug that happened with firefox update but now it happen again. It is as if my cookies just vanished but no, other sites still got their own cookies and there is many cache of other website here. other than my google accounts. What is happening here. Is my firefox bugged or something? Should i reinstall and have to relogin everything "again?"

All of a sudden I have had problems getting into my gmail or anything Google through Firefox. I have tried deleting cookies and it would work. Now it will not work at all. What has Firefox done? How can I fix this?

I have one website that gives me a "Secure Connection Failed" If I click on the icon in the left address bar on mybrowser, I am given an option to "Clear cookies and site data" I click that and then appears a blue button at top that says "Clear" Now when I do a refresh of the tab, everything loads fine. This is Newsmax.com I read the news there. IS there a way to into Firefox settings and make an exception to https"//newsmax.com and make it so I don't have to keep clicking "Clear Site Data and Cookies" ? Thanks!