Firefox Community Forum

For the last several weeks, one of my computers when it updated to the new settings menu (version 156ish?), it has lost the ability to maintain some of the synced profile settings. For example, I have a couple websites that I list in the exceptions to not have Firefox clear the cookies, and I additionally have the clear cookies and site data check box enabled so that every other website I visit clears upon exiting. This is the setting combination I have utilized for years to keep the cookies from only 2 websites and clear out everything else.

On one of my computers, I'm able to add the exception, and as long as I do not close Firefox, the website exception settings stick. However, as soon as I exit Firefox, and open it back up, the settings clear themselves again, and I have to manually enter the exceptions again. This is very frustrating because one of the sites that I keep the cookies on the exception list has multiple different logins saved so that I don't have to manually re-login to every time I open Firefox.

I have attempted a refresh, and that did not fix the problem. I have fully uninstalled Firefox, manually deleted the %APPDATA%\Mozilla\ folder contents, reinstalled foxfire and this too does not fix the problem.

The weirdest part of this whole issue is my laptop, does not have this problem and the exceptions are sticking so I know that this setting combo works. Additionally, I have tried unchecking the clear cookies and site data box and this too is not allowing the exceptions to stick.

I have also tried re-syncing my account to pull the settings from my laptop and this too is not working.

This experience is on Firefox 157.0.1 (64-bit), Windows 11 Pro 26H2

Thanks for your time and please advise as to how to fix.

Hi, Both my wife and I have been using both Firefox for many, many years and only realised today that I did not have an account. I have two problems, both starting at the same time, (1) every time I use my computer (now both a desktop & a ASUS 17 laptop) my current tabs I don't have my original tabs which I rely on having when I have a project running, and (2) when I start my computer I have to go through the 'ticket the squares with bicycles in" to verify I'm human. If I close Firefox and very shortly open it again I don't get the check. For the first problem I've checked the Settings and they are as I have always had then to restart tabs that were present on shutdown. For the security check I've googled an explanation/fix but most times I get a suggestion to look at some setting which I can't find anywhere. Hopefully you can answer my problems. I synced with my iPhone 15, not too sure that I had any success as the prompts didn't line up with the displayed requests. My version of Firefox is 157.0 (64-bit) running on Windows 11 Version 25H2 (OS build 26.200.9457. I have updated to latest version Thank you, KenDiment

Hi,

I am in the process of migrating between systems. I have my desktop with Firefox, I use some multi account containers, I clear cache and cookies on browser close and I have some exceptions to not clear cookies, as I want to stay logged into my accounts. It worked fine on my desktop.

Now, I tried to do the same for my laptop. I turned in account sync and add on sync, my browser settings and containers are indeed synced. But the exceptions are not synced, so I tried setting an exception for some of the sites like my desktop, logged in, closed browser, and I am not logged in anymore. Nevertheless, the exceptions are still remembered.

Some details:

   On my PC, The exceptions are both in the Browsing Data section and in the History exceptions. So I tried setting the exceptions to both on my laptop too, still no success.

   On my desktop (where it works), I don't use the "Always use private browsing mode" option, and on History->settings "Cookies and site data" are checked, and "Site settings" is not checked.

Can anyone please help me troubleshoot this? I really don't think it should be that hard, maybe as Firefox updated it became bugged or something?

Thanks in advance.

Ich benutze Firefox zum regelmäßigen Surfen im Internet. Dabei habe ich firefox so eingestellt, dass alle Cookies beim Beenden von Firefox gelöscht werden. Zu dieser regel habe einige Ausnahmen formuliert für Webseiten, deren Cookies nicht gelöscht werden sollen. Genau dies funktioniert nicht!!! Das Beibehalten von Cookies der gelisteten Ausnahmen funktioniert nur für ca. eine Woche. Danach werden die gespeicherten Cookies der Ausnahmen rotzdem gelöscht!!!!!!!!! Warum ist das so????? Beim Microsoft Browser Edge Bleiben die als Ausnahmen gespeicherten Cookies über Monate bzw. Jahre erhalten!! Warum geht das nicht bei Firefox??

Every time I close Firefox, I lose cookies for banking, financial and news access requiring me to go through a lot of effort. re-establishing cookies with painful waste of time, I am hoping a change to the config files will override user settings that delete everything when firefox closes.

Failing that, can you designate which cookies are permanent anywhere in your application?

I am using Firefox (156.01) on a MacBook Pro (2023, M2 Mac Pro, Tahoe 26.7).

In Privacy and Security settings, I have checked the box to clear history and site data on closing. History is clearing, but site data is not. I can manually clear history and site data by going to the settings when I reopen it.

I noticed this issue about two weeks ago (not sure when it started). I have closed Firefox multiple times, restarted my computer multiple times, even updated my OS during this time, but the problem is consistent.

If I go to Clear Data for Specific Sites, I am also noticing that cache size is considerably higher than the sites listed (e.g., it might list 4 sites with a total of like 2MB but the cache size might be 30MB).

Do you have any suggestions for what might be happening and what fixes I might try?

Since FF 09/15/26 update manage cookies and data sites no longer will delete items. I click the 'save changes'. and that's it. All the cookies and data are still there. Hopefully a fix will be soon?

For some reason, everytime i close firefox, every website just forgets that ive been on their website before and needs me to sign-in again, even when ive clicked "keep me signed in"

In the past couple of weeks (say Sept 2026), Firefox has started signing me out of everything when it closes or updates even though 'clear browsing data' is UNchecked. What else can I do to stop this?