Firefox Community Forum

For the last three days or so I have been haivng problems with loggin in to sites. I no longer log in automatically to my many of the sites I use, particularly those set for my home page such as IMDB.com, ebay, web.whatsapp.com etc. Everytime I restart firefox I have to log in again. This started I think wit hthe latest update 155.0.1 (my current version) installed 5th sept 26 or 155.0 installed 3 sept 26

It doesn't seem to be reading the cookies that exist. I have it configure so all cookies are cleared on exit except those in the exception list, which are those for my home page plus about 30 others I log into. There is definitely cookie data there for these sites. I hve tried everythinig but this clearly seems to be a bug. at the moment I am using Opera since the necessity to keep loggin in to every site every time is just too much.

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?

Hello! I was just flushing my cache and i saw this number... o+I'm just curious how that could be possible? And where has those data been stored? I don't have that space...

As has been mentioned many times before I am sure, it would be really helpful to be able to have a less laborious way to add exceptions but as I have been through the ridiculous process of typing in site addresses manually one by one without having any sensible way to record these addresses already I guess it won't help me now. The ridiculous aspect came from having to take screen shots of the list of sites from the manage data list after deleting everything not wanted, scrolling down a windows worth at a time, copying that screen shot into multiple copies of a graphics program then shrinking each copy of the graphics program and Firefox so each can be seen so I can manually type each address across.

I know I am supposed to be nice but this is just insane. It is 2025. There is a thing called copy and paste. Apparently some people at Mozilla are not aware of this.

Having got that off my chest the next issue is that the deletion of cookies and data only occurs when Firefox is closed. Who closes Firefox? Why would you close Firefox? I currently have 24 tabs open. Why on earth would I want to close them down just so they have to be selected one at a time and reloaded? What is the thinking behind this stupidity?

The only time I close Firefox down is when Windows is restarted for updates (every application) or when IDM needs to update as I found this negates the need to restart Windows (Firefox only).

Other than those situations I am trying to work out how to fit this cookies/data deletion into the normal operation of my computer. There appears to be a lack of a suitable way to deal with this situation. Would it be considered acceptable to just wait for those times Firefox has to be closed? This would be far better than what I have been doing up to now but why wouldn't Firefox delete this data when the last tab for a site is closed? There are a huge number of sites I bring up due to searching for something and close them immediately or after reading what they have to say.

I have been using computers for about 30 years and have long lost the inclination and to be honest the ability to delve deep into them. Today I just want to have them do what I want/need without unnecessary complications.

Have I got this situation right or is there something I have missed? At the moment IDM has been having a lot of updates thanks to YouTube's greed but before that I found I generally only had to restart my computer for MS updates and when strange things started to happen.

Hi Je suis utilisateur donateur Mozilla et Thunderbird.

Comment vider les mémoires cache automatiquement en quittant MOZILLA sous WIN11 ?

(sans faire Param/Vie privée et sécurité/ Effacer Tout Historique et vérification avec about:cache)

Best regards

I saw a very confident by a 'support volunteer' that the interface contains controls to delete traces.

Show me in the in interface where these files can be deleted:

C:\Users\User\AppData\Local\Mozilla\Firefox\Profiles\0NB2KS6j.Profile 1\cache2\entries

C:\Users\User\AppData\Local\Mozilla\Firefox\Profiles\0NB2KS6j.Profile 1\safebrowsing

Some very bold claims that I don't see backed up by anything having to do with reality.

Hello, I wanted to ask about this new site permission.

I previously used the "set cookies" permission for specific sites to keep their data after closing Firefox (Dev Edition), but now we have this "keep site data when closing" permission, can I just rely on this new permission instead? I should probably test it, but I wanted to ask first :p

Was I using the "set cookies" permission incorrectly this whole time?!

Thanks, +-

I have FireFox set up to reset every time I start a new session which causes DuckDuckGo's AI search to reset every time. Does anyone know how I can set it so it doesn't do that? It's annoying always having to disable to every time I open a new session.

When I try to log on to a particular web page using my password, I get an error page. When I do so using the Private browse function it works. Following is the error I get: {

 "callId": "019a1701de257ed0a722da6257f2896e",
 "errorCode": 403005,
 "errorDetails": "Unauthorized user",
 "errorMessage": "Unauthorized user",
 "apiVersion": 2,
 "statusCode": 403,
 "statusReason": "Forbidden",
 "time": "2025-10-24T16:16:29.758Z"

}

Does anyone have any great ideas??

With the new organization of Settings, my list of cookies has disappeared. I was trying to delete cookies from a specific site, but when I go to that option in "settings," there is no list of cookies.

I have tried restarting both Firefox and my computer and the list is still missing.

Any suggestions on getting it back?

Since last week there is a cookie that I can not remove in the Manage cookies and website data panel. It is called about.ef2a7dd5-93bc-417f-a698-142... There is probably more but that is not shown in my view. How can I remove that?

In Firefox, I have several windows open, each with many tabs. (And BTW, I love the Firefox tab-organization feature.) I would like to empty the cache and delete all cookies. Will that close the open tabs? Is there a way to delete the cookies, empty the cache and preserve all windows & tabs?

      Thank you!

I usually have checked the option for clearing cookies and site data every time I close Firefox. However there is an exception list where I add sites I visit often and I prefer to keep its browsing data. This list of exceptions seems to be ignored. The sites I have in the list lose all their browsing data.

The only solution I have found so far is not check the option to clear browsing data.

I remember this function stopped working correctly right after I decided to wipe all browsing data manually.

When i logged into a privacy session on a website the account did not automatically log out when i closed the session. I checked again by purposefully ensuring i closed all privacy windows but when i went back to the sight i was still logged in. I had to specifically log out the account.

Has something changed with the setting? This was one of the features that i liked. I don't want to find a new browser because what i expect is no longer happening.

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!