Firefox Community Forum

I hit the "Clear Private Session" icon, confirm, but then I have to go to:

Open Settings >

Privacy and Security >

Browsing Data >

Clear Browsing Data >

"Everything" (every check box has to be checked) >

Clear.

I have Firefox in permanent Private Browsing only, and Privacy and Security Settings are set to Strict / Do Not Fix any site problems.

Why does Firefox retain browsing site data even after I exit out of Fiirefox completely unles I do all of the above?

Up until 6 months ago I was easily able to access all my bank accounts on line using Firefox. I can still access others but not Capital One 360 on line banking. When I try to access Capital One I just get the message that " there has been snag and to try again" which does not work. So I can access my Capital One account only thru Google Chrome. Capital One says that the reason is that Firefox does not update their security setting to the level they require. Can anyone tell me if this is the problem or if there is some other reason why I can no longer use Firefox to access this account.

Hi all,

I have a question regarding the permission requests of the Simple Tab Groups extension by Drive4ik.

As I'm sure many of you know, this extension needs to: This add-on needs to:

• Download files and read and modify the browser’s download history
• Monitor extension usage and manage themes
• Display notifications to you
• Access recently closed tabs
• Hide and show browser tabs
• Access browser tabs
• Store unlimited amount of client-side data
• Access your data for all websites

This add-on may also ask to: Read and modify bookmarks

Theoretically, I find this extension useful but I am concerned about the "Access your data for all websites" requirement. I read through Mozilla's permission request messages for Firefox extensions documentation and it seems like granting this extension these permissions would be a huge risk for the work I do– investigative journalism. It seems like I'll trade organizational benefits for a wider attack surface.

Can anyone speak more about the risks involved with using this extension, the trustworthiness of the developer, and why it needs the "Access your data for all websites" capability?

Thank you.

Now that Mozilla/Firefox have joined Google on the dark side, who is everyone switching to? I would like something that works well in both Windows and android. I hear Opera can't be trusted and I don't like how there are like 6 difference versions of Opera in the android app store. DuckduckGo is just badly made IMO. Edge causes some glitches with one of the sites I use most. Should I try Brave? I just want a browser to BROWSE the web. I don't want AI. I don't need a VPN or adblock built in. I don't want a "gamer" browser. A decent local password manager would be nice but I don't want to have to make an account to use it. I know if the product is free, you are the product, so I would almost prefer a browser you pay for but oddly that doesn't seem to be a popular option. Probably because the user data the companies collect makes them more money then people would be willing to pay. Sad times. I miss the 90's.

Recently transferred from Chrome. My understanding was Firefox private browsing was supposed to work similarly to chrome incognito mode; once you close the browser, all local files are deleted and cookies are cleared.

However, with Firefox it maintains my logins. If I log into an account while private browsing and the close the browser, I’ll still be logged in next time I go to the website even if it’s days later (and I have never logged into this account in a non-private browsing window!)

I never had this issue using chrome incognito, so it seems to be a Firefox problem.

Is this just not something Firefox supports? Is there any way to prevent storage of cookies and private data?

Having spent a frustrating weekend being unable to log into Coventry Building Society's online banking app, I phoned them this morning to be told they consider Firefox insecure and no longer support its use. The app accepts my username & password, tells me they are going to 'phone me with an access code' and then displays "Page not found". Anyone know of any other bank or similar who would believe Firefox to be insecure?

I have a question about using Firefox PDF Editor. I copied some text from a PDF document that is on my computer, by highlighting the text and then hitting Ctrl+C. The text copied onto my clipboard OK. Then I opened a blank PDF document in the Firefox PDF Editor and tried to paste that text into the blank document, but I wasn't able to do so because when I right-clicked on the blank document and then clicked on "paste", nothing happened. This apparently is because the word "paste" is faded-out in the drop-down menu (i.e., it does not appear in prominent bold print). Google's Artificial Intelligence seems to indicate that the technique I used would work (see screenshot which I've uploaded). But it didn't work, so can anyone please tell me how can I paste text into that blank document?

I have telemetry (every checkbox under "Firefox Data Collection and Use") disabled, but noticed that the datareporting/archived directory contains telemetry files. Is this expected, or does this indicate a bug that shows that telemetry is being sent?

The file paths have the format:

<profile dir>/datareporting/archived/2025-09/<unixtimestamp>.<uuid>.main.jsonlz4 <profile dir>/datareporting/archived/2025-09/<unixtimestamp>.<uuid>.events.jsonlz4

I am on endeavourOS (linux). Whenever I try to upload images for a profile picture to sites like youtube or X, the image becomes corrupted and doesn't upload correctly. It did this with whatsapp too and I had to use a separate app for it. Other posts said that disabling "privacy.resistFingerprinting" would fix it, but it's already disabled.

Attached below are an example of this bug and the contents of this image when viewed on a text editor.

I want to create a list of allowed web sites in settings/cookies&data/manage exceptions, but it seems I have to enter each site MANUALLY. I would like to do this more quickly and easily by just selecting sites in the "manage cookies" list and designating them as exceptions. Or is there already some other way to do this that I haven't found? Also, after I have made exceptions for all my important sites, by whatever means, can I assume that I can press "delete all" in the "manage cookies" list and the allowed sites will not have cookies removed? What happens to exceptions if I select "delete cookies and site data when Firefox is closed?" If there is no way to make exceptions other than manually, I respectively request that some convenient method be added to the program. Thanks for any response.

The page https://support.mozilla.org/en-US/kb/ai-chatbot lacks the list of data shared with the chatbot AI providers. It would be nice to know how it is done, how to review the data, and how pages can provide better data.

It has been working fine - now I get this message:

'We've detected a problem with your cookie settings. Enable cookies

Make sure your cookies are enabled. To enable cookies, follow these browser-specific instructions. Clear cache and cookies

If you have cookies enabled but are still having trouble, clear your browser's cache and cookies. Adjust your privacy settings

If clearing your cache and cookies doesn't resolve the problem, try adjusting your browser's privacy settings. If your settings are on high, manually add www.google.com to your list of allowed sites. Learn more'

I've tried making Google an exception, to no avail.

I have all options enabled to save addresses and credit cards.

When I try to manually add a credit card, hitting the Save button does nothing.

When I use a credit card on a site, Firefox prompts me to save the card, I confirm that I want to save it, yet it isn't saved.

I got an email supposedly from breach-alerts@mozilla.com that claims there are currently 3 data breaches and has this link to resolve: https://blrv1ly5.r.us-west-2.awstrack.me/L0/https:%2F%2Fmonitor.mozilla.org%2Fuser%2Fdashboard%2Faction-needed%3Futm_source=monitor-product%26utm_medium=product-email%26utm_campaign=monthly-report-free-us-scan-no-exp-yes-breach-resolved-no%26utm_content=resolve-exposures-us/1/01010195ceba1024-6e3f74fe-119a-4e2e-9033-398671a830d9-000000/DDeGOTLjROOXCCk2fJvXJbdefc4=419

This seems like a phishing email, is it legit? Should I find another browser?

I have been watching YouTube for years, issue free. This week I was blocked, as my computer may be blocking ads and thus violating You Tubes policy. How can I find and disable ad block programs/ extensions, thus allowing me to get back on You tube. I can recognize an outright program, but do not knew if extensions are in play that are not obvious to me. THANKS

Hi I am a long time user of firefox because i love its customization and tools available to help me with my work and personal life. Recently i have been ordered to remove Firefox from the company laptop as it was deemed insecure by the IT and security department. I have been told to use MS edge and Google's Chrome. Their reasoning is "An inconsistent comparator in xslt/txNodeSorter could have resulted in potentially exploitable out-of-bounds access. Only affected version 122 and later. This vulnerability affects Firefox < 136 and Firefox ESR < 128.8." I do not know what this means. Is there something i can tell my IT department to argue against the directive to only use either Edge or Chrome. Best regards, F Silva

When I visit the web site virtueonline.org using Firefox browser, the Disqus comment section does not appear below articles on the site. Sometimes, when I go in and out of the article, the Disqus comment section will appear, but not always. When I use Microsoft Edge, the Disqus comment sections appear.

Everyday I get pop ups usually for car parts, all for ICE cars and I have an EV these days . . . . . Please stop sending them. Is that possible? Regards, [edited email from community support forum]

Suddenly getting endless warnings from Mozilla/Firefox (with McAfee-like logo) warning of major virus contamination of laptop. "Click to delete immediately" has no effect. Suggestion to run McAfee scan show 5 major problems but McAfee profile says account paid thru August and no breaches in last four years. Says too soon to renew. How can I clear the problem if there really is one? D.

I have recently discovered that Firefox is constantly sending data at around 3KBytes/S to a variety of Cloudflare servers.

What is the data that is being sent and why is this happening?

This has started to occur in one of the last updates to Firefox.

Currently running 151.0.4 (64-bit) on Windows

Does this constitute a privacy violation, what is the data that is being sent?