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I am used to having a Firefox for my personal Mozilla account, bookmarks and sessions, and Firefox Developer Edition to be logged in my work account, where I could use everything I need to work in a separate environment.

Recently I changed a job. Logged out past-job@mail.com from Firefox Developer Edition, logged in with present-job@mail.com and... I still can see old bookmarks.

- I cleared history and new bookmarks: nothing
- went to about:preferences#privacy and clear all the data: bookmarks still there
- tried Help > More troubleshooting information > Refresh Firefox…: all the same
- reinstalled firefox@developer-edition with brew: nah
- eventually, logged out from presetn-job@mail.com in Firefox Developer Edition and personal@mail.com in Firefox; uninstalled both, deleted everything related to "mozilla" and "firefox" was able to find in my system: unsuccessfully

The last thing I didn't try yet is burning my laptop in favor to a new one.

Where are those bookmarks? Why nothing is helping?

Is it possible to make a donation to Mozilla without providing so much personal information? I got a message on Firefox today asking for a donation, but when I tried to do that, I was asked for my home address. It's a general rule of internet marketing that people who use the internet would rather do anything than pay for something, so it's bad psychology to impose unnecessary conditions when you're asking for a donation. I don't have to provide my home address when I make donations to other organisations, so why does Mozilla need my home address? I apologize if this is the wrong place to ask this question, but I can't find anywhere else to ask it!

Thanks,

Shaun.

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Release Notes tell you what’s new in Firefox. As always, we welcome your feedback. You can also file a bug in Bugzilla or see the system requirements of this release. 143.0.1 Firefox Release

September 19, 2025 Version 143.0.1, first offered to Release channel users on September 19, 2025 Fixed

   Fixed a tab crash experienced by some users caused by DLL injection. (Bug 1872261)

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When I am scolling and the mouse hits an image, a large image preview appears. How on earth do I turn this off? I can see tab preview images to turn off but not this stupid image previre thing that covers everything I am trying to read or navigate on the web site.

Thanks very much M

Hello, After performing a clean install of the OS, I logged in to my firefox account. But it is not syncing the passwords. I tried installing firefox to my phone, also not syninc. I think btw, it is syncing but my passwords are not there. Here is the log: https://pastebin.com/DH0wuERM Any help appreciated, because there were more than 200 passwords there. Thank you

I've used Slack every day for the past decade, and Firefox has been my primary browser for some time now. I've never had an issue with the two, but now, Firefox is reliably crashing every time I attempt to open Slack.

I've tried clearing my cache both broadly and specific to Slack, with neither producing results. Even tried deleting all cookies on Firefox, which was a bit of a pain, and it was no help.

I did read up on some people encountering a similar issue that could be fixed by deleting the Slack entry in "about:serviceworkers," but this did not help here.

The only extension I'm running is uBlock Origin, which I've been running for probably as long as I've been using Firefox, and that has never presented an issue before either.

Would appreciate any help or advice on the matter.

hi in a new win 10 instal most text incl Fire Fox text is made up of letters [font] that are made of thin and thick lines [in the same letter]

i dont know if its a strange font or another problem, i have copied all "font" setting from my other pc where i dont have the problem.

also i cant get spell check to work here dsespite turning it on

its very distracting, would be very gratefull for any suggestones if any one can 

help thanks

Windows 10, latest version.

I hit a shortcut, I think, and heard the trackpad, then one of the three open tabs was isolated from the rest in a separate, almost chromeless window.

It's not in the taskbar pop-ups but instead has its own icon. In this 'chromeless' window there is no option to add a tab or window, there is no area to move it (I have to carefully use emtpy space in between buttons to move it). The top just fell off, that's basically it.

I have never seen this and have been using Firefox from the start way back when. I didn't install anything; this just happened as I was reading something and accidentally touched a key. Nothing changed, no settings were adjusted, nothing.

This option is not in the tabs menu or anywhere. I must say I kinda like it for this one 'tab' (which is a solo chromeless window) but I do need the menu and so on for productivity.

One of the screenshots shows this 'window', the other shows that 'window' is not part of the regular pop-up tabs in the taskbar but rather has its own icon, as if it were an app, in that taskbar.

What in the world is this? Can someone help?

I have various shortcuts saved on the shortcut page comes up after logging in. Its set to 2 rows.. I use it every day. Used it this morning and working perfectly. Been out and when I came back the page is totally blank. I've tried sytem restore to 5th October but makes no difference. I use Windows 10 and read that Firefox are continuing to support Windows 10 I'm visually impaired and use a desktop PC with a large screen. I'm not PC techically knowledgeable. How do I restore my shortcuts or how do I re create them?

Each day I get an email from Microsoft OneDrive with photos of the day, titled On this day"'. Clicking on a button titled "View all memories" on the email causes the photos from that day to appear as a new tab on Firefox. Perfect. Until a couple of weeks ago.

At that time, clicking on it caused the new tab to appear but no photos are displayed. The screen looks as if it's trying to load the pics, but nothing shows up. When I open up the OneDrive website directly, I can click on "Photos" and see ALL photos in my cloud account, and there is also a row at the top under the title "For You" which shows several clickable buttons titled "September <XXX>", "A new trip", "Revisiting <month XXX>", "Last week", etc. Clicking on each of those separately yields the same result as when I clicked on "View all memories" from the original email, which is that nothing is displayed but it appears to be trying.

Below the "For You" row is "All Photos" sections which has everything, but not organized like the "For You" row. It simply is the entire set of my pictures from which the "For You" buttons do their selection from.

I exchanged emails with the MS OneDrive support over several days, who made numerous suggestions, but none worked. We did determine, though, that the photos do appear seamlessly if I switch to Edge as the default browser, but I want Firefox as my default.

Because the photos did appear under a different browser, they suggested I contact Firefox, which I'm doing. And this is after I've tried all the suggestions contained in a google search I entered as: "firefox setting to allow microsoft onedrive photos of the day".

Understandably, I'm very frustrated and appreciate any suggestions anyone can provide. Thank you.

I am 81 years old, ad not a tech genius, but I can no longer access my memory photos that microsoft one drive sends me every day. It did work before, but now I get a blank screen. Microsoft help tried the edge system, and the pictures came up, but on firefox, I now get a blank screen. I do not want to change browsers

I opened Firefox this morning and all of my pinned shortcuts have disappeared. Shortcuts are enabled in the settings. I checked the browser.newtabpage.pinned pref on the about:config and all of my pinned shortcuts are still there, but they're not appearing on the actual page itself. Are there any other settings that I'm not aware of?

When trying to access many popular websites with Firefox on my Fedora 43 installation, I am greeted with a security warning page with the SEC_ERROR_UNKNOWN_ISSUER error. For most of these websites I can simply accept and continue, but HSTS-only sites will not permit this.

Affected websites include but are not limited to (based on exceptions in the certificates section of Firefox settings):

• github.io (many subdomains)
• purdue.edu (many subdomains)
• iu.edu
• ebay.com
• cbsnews.com
• iwm.org.uk
• home.cern
• celestrak.org

Any help in resolving this is appreciated.

The weather widget on my FireFox homepage, as well as the information when I type "weather" into the address bar shows me as in Montreal QC, Canada. But I am in New Hampshire, USA. When I try to type a different city name after clicking the 3 dots next to the widget and choosing change location the only cities that come up are Canadian cities.

I am not running any kind of VPN, and when I check my location with an IP lookup it shows me in the correct location, my locale settings in Windows are set the the US as well.

Thanks for any help!

The AccuWeather part of the Firefox homepage says I'm in Portland, Oregon, USA, but I'm not even in the same country. I tried to change it according to the directions I found earlier, but the only drop-down for my city was another city in the US but none in any other countries. So now I can't change my location. How do I change my location? It wasn't like this yesterday and I have no memory as to how it became "Portland, Oregon" since last night. I don't even have a VPN so it isn't that. How do I change it back to my area without using my exact location?