Firefox Community Forum

For no apparent reason, all Firefox 140.0.4 on Windows 10 crashed and when it was relaunched it did not restore any open tabs, reverting instead to the home page. All history is gone, no previously open tabs are windows appear in the history list. This computer has syncing enabled.

I used about: profiles on the Win 10 machine and it only shows the one that is currently in use. I copied the 2 files found in the along with places.sqlite into a temp directory. I did a search for index.dat and it is not found on the Win 10 computer.

Even worse: another computer running Win 11 that is syncing with the Win 10 machine is also now missing its history. Is there a way to recover from this?

Note: I am generating this from the Win 11 machine, not the problematic Win 10 machine.

Several web sites say that they detect this ad block on my pc , but I can not find it through my pc sites. It seems to be kind of a worm that can not be disabled. I am using Firefox.

About two weeks ago, Firefox started randomly hanging and would stop responding. It wouldn't let me close the program and I always have to restart my system to resolve the problem. Sometimes it only takes a few minutes after restart before it hangs, other times it will be fine for hours.

I've tried multiple solutions I've found online, carefully following instructions: clearing cookies and cache, disabling all extensions, refreshing firefox, creating a new profile, deleting specific files within the Profiles folder, etc.

I've yet to make it more than four hours without the program hanging.

Any assistance or suggestions are greatly appreciated.

There is one particular website that I use quite frequently. Lately I haven't been able to log onto it without encountering a page verifying I am a human, and I can't proceed (the page just loops). This has happened on other browsers too, though I fixed the problem there by disabling my adblocker. But that doesn't help here on Firefox. Any suggestions?

According to this article I should be able to activate autofill credit card details in my country https://support.mozilla.org/en-US/kb/credit-card-autofill But the option is no where to be found and in about:config I can see it is restricted to a few countries mine not being one. I can not change the list with countries either, actually I can not change anything nor search in about:config. I am running Firefox 140.0.4 (64-bit) EDIT I made a a master password, which then made it possible for me to edit in about:config. I added my country to the extension and now I can activate it.

To view my Firefox browsing history, I click the three horizontal lines icon (in the top right corner of the window) to open the Menu panel. I then click History then click Manage History.

How can I make the font larger?

(Ctrl++ does not increase the zoom-level) (Zoom does not increase the zoom-level)

I have a desktop PC Firefox 140.0.4 (64-bit) Windows 11

In May 2025 all browsers should have removed the default styling for the h1 element when it is nested in a sectioning element (article, aside, nav, section). I went into Firefox Dev Editions user-agent style sheet and noticed that the styling for nested h1 elements is still the same. I'm wondering why that is the case, since I was under the impression that all the major browsers had completed make the necessary adjustments at the end of May 2025.

Hello,

I am having an odd issue where I see flickering bands of cyan/purple blocks whenever I scroll on a page with some video embeds. At first I thought it was related to refresh rates (240hz) as some pages flickers but it occurs at 60hz as well.

2560 X 1600 Resolution with 125% windows scaling

Steps to reproduce: 1) have settings above 2) navigate to https://store.steampowered.com/ 3) view a storefront with a video embed 4) zoom to 180% 5) scroll up and down past the video

Specs: 64GB Ram AMD RYZEN AI 365 Geforce RTX 5080

I use scoop to install firefox. then i changed the default profile to the Scoop profile. Then i tried to log in the mozilla account but it keep saying that it cannot continue because cookies or localstore are disabled. Then i checked the about:support page like i said in the titile, many configs are blank. Maybe some problems with the profile i guess. I also opened a issue in Scoop githup repo, they cant reproduce my problem. Where could go wrong? Any help would be appreciate!

And this is the issue i post on github https://github.com/ScoopInstaller/Extras/issues/15770

I'm an older pensioner, I've no wish to learn more tech stuff which is unconnected with my question. For years I've been concerned at the invasive nature of Microsoft products and so want to get rid of Win10/11 and install another OS. (I have hundreds of documents in Wordpad (.rtf) and MS are just cancelling it!) It'll probably be Linux based. So, simply I want to take my existing Firefox browser with passwords etc., to my new OS. I asked this question in Firefox and it seems Mozilla can't get over the fact that I don't want change my iOS browser to a synched up Firefox. I don't want my phone connected to my pc. Perhaps that is difficult for today's tech whizz-kids to understand but I can't help that. I'm not really technical but have had Firefox for nearly 30 years, so can anyone tell me if it's possible to copy my Firefox into a folder somewhere perhaps, and reconstitute it to work with my new OS? It certainly used to be possible. Thanks.