Firefox Community Forum

When I try to log into twitter (X) I get a pop up saying I'm blocked due to suspicious log in activity, that I have tried to log in too many times. I had not tried to log in for days. I do not get this message and can log into X on other platforms, including chrome and Edge. I prefer to use Firefox. This started happening after I uploaded the newest Firefox upgrade on 3/3/26, I run windows 10.

...and getting this message.....Bad Request Your browser sent a request that this server could not understand. Size of a request header field exceeds server limit.

So before few days firefox decided to automaticly update. after thet no pasword was saved in system. undery system data 2 files: logins.json-1.corrupt/json-2.corrupt without any data in files (but size is 130KB). i need these logins ASAP.

Several days ago Firefox deleted all of my saved passwords. When I built up a new list of saved Passwords, they are all deleted and gone the next day. Why is Firefox doing this?

I decided to try exporting my Facebook Messenger E2E encrypted chats, however I keep running into a variety of problems, because the process is simply badly written. By default, the process breaks when the website local storage data reaches 10GB - that is, as far as I understand, a Firefox limit. There is still plenty of RAM and disk space remaining. When the local storage hits 10GB, you get a "Quota exceeded" DOM Exception.

To get around that, I've changed browser.cache.disk.smart_size.enabled -> False browser.cache.disk.capacity -> 50GB (values in KB of course) dom.storage.default_quota -> 25GB dom.storage.default_site_quota -> 25GB browser.cache.disk.max_entry_size -> 256MB (seemed like some larger files were missing, like longer videos)

However the process still breaks, although I'm unsure if it wasn't a soft-limit by Facebook the last time (since it stopped downloading around 8,5-9GB, earlier than in previous attempts)

Are there more settings that could be limiting the export apart from those mentioned? I understand this is pushing the browser over the reasonable limits, however I still hope it is possible to override them for that one-off situation before reverting to defaults.

i have 4 accounts on firefox and i cannot remember which account i have been used through years now i cannot sync my old data however i have tried the 4 emails and accounts i used and non of them is working

how can you help me

The main reason I use Firefox rather than Chrome or Edge is because Firefox allows 32 home page shortcuts. I configure my home page with all 4 available rows of 8, pinned in position so they are grouped based on function, along with putting the home page icon on the toolbar. On several occasions these have disappeared and the 'popular sites' do not load. I have had to use Control Panel -> uninstall program to 'fix' Firefox; this causes all my shortcuts to disappear, along with the toolbar 'home' icon and '4 row' display. I am running Windows 10 Pro, and will be migrating to Windows 11 Pro on a new computer. Will this issue be fixed with Firefox running on Win 11? Is there a way to easily save my home page settings so that if they disappear I can reload them? Thanks!

A while ago when using the setting firefox noticed that i was using a vpn and turned the settings off. At least that was what i believed. Turns out, that only works with browser vpn addons that use the firefox settings. But these addons do not use wireguard, but tls to encrypt your data. If i use a vpn, and want to use the dns settings provided by them, i have to turn of the feature the dns over https feature from firefox. I only want to use that feature, if im not "protected" by a vpn solution of my choice.

Is it gMail or Mozilla that is slowing down the time for gMail to open a new Message? My internet connection is consistently between 200-300 mbps. Also, how to I change the email address on my account? Or should I just start a new account? Thank you.

when attempting to login to 53.com credentials are entered, login pressed, login flashes but no login.... as if there is a pop up or something that should occur and doesn't. On edge it works fine, press login and a clock like symbol overlays the login button and then you are in....

I need to uninstal firefox because it is not opening, keep getting message to first close firefox !!! I can not close firefox because I can't get it to open in the first place.