Firefox Community Forum

I am experiencing a weird scaling issue on one of my monitors with Firefox. The whole firefox window looks as if it's scaled to high resolution mode. Not just zoom of the content, but the whole window, including the title, toolbars, etc.

Note that only happens on ONE monitor (I've tried this on total 6 monitors now), and it happens only on one Firefox Profile. If I use a new profile, the issue is gone. However, if I copy the profile folder to the newly created profile, the issue comes back.

Here is a screenshot of the two windows opened at the same time on the same screen. Right window is normal, and the left window is the scaled up version.

https://i.imgur.com/ikq00DA.png

I don't want to re-create my entire profile if I don't have to. Does anyone know what kind of setting/feature did this and how can I revert it? Since it does not happen on a different profile, and is replicable by copying the profile settings, it must be some kind of a firefox setting somewhere.

After upgrading to version 144 in Windows 11, the portable version of firefox stopped opening, the splash screen appears and shuts down. If you run firefox.exe, it works, but the portable program itself crashes and won't start. There is nothing in the logs, antivirus is off, windows security is turned off. How to fix this?

with my barclaycard account, namely if you visit this URL:

https://bcol.barclaycard.co.uk/as3/UI/#/login/

and then click "Or log in using your 16-digit card number instead?"

then with the box to put the credit card number, months ago I put the wrong number, just one digit wrong,

and now every time I visit that URL the wrong number appears in the autofill box, I have removed all my cookies for barclaycard.co.uk, I have cleared passwords, I have done the lot and the same wrong autofill number keeps appearing! it is highly frustrating!

how do I stop this without completely uninstalling Thunderbird and erasing all stored data for all websites?

I feel there ought to be a button to clear all stored data of all description for any specific domain name, or a button to clear all data on the webpage you are at.

SOMETIMES WE ARE TRYING TO OPEN https://udyamregistration.gov.in/UdyamRegistration.aspx ITS OPENING BUT SOMETIMES NOT OPENING WE ARE UNABLE TO FIND PROBLEM PLEASE SOLVE THIS FROM YOUR END.

I'm having an issue in accessing a website & haven't before. There are 2 e-mail addresses associated w/my account since signing up for Mozilla. Just yesterday it changed after a download & now I'm getting 2-factor set up when accessing one website. Please advise if you have any ideas.

I have been using Firefox for years on my Mac Mini and MacBook Pro, sync has never been a problem.

Now I inherited a Dell laptop, after reinstalling Windows 11 I installed Firefox and logged into my account as normal, and then switched back to using my Mac Mini. The next time I closed and then later reopened Firefox on the Mac Mini, Firefox had logged me out of every website, forgot my entire browsing history, passwords, bookmarks, everything. Its all gone with the exception of 4 of my 16 links on Firefox Home.

So I spent an hour fighting MFA, etc. on the websites I use the most, only to close Firefox and have it log me out and forget everything again. That is now its behavior, it loses everything every time I close the app. It does remember my toolbar settings, and those same 4 links on Firefox Home. i rebooted the computer and the problem remains.

Firefox is still logged into my account, it just doesn't sync or remember anything. Doesn't save cookies, history, nothing. Every time i relaunch the app, Firefox home is back in its default state

I also still have an instance of Firefox open on my MBP, I am now deathly afraid of closing the app for worry it will do the same. I also am afraid of using Firefox on the Windows computer, I absolutely cannot break this more.

How do I fix this this quickly and prevent it from ever happening again? I am getting absolutely buried in computer problems at every turn right now and nothing's getting solved. Every fix for weeks not only fails, but inevitably creates a new problem and I'm sorry but I'm going a little crazy and I really need a break.

Thank you.

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?

I'm unable to login to account.apple.com on my laptop which is running Ubuntu 24.04.3 LTS.

I've launched Firefox using the `-p` option, created a new profile and then navigated to https://account.apple.com/sign-in and tried to login. I've attached a screenshot of the error message.

I had tried multiple things on my default profile, even troubleshoot mode, but I couldn't get it. I even tried useragent switcher to no avail.

I can login to the site using Chromium.

What else can I try?

I inadvertently installed 142.0 for Mojave 10.14.6- by mistake and now it starts up in the version 142.0 (which is not for Mojave 10.14.6) when I click on a link - I get an error and a log. I just open the correct version 115.26 everything works fine and I just have to copy and paste the url. I trashed everything my Library - Firefox folder and Mozilla folder- emptied the cache, history and cookies. Reinstalled Firefox from the Mozilla site, but to no avail. Hitting a link starts up in V. 142 and Firefox quits and throws an error log. What do I need to trash so this does not happen. Thanks

The box to uncheck "automatically trust 3rd-party root certificates" is greyed out, and I cannot turn it off. I do not want to automatically trust 3rd-party certificates. How to turn this off if box is greyed out?

I even tried to use the address bar suggestion to turn the "true" value to "false" but as soon as firefox reloads it is reset, & the way to stop that is greyed out.

Firefox is also saying "we've detected unusual traffic from your browser" every time I search, so I am concerned.

I was prompted to install a .js file while on a website unrelated to mozilla organization. I was taking a work call and distracted at the time and was dumb enough to install it before I realized this was not a normal update. Should I uninstall and reinstall firefox? My McAfee blocked the script from "trying to hijack one of [my] apps"