Firefox Support Forum

Hi folks.

I use Firefox a lot. I have about 36 windows of firefox open and some of those can have a LOT of tabs on/in them.

I have recently "evolved" to using a computer monitor. Before then it was an old flat screen TV - 1336 x 768 resolution (there about).

Now I have a 1080p monitor and things are different.

I use Node-Red (dashboards) and they took a beating with the new size.

I've set THOSE tabs to 133% magnification - and yes that isn't the correct size to emulate the TV. But I only thought of doing this a fair way down the track of trying to rearrange the layouts. (MY MISTAKE)

But I realised that at least not too long down that rabbit hole.

So that WINDOW is set to 133% zoom. But just now I tried to zoom out of another tab on that window and realised that the zoom on the other tabs is changed too.  :(

Am I missing any tricks? I know I could move THOSE tabs to a whole new window and that's that. But in the bigger picture I just want to check.

Hi,

Because numerous things did not work with version 116, I downloaded previous version of the browser and installed it. When it started it said something like "you are trying to use the previous version so some things may not work, would you like to create a new profile?" and there was a choice "yes" or "exit". So I chose "yes" - because how creating a new profile could mean something bad? But it did - it deleted all my bookmarks and settings. I have used mozilla for years, everything was in it. How to restore the bookmarks and everything back? It, by the way, upgraded itself to 116 anyway.

I am using Windows 11 and Firefox 116.0.3. Some characters like ‘ ’ “ ” — become weird symbols in Firefox when I copy and paste text containing them to html source text file. This started happening earlier this month, never happened before. Why is this happening now?

Since the FF update to 116.0.2 (64-bit) I am unable to save images from a very specific part of Ancestry.com. The database is the U.S., School Yearbooks, 1900-2016. All of the other image databases on Ancestry download without issue, and I am able to download the Yearbook images using Edge, so this appears to be a Firefox issue, especially as it began immediately following the most recent update.

The Yearbook images do differ from the others in that you are given an option to download two images as a zip file, or just a single image, but neither option results in the Save As dialogue appearing, and the images do not download anywhere.

This is a very strange issue, but maybe someone familiar with the most recent update could have some insight as to what has been changed that might have this impact.

Windows 11 Version 22H2 (OS Build 22621.2134), if that makes any difference.

I am unable to sign into Costco.com using Firefox. I get an error message:

    "Bad Request - Header Field Too Long
    HTTP Error 400. A request header field is too long."

Turning off all extensions didn't help. Opening a private browsing window DID work. Using Chrome DID work.

Thanks!

Task Manager detail line can be expanded to show multiple open tabs, and I can sort display by CPU but that doesn't help me identify WHICH SPECIFIC tab is using high CPU. Are there any tools to help me quickly identify (and perhaps End) such high CPU tabs/processes? Thanks!

When I scan the QR code shown on my computer with my phone and press the sync buttons, I get a message on my phone to; "Open the authentication app and enter the security code it provides."

I have no idea what this app is or where to find it to open it. Is it on my phone or my computer? Why can't you just show the code on my computer sync screen?

And, your help pages just repeat the same instruction verbiage as the sync app on my phone. No additional help at all!

Since a week or two my Firefox tabs are crashing more and more often. At work on MacBook and at home on PC.

Deleting the cache and cookies and even starting in Safe Mode are not helping - in fact while writing this very message had 5 crashes meanwhile!

Don't know if you can access the crash report: https://crash-stats.mozilla.org/report/index/4cd570db-d90d-4fcb-aee6-0a1660230818

All of a sudden this morning Firefox is displaying pages (my purchases on Amazon) in Times Roman font. On other sites, I hover over a link which should be active, but clicking does nothing. YouTube doesn't play, just hangs with the in progress circle spinning. Anybody know what can be causing these issues? I've rebooted my Windows 10 laptop several times, but I can't Firefox to work.

Thanks for your help.

According to this support page (https://support.mozilla.org/en-US/kb/sync-custom-preferences#), setting ``services.sync.prefs.dangerously_allow_arbitrary`` to True will sync all my preferences.

I have set it to true on the two devices I want to sync (2 desktops, Windows and Ubuntu). However, the preferences are not synced. For example, ``browser.compactmode.show`` keeps its default value "False" on my Ubuntu installation, despite it having the modified value "True" on my Windows installation.

I have tried pressing "Sync now", and restarting the browsers - to no avail.

Could anyone tell me what am I doing wrong?

This is a many years old account/install with Netscape/Firefox, now 116.0.1, 64-bit Windows.

When offered a box for email step 1 login -- this site, for example -- FF auto fill offers my correct address first, but then there are two offered below that in the auto fill offers that are not mine.

How can I access where those are stored and remove those erroneous or mal email addresses?

Searching here infers the Profile; yes, my first guess, but my Profile is 725 MB ... so any hints available?

My M-1 MacBook Pro has been running warm since I installed Firefox 116.0.3 (64-bit).

EtreCheck Pro reports that "plug-in container.app" is a runaway process.

When I show package contents for Firefox, I can see "plug-in container.app" in the MacOS folder.

Will there be an update soon to correct this problem? Firefox is my primary browser. I work in the SaaS industry and have to run a browser 24/7.

Hey, since 2 months firefox started crashing when a video comes to the end. I tried it in troubleshoot mode skipped to min 10:45/10:50 and played. after this 5 sec it just crashed. I noticed it on youtube but tried it on other players and it also happened. Today I also started a video on a other website and it crashed but not when starting youtube videos.

Here my last 5 crash reports: bp-8fdedc8b-c8bc-404f-9e3e-8f2fd0230813 bp-b15becdb-456b-4a22-971c-2c0c20230813 bp-9754361a-f67b-445a-9163-c88a20230813 bp-cffc46ae-9ae5-4678-a323-7b60b0230813 bp-a863679a-577e-45f4-9f4e-002bc0230810

Best regards, Michal

Hi. I have a Mac running Ventura. I have done a fair amount of searching but can't seem to find instructions on how to add extension shortcuts to the toolbar. I feel stupid asking this question as I have added them previoulsy but just don't remember how it was done.

Whenever I try to open Firefox, it takes about 25 seconds to boot. This behavior can be observed both with all the extensions running and in safe mode. The link to the profiles are shared below.

With extensions: https://share.firefox.dev/3riMPQZ In safe mode: https://share.firefox.dev/3OadE31

I have been noticing this for a few months now. Firefox works just fine after wasting ~25 seconds initially. I have also reinstalled Firefox multiple times. Right after the installation, the boot-up can be very fast (less than 1 second). However, after using Firefox for a few hours, the problem comes back.

I am not well-versed in reading Firefox profiler reports. So, please help me figure out what's actually happening in those ~25 seconds.

I can no longer access the website www.att.com. I receive the following error message. I've deleted history cache and cookies but still can't access it.

Access Denied You don't have permission to access "http://www.att.com/" on this server.

Reference #18.14ad3c17.1692143272.3762eaa6

Any suggestions? It works fine via Microsoft Edge

I have been using Firefox as my default browser in Windows for a number of years without problems until recently. However I now find that, when I log on to sites where I have accounts, I am not automatically signed in. When I select sign in I am taken to a sign-in page where, on some accounts, , my usernames and passwords are already filled in. I have tried following Firefox guidelines with regard to settings and options, all to no avail. Can you assist me please.

Buttons like 3 bar preferences button, notification etc are broken or not visible just the highlight is visible and click the notification button also break the whole browser