Firefox Support Forum

Hi everyone,

I have the problem in the Subject line. FF sucks about 500 MB to be run, on top of which it takes 500 MB per tab, and that makes it impossible to run a research on my 8 GB Mac. Yesterday I was looking for a lamp and had no more than 7 tabs open, 3 of which were largely text, 2 were online shops, and 1-2 were websites with pictures. No Facebook or social media, no YouTube. FF froze, made the whole Mac freeze (well, Mac is garbage nowadays but let's leave that out of this topic), and I had to wait MINUTES before I could close it, because the computer was nonreactive.

When I check online, I see people being like "why can't it manage more than 50 tabs?". 50?!?! My computer dies with a maximum of 10 when it's only text websites!

So, I guess there's something wrong with this.

- I don't have many extensions (SimilarWeb, VPN, and Flash Player), I always use incognito so I can't use the plugin that allows me to use several accounts at the same time, so I can't see what's messing with my Mac. - The Activity Monitor (pretty much Task Manager on Windows) shows "FirefoxCP Isolated Web Content" for each tab, could that have anything to do with my problem? - CPU usage is very low, some 0.5 to 10% max during heavy use. - I seem to remember I used to have dozens of tabs open in the past, although I can't be sure. Is this a recent problem?

I really hope there's a way to solve this, because now I always fear that opening FF while on a Zoom meeting might freeze the whole thing.

Thanks to anyone who might want to shed some light on this big problem.

Screenshots: RAM and CPU usage with 2 tabs open. Two, taking more than 1 GB of RAM and about 250 threads in total? While using 0.2% of the CPU? I'm lost

Since I upgrade MacOS to Big Sur, a couple basic Firefox functions have stopped working. 1) History is not being saved. I can restore deleted tabs, but there is nothing in the History menu, nor is there any record (for example, in the form of auto-complete) of websites I have visited in the past. 2) My bookmarks file appears to be mostly read-only. Clicking on the star icon to save a new bookmark does nothing. Selecting Bookmarks > Bookmark Current Tab does nothing. In the Manage Bookmarks environment, selecting Add Bookmark from the gear icon brings up a dialog box in which the only content is a Cancel button. In the Manage Bookmarks environment, I can change the Name of a current bookmark but cannot change its URL. If I try, it reverts to the old URL as soon as I click away from it.

The current help page that most closely describes my symptoms is https://support.mozilla.org/en-US/kb/changes-toolbars-and-window-sizes-are-not-saved. I tried both remedies, including refreshing Firefox and deleting xulstore.json, but no change in symptoms.

Since I moved my profile to a new computer I have had two recurring issues that appear to be related.

Issue 1: I use the Tree Style Tabs extension. After about 30 minutes the sidebar hides itself and the Tree Style Tabs item disappears from the View > Sidebar menu. I have to restart Firefox to re-enable the Tree Style Tabs via the menu.

Issue 2: I have 'Open previous session and tabs' enabled in Preferences, and usually this feature works well. However, once the previous issue occurs (my Tree Style Tabs disappears) and I restart Firefox, it always reverts to the same tabs that I had open on the date of migration several weeks ago.

I am on MacOs 12.0.1 and FireFox and extensions are all up-to-date

Can anyone offer any suggestions as to why these might be occurring?

Hello,

Recently an adult site I go to, which features videos, isn't working: I can get to site, but nothing shows up on the screen. I've always had 'strict' privacy and adblocking protections, but something seems to have changed. This started happening maybe three weeks ago?

I did follow Mozilla instructions, and clicked on the 'shield' next to the address, changed 'enhance tracking' to off for this site. But that didn't solve the problem. What would be the next thing to try?

Thanks in advance!

The BBC website believes I am in another country, other than the UK. It currently redirects from bbc.co.uk to bbc.com, with some content no longer being available.

I have checked my IP, and it is currently a UK-based IP address. I do not have any active VPN profiles.

I have refreshed Firefox, deleted profiles, and redownloded but still the issue presists.

This problem is not reflective on any other browsers on the same machine.

Grateful for your help.

This is the BBC's advice, which I have followed - https://www.bbc.co.uk/contact/questions/behind-the-scenes/website-domain-change

I very frequently open .bib files to get bibliographic information on scientific articles. The by far most convenient way to open these files, which are plain text files, is to just show them as text (either in the same tab, or a new tab). For example if you search for a publication on Google scholar, and click the quotation mark and then BiBTeX, you get the bibliographical information shown as text directly in the browser (see attached screenshot).

However, many other websites and journals instead give you a link to an actual .bib file, instead of just serving up the text. But since a .bib file is just a plain text file, it should be no problem for Firefox to display this text. However, when I go under settings and try to select default actions for .bib files, my only options are to either save the file, or open it with another application (i.e., not Firefox). For other file types, for example .pdf, it works to select Open in Firefox as the default action, but not for .bib files.

Is there a way to fix this problem?

I'm using Firefox 95.0.2 on Mac OS 12.1

Thanks, Tor

I cannot access the preferences and my saved passwords in Firefox for Mac on my computer. When I go to preferences in the menu bar or type command-comma nothing happens at all. I'm worried to say the least!

I use a Firefox account on two different machines- one is a Mac and the other is a Windows machine. I have some programs installed on the Windows machine that installed an extension for Firefox. Those programs are not Mac compatible but because of the same account, those extensions were copied to the Firefox installation on Mac. I was wondering if there is a way to isolate the extensions to just the windows installation? Thanks!

Hey community!

Is there any way to make the cmd + 0-9 keyboard shortcut in Mac OS ignore pinned tabs?

Alternatively, for the shortcut ctrl + 0-9 to activate pinned tabs, and for the shortcut cmd + 0-9 unpinned tabs?

Thanks for the answers!

I have tried all of the about:config options to disable the auto-reload of the tabs. I have this working fine on my old machine macbook pro 2015 (same firefox version), but on the macbook pro 2019 i cannot get it to stop. Any help would be great as I need to switch between tabs during meetings and dont want them to keep relaoding

i accidentally installed the latest update not realizing it will not be compatible with my iOS 10.11.6 operating software. Can I reverse this and go bak to using the browser version I was using prior to this update?

I've been teaching my young daughter how to use a computer, and we chose firefox as a browser she can use to do some things online - in particular she's been doing Math lessons using https://www.themathsfactor.com

After the past few weeks I've noticed that sound from that site no longer seems to work after 1 or 2 days. Embedded videos work, but sound where the site has a character that tells her what to do - stops working. If I restart the browser it starts working again - however refreshing the page does not. This is something recent, as older versions of firefox did not seem to do this. I'm wondering if there is some change/memory leak that might cause this?

I just downloaded Alfred and now when I try a search from the address bar or the search box on the right, it is defaulting to bing! I have restarted in trouble shooting mode and it is still there. I don't see bing in the drop down of searches in default search engines, in fact the only thing that now shows up there is has the firefox icon and "a browser." I ran malware and it quarantined 17 items. Still have bing. Please help me get rid of this intruder! Thank you

I have a persistent cookies 'Invisiblehand.com' that I can not get rid of. I am using an Imac running Monterey 12.2.1 I am running Firefox 98.0

In Enhanced Tracking Protection I have 'Strict' in use. In Cookies and Site Data I have 'Delete cookies and site data when Firefox is closed' There are no sites listed in 'Exceptions'. In 'History' I have 'Clear history when Firefox closes'

But the above site is always listed once I open up Firefox after closing it.

How do I get rid of this? This is a new problem.

Thank you for your time and effort.

Hello! A site kept popping up a confirmation window for an action I was trying to take, and in the confirmation window, there was a checkbox for something like "don't allow [this website] to prompt me again" (that's as best I can remember). I checked the box thinking it would just allow the action to happen without the confirmation window, but instead, the site just won't take that action anymore. How can I undo this setting? Thank you!

I have defined'a home page '. If I open a new link it will not open in a new tab or another page just the home page will show - then I have to open a new tab, go back to the link and then the link will open in this new tab

Is there an easier way so that the link will open in a new page or a new tab

Thank you

Somehow Airbnb fails to load after numerous attempts. Clearing cache etc. doesn’t do the job. Shutting down the VPN doesn’t do the job either. The message I get from their website is (in Dutch) that’s something went wrong.

“Unfortunately your request couldn’t be executed due to a server error. Maybe maintenance is taking place currently on Airbnb or something is wrong with your connection. Refresh the page and try again.”

Anybody knows what to do please?