Firefox Support Forum

Hi all, I'm having an issue that I've seen mentioned over several years and without a workable solution - I'm at the point of having to transfer all my browser usage to chrome and abandon my beloved firefox. The issue has been 'answered' by advanced users to tell people to 'inspect' which font is the issue then check local systems font book for corrupted/duplicate fonts: however this is not a satisfactory response. Context: see screen shot attached for what the jibberish looks like, and a point in the 'inspect' view that I believe (guessing) is involved. System: Firefox 112.0.2 (64-bit), MacOS 13.3.1 (a) (22E772610a) on Macbook Pro (13-inch, 2020, 2 GHz Quad-Core Intel Core i5). This same websites do not have any issue on the same computer viewed on Chrome or Safari. Nor is there any problem on my iPhone on the iOS firefox browser.

Firstly this is not a user-friendly solution for most people, I'm afraid. Opening the inspect viewer is mindboggling for anyone who doesn't code and even for people who do some programming but not for websites (like me), it isn't exactly self-explanatory. I think I've managing to find examples that indicate 'Roboto' seems to be consistently involved in the display issue. Secondly, the step for 'fixing' the font that is the culprit - my local system indicates that all fonts are valid and there are no duplicates. I haven't installed manually Roboto as I'm uncertain where to 'safely' get the font from and my computer is owned and managed by my workplace - with overly strict administration/security rules so if I f-up a download of something dodgy my IT service will blacklist me and revoke my admin access... ** which would mean I'd be unable to do my job!**. I wondered if perhaps there is some security setting due to that, which stops website from loading the fonts they choose? From previous 'solutions' it said that having Firefox preference set to "allow websites to choose their own fonts..." should mean the websites can load as needed. If indeed I must manually download fonts for each and every instance that Firefox fails to display text legibly that is equivalent to Firefox being unusable. I'm clearly frustrated and it's because I love FIrefox and the ethos behind it all so leaving for Chrome would be very sad indeed! Help and a solution for normal users would be so very much appreciated. Also where can I properly lodge this issue with peeps who fix things? There are issues of this kind going back years and for both Windows and Mac Systems so it's not a one-off problem but a recurring one! Please pretty please, people who do the magic that makes Firefox - fix this issue... Thanks for reading my rant and for any helpful responses. Cheers, Megan

Due to some unknown reason from today morning whenever I use paste function, my Firefox crashes and quits. It includes pressing ctrl+v, right click and paste, and edit>paste. It occurs in all webpages and not only with texts, but also when I try to copy/paste for example a bookmark.

My browser is up to date, I rebooted several times, and also opened Firefox in Troubleshoot mode. But the crash still happens.

Does anyone have any idea what the reason of this problem is and how I can fix it?

I believe this happened after some Windows update.

Neither in Firefox, nor in Chrome can I get my microphone to work. The browsers are correctly asking for permission to access the microphone, apparently the website gets a positive feedback, but no audio stream.

For example, if I use the online microphone test, the test widget displays a line, but no visualisation of my speaking. https://www.onlinemictest.com/

The webcam works fine, and the microphone does work in other applications.

Teams Web even allows me to switch Microphone from my headset to the internal mic, but it doesn’t change anything.

Might there be some Windows Policies in play that forbid browsers in general to access the microphone?

How can I further analyse this issue?

Thanks a bunch already!

Hello, I hope someone can help me.

Ever since I updated firefox, my cpu is almost at 100%. With only 2 or 3 tabs open. I updated from version 106.0.2 to 112.0.2. Before this update, I could have several tabs open, up to 10 and the computer would run fine. Now with 3 tabs open, it gets really slow. And I can hear my desktop suffering (the fans go to full speed). When checking the task manager, firefox is taking all the memory and the cpu usage is almost at 100%. I have to keep restarting firefox.

The conditions are the same. The only thing that changes was updating firefox. I already searched for ways to reduce the firefox cpu usage, but nothing changed.

Is there a way to fix this? Or how can I go back to an older version of firefox? Because I'm afraid my computer will die from simply opening 3 tabs.

Thank you in advance.

After upgrading one machine from Fx 110.0.1 to Fx 112.0.1 (as per usual with "major" upgrades with the full install file) I noticed very high CPU usage when closing Fx, and it took quite some time to settle. I upgraded it to 112.0.2 via Help-About, but saw the same issue.

That is, starting Fx, opening a "private browsing window" and visit some site, say a search engine, then closing the private window and finally the first Fx window. (At the time I also see some spikes in CPU usage from the firewall software etc.)

Since I can’t have it like this, computer almost stalling for 30 sec, after closing Fx, and to see if there would be any update later to solve this issue, I uninstalled Fx 112.0.2 (I have complete backups of Fx profiles), and, just as a test, reinstalled Fx using the prior version of setup that I had, Fx 110.0.

Of course this meant a clean profile, not what any user wants to see (missing bookmarks is almost minor compared to all settings, incl. in add-ons, gathered over time. So I used the profile manager to change to my previously used default profile. After a restart I was greeted with a prompt that this couldn’t be done (since it may corrupt bookmarks(?) etc.) and I was left with the only options to abort (cancel) or create a new profile. Oh, great. I had not even used the newer ver. (Fx 112) to change or create anything, but I assume Mozilla could have something between the different versions.

So, I uninstalled Fx 110.0 (and of course in the process of creating a new profile/resetting settings it had reverted to "download updates in background", and I had to change that setting back, and stopped what was pending, during my tests trying to move it to my old profile). I installed Fx again, using the setup file for 112.0.1 and did a direct upgrade to 112.0.2, and pointed it to my old default profile, which had been used with 110.0.1 and during the first upgrade to 112.0.1.

Fx is working with my profile again, but it takes a very long time to close and (perhaps together with other software) consumes a lot of CPU, almost stalling the PC. During one such situation this morning I got two prompts for XULRunner "Could not determine any profile running in background task mode!" Never seen before. (I noticed that there now is a new folder in Roaming\Mozilla\Firefox\ called "Background Tasks Profiles".

Any help would be very much appreciated.

Unable to connect

An error occurred during a connection to www.irctc.co.in.

   The site could be temporarily unavailable or too busy. Try again in a few moments.
   If you are unable to load any pages, check your computer’s network connection.
   If your computer or network is protected by a firewall or proxy, make sure that Firefox is permitted to access the web.

Why i am getting this error despite this website is operational through CHROME

Hi, I have firefox on my Ubuntu 23.04. When i start it it shows a black screen. I click quit on my system and then i startup and it lunches normally. What am I doing wrong or how to fix it?

I am trying to figure out why my Firefox tabs keep crashing every few minutes. I have reinstalled Firefox and I am still getting the same issue. Please let me know if there is any solution.

Crash ID: bp-1d5b4075-6316-4907-9307-e7f250230511

I am trying to run firefox unofficially run a windows vista Virtual Machine using the Windows Vista Extended Kernel, but is says the the dll "api-ms-win-core-sysinfo-l1-1-0.dll" is missing. It did this a couple of times and i was able to copy over all other dlls, but after placing this one in Windows,System32,Program Files/Mozilla Firefox and SysWOW64 and re-registering it, it still gives me an error. Could you please provide the location of the required dll since it can't find it.

For the last month or so I have had problems with Firefox using too much CPU, too much memory. This is not long after I have restarted. It soon gets so bad that there is a 3-6 second delay in anything I do. At this point I am going to have to stop using FF as it is too disruptive. Cannot place any other system changes.

все время падает браузер при нажатии "вставка" из мышки или при CTRL+V переустановила фаерфокс но проблема так и не решилась. даю вам последний шанс и меняю браузер на Хром.

I have tried fixing the config settings, I have tried uninstalling and reinstalling. I don't have any applications anymore (not even a background), and I have deleted and got rid of cache, history, etc.

But it still keeps lagging for me to the point that its hard to even use it now. I checked the task manager and even with just 1 new tab open, it was using 80% CPU. I changed the settings on it for the hardware like other replies said to do, and it still won't stop lagging.

It works perfectly in troubleshoot mode, but as soon as its gone, even when all the extensions and add-ons are removed, there's still a ton of lag. My computer is an Acer Nitro 5, I literally got it last year. Firefox was working up until 2 days ago just fine!

I can't seem to figure out the cause of it

Hi, I'm having a ton of issues with Firefox over the past couple months. It seems like it is having a terribly time connecting to anything. If I open Firefox and try to search using the URL bar, it will attempt to search, and either get hung up and just continually load until it just stops and leaves the screen blank or it will give me the little astronaut saying something like "oops can't connect". Then if I were to try and open YouTube. The same issue, and when it does load and I try to type in the YouTube search, it gets hung up AGAIN. YouTube videos never load past the 1 minute mark until I give it like 3 minutes to load.

Some information about my setup:

• i7-11800H
• 16GB Ram
• RTX 3070
• 416 Mbps Down | 22.3 Mbps Up
• Extension include: Bitwarden, Dark Reader, Privacy Badger, and uBlock Origin
• I use AVG as my security suite

I seriously couldn't begin to think whats causing these issues. I understand there's a lot of anti-trackers and AVG, but seriously 3 minutes to even boot up YouTube or not even being able to search on Google from Firefox? That's ridiculous.

Ive tried refreshing, launching in troubleshooting mode, clearing cache and cookies. Nothing works, in fact in troubleshooting mode I still experienced the issues.

Streams like this don't work on my laptop.

I'll start the stream but it'll load forever and then crash (not the site, but the video player).

These streams do work on my phone using mobile Firefox.

I'm thinking it has something to do with the latest update. I only installed it recently and that's about when these streams started breaking.