Firefox supportforum

Hello!

I've upgraded my PC to Mint 20.1 and applied the latest upgrade to Firefox 87 also. Prior to these last upgrades I could use Firefox, ie after upgrade to Mint 20.1 Firefox worked then, after applying the latest upgrades in the Mint Upgrade Manager, including a Firefox one, it did not.

Now Firefox will not open any pages anywhere. This includes the about:preferences page (thus obviating almost all advice I've seen) and even a local two-line "Hello world" HTML page in my local Documents directory.

Nothing displays at all, not even an address in the address bar (unless I type one in but that makes no difference). See the attached, unexciting, screenshot. Things I've tried already:

• Refreshing Firefox
• Restarting with add-ins disabled
• Clearing the cache
• Copying over a profile into the .Mozilla folder from a version that worked before the upgrade
• Deleting and reinstalling from scratch
• Trying the first four items again on the fresh reinstall
• Installing V85 (which works on my laptop)
• Trying the first four items yet again on V85
• Installing V84, which was the version prior to the upgrade on my PC
• Going back to V87 fresh then re-starting Linux in safe mode and trying again
• Looking at the traffic in Wireshark (didn't really help, that one)
• Shouting at the screen (was even less helpful than Wireshark)

In no case is there any change in behaviour. The only thing that will display is the "troubleshooting" page and I attach here the text from that.

Am I the only person to have experienced this lately? Similar reports for much older versions exists but they're mostly for Windows so no use to me.

So -- can anyone suggest anything? Bear in mind I can't get to any about: pages nor do any web developer options work.

All the best

AxS

Hello together,

when implementing canvas graphics with 2D context, I notified that the latest FF 87.0 on windows is much slower than chrome/edge/opera on windows and also much slower as safari on mac. I drilled into detail and detected that it was caused when drawing polygons with color gradient (see attached image). Means that using canvascontext.createLinearGradient() instead of flat colors makes it slow. On the other hand using flat colors is perfectly fast.

I wondered, because I had much better experience with FF and installed an earlier version (78.9.0esr) on the same windows workstation and the problem was gone. Seams, that some change made the newer FF slower with this type of graphic..

CPU is i7 8650U 1.90 - 2.11 GHZ, OS is Windows 10 version 20H2

But the effect is the same on all windows workstations I tested. Would be happy to see, that I can use FF again with these type of graphic apps.

a similar problem in a browser installed with apt (but when running in safe mode, there is no problem, and manually disabling extensions and cleaning / refreshing firefox, does not help). When installing via snap, there is no such thing, but it does not suit me for work, since there is a problem with profiles.

I would be very grateful for your help in solving this problem.

Details: Имя Firefox Версия 87.0 ID сборки 20210318103112 ID дистрибутива canonical User Agent Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:87.0) Gecko/20100101 Firefox/87.0 ОС Linux 5.8.0-48-generic #54~20.04.1-Ubuntu SMP Sat Mar 20 13:40:25 UTC 2021

I hope you can help. I cant fix it. Geeksquad agents reply - Use chrome. Letters come up pink, shapes, or missing, pictures break up to green lines when I go to other apps within program . I have used Firefox for a long time. I tried updating it - says it is uptodate. BACK to GS- hours wait and who knows what would happen next. **( - HELP from those who know how to fix it would be appreciated. Sigh. min*

Since two days I can't connect to any websites or getting options page directly. Enter about:config, about:preferences also doesnt work in the url bar. (The url is also suggesting theses pages.)

I already reset Firefox, changed the profile, cache cleared. Event a full purge with apt purge firefox and removing any firefox files didnt resolved my problem.

If I'm clicking in the top right menu>preferences, this doesnt launch the tab.

The only thing working is passing by the top right menu>help>troubleshooting informations. Only on this page I can replace about:support by about:preferences in the url bar and now I can get the preferences... If I try to enter a url like google.com in the same place, it's loading but spinning indefinitely.

Firefox is the only browser getting this kind of problem.

Downgrading to 86.0 release or use developper edition didnt work.

It's the first time in so many years that I'm getting this. I don't know where the solution can be.

Thanks by advance.

I'm a worker in a Government firm , and here all operation system has Windows XP, and when I said them to upgrade it according to need they denied, Now I'm a Mozilla user since 2018 and best part of it did not consume much memory as Chrome but in Core i3 - 3rd Gen. 8 GB RAM, 120 GB Hard, when ever I open Mozilla it shows me an error like send report or do not same like that. What's the reason behind this I have already read your Blog but did not solve my issue. I think May be latest version is not compatible with the Windows XP please clear my point thanks in Advance.

I am on Mac OS High Sierra Since about a week literally any Russian website I open just crashes Firefox immediately. I have tried to restart in Safe Mode and clear history - it didn't help. What is happening?! Using Chrome in the meantime (no crash there)

it started from yesterday... when i open firefox after a minute or less the browser suddenly close all tabs and show me a report crash windows. . my windows specifications:

• Windows 10 Pro
• version: 1909
• OS Build: 18363.1440

browser: Firefox version 87.0 (64-bit)

I tried this options but didn't help me and crash didn't stop:

1. open it in safe mode.
2. refresh browser option.
3. disable and delete all extentions.
4. delete cookies and web data button.

. there is some information that i noticed. I unistall and install again and until I didn't sign in to my "firefox account" on the top right corner of the browser, it didn't crashed. but still I want my account, passwords, bookmarks, ect... i sign in and crash started. i goes to appdata and delete firefox folder, start the browser again, my sign in to firefox account disappeared and the browser stopped from crashing. also the crash happened immediately after hitting sync now and happened a few seconds after going to firefox account settings. and it's happening after around a minute when i do absolutely nothing after opening the browser or go to website such as youtube. please help me. even though using another browser is crash-free but i wish to stay using firefox (with my firefox account)

I got this message

C:\WINDOWS\SYSTEM32\MSVCP140.dll is either not designed to run on Windows or it contains an error. Try installing the program again using the original installation media or contact your system administrator or the software vendor for support. Error status 0xc000012f.

and firefox would either not load, and after I reinstalled it it would load but not load web pages. I refreshed firefox, uninstalled and reinstalled. Nothing so far. Even after a fresh install nothing.

Hi!

My system:

• Win 10 64 Bit Desktop, completely up-to-date
• Two windows user accounts: one admin account and one standard user account
• using Windows defender / firewall only (NO third party virus scanner / firewall)
• Firefox 87.0

The last day, Firefox worked without noticeable problems. Nothing special happened. However, on the next morning, the problems appeared all of a sudden on the windows standard user account (The windows admin account is NOT affected by the problem):

When clicking the Firefox icon, the Firefox window appears for a split second and then disappears. In Task Manager one can see the firefox.exe processes appearing and disappearing again. It seems that firefox closes itself or is closed by anything else right after startup.

There is no crash, no error message, no crash report. It is simply impossible to start firefox.exe, no matter in which way I try it:

1. Same problem when trying to start in private window mode or in safe mode.
2. Same problem when trying to start profile manager.
3. Same problem when trying to start firefox.exe from windows explorer.

I already tried all the standard solutions, but nothing helped:

1. Uninstall 64-Bit Firefox and reinstalled 64-Bit Firefox
2. Uninstall 64-Bit Firefox and reinstalled 32-Bit Firefox
3. I deleted all mozilla folders in all subfolders of %User%\AppData and also cleared any temporary files there (this should delete all user profile data and all extensions)
4. I did a complete virus/malware scan using ten different malware/virus scanners (MalwareBytes, Adwcleaner, TDSSKiller, MSERT, Sophos, F-Secure, Kaspersky, Bitdefender, Windows Defender, ESET), some of them started from external boot media (i.e. they worked without the need to start Windows). Nothing has been detected.
5. Disabling Windows Defender and Firewall as far as possible (meanwhile, I installed Bitdefender, so Windows Defender / Firewall are replaced)

I did a closer look using ProcessMonitor64, but I could not figure out any abnormalities (maybe you can give me hint what to look for?)

What I discovered:

1. Renaming firefox.exe to anything else (e.g. firefox1.exe) makes it work (but this is not a solution of the problem because Firefox updates will no longer work then)
2. The user of that PC starts Firefox by double clicking on the task bar icon. Usually, a simple click is sufficient. Could the problem be caused by a too slow double click (= interpreted as two single clicks) and a concurring start of two Firefox instances?

Any ideas?

Recently, in a month or so, YouTube comments fail to display, nor allow me to post comments. When I try to comment, it just close that field s if I've post a blank line.

Hi everyone,

Thanks a lot for taking time reading this! :)

I have the following problem with my firefox on Kubuntu 20.04 on my laptop: since a couple of weeks, firefox opens normaly after rebooting, remembered all tabs and my firefox account etc., but it's just not loading anything. I can still type in a web adress or something in the search, I can also still select the drop-down menu on the right ("Open menu") and select e.g. "Settings", but nothing happens afterwords. Same problem for all websites. Some of the main buttons are also not functional (refresh, back/forward). I attached a screenshot from the "empty" firefox (but not sure if that's of any help anyways ;) ).

I tested a couple of things so far, nothing helped:

1) Internet is working, I tested ping, apt is working as well as a differnt browser I installed now).

2) I reinstalled firefox completely by running the following commands:

      sudo apt update
      sudo apt purge firefox // sudo apt --purge autoremove firefox
      sudo rm -rf .mozilla
      reboot
      sudo apt update
      sudo apt install firefox

      (Since I removed the profile folder, the standard tab and bookmarks open/show after starting firefox now, as expeced. I'm also not longer logged in.)

3) By starting firefox via the console, no error messages were shown

4) I created a second ubuntu unser profile, to test if firefox would work there: it doesn't

5) Since I have a dualboot with Win10/Kubuntu 20.04, I started Windows and tested firefox there: it is working as usual.

6) I also obviously tried to google this problem, but either I put the wrong keywords in or this problem is pretty unique/new?

If you need any further information on my system, I'm happy to provide them! Thanks a lot for any recommendations and further ideas, what to do! I'm pretty much desperate for a solution by now, as during home office a not well working system is a pain! ;)

Thanks and stay safe, Katrin

Hi,

I had to delete all my profiles and completely reinstall Firefox because Firefox was not changing the color of previous websites to purple no matter what I tried. I thought I could delete the profiles and create a brand new one to start over fresh.

After reinstalling Firefox (latest version) I have run into a problem where under <about:addons> <Plugins> it shows a yellow box and an error saying "Widevine Content Decryption Module provided by Google Inc. will be installed shortly".

This message won't go away and Widevine will not be installed at all. I cannot browse and Netflix, Hulu, HBO Max etc.

I have tried unchecking and checking the <Play DRM-controlled content> under <about:preferences> which does not work.

I have also tried going to this (link)link and manually installing it but the webpage for my OS's .zip file won't load for me.

I use windows 10, use firefox for months and now i dont know why it's crash. It do not open. I try to reboot no result, try to use installer once again with too no result. How can I fix this?

Hi there,

We use GMail/ Calendar/ Drive for our business. On the official account, I am seeing a continuous - multi-day - situation where my Google Drive won't load when I point my browser to it unless I do at least one refresh after getting to Drive and waiting for my list of folders and documents to show up.

In the mean time, the following error shows upon on the bottom left of my screen - "The server encountered an error. Please try again later." - this has persisted for over 2 weeks when I restarted using Fiefox earlier this month. I do not get this error when using Chrome or Safari.

Today, I am also not able to see the user who last modified a document or a folder last, as you can see in the image below.

Please tell me what I can do to fix this issue.

Thanks, Mahesh

I have been having issues for multiple weeks now and I am at a point where I am considering switching to a different browser completely.

My issues are very random and I haven't been able to find a link between the problems. Firefox works fine for some websites, loading them quickly and loading everything on the website, but for other websites it just doesn't. Some websites will only partially load, mainly pictures/thumbnails and comments being the problem, sometimes the problem is fixed when I reload, but it usually persists. Youtube is a website that very clearly shows my problem, I have added 2 screenshots of that. Sometimes Firefox just flat out refuses to load anything in a tab, which is only fixed if I open a new tab and try there, or wait insanely long.

I have tried loading websites in different browser, never running into the same problems there. My internet is also not bad enough to have problems loading. I have tried deleting cookies and cache, turning tracking protection on or off, making a new Firefox profile, starting in safe mode, refreshing firefox and reinstalling firefox, but none have solved the issues.

I hope somebody can help!

After installing the Native MathML extension (to get MathML typeset equations on the Wikipedia, as suggested on mediawiki.org), all equations set by MathJax/MathML turned to using STIX instead of Latin Modern. I'd like them to stick to Latin Modern instead.

The only possibly related setting I've found is `font.name-list.serif.x-math` in about:config, whose value is `Latin Modern Math, STIX Two Math, […]`. I tried to manually change the font family specification of some text to see if Firefox could use Latin Modern Math to begin with, but apparently it can't (see first screenshot attached), while it loads STIX allright (second screenshot). Latin Modern is not the first locally installed typeface I haven't been able to use, but it's the first one I have really tried to (I don't remember which one the other typeface was).

My Latin Modern font comes from TeX Live 2019 installed using the TUG installer, not Fedora's package manager. `fc-list | grep -i "latin modern math"` returns `/usr/local/texlive/2019/texmf-dist/fonts/opentype/public/lm-math/latinmodern-math.otf: Latin Modern Math:style=Regular`. I'm running Firefox 87 on Fedora 33.