I-Firefox Community Forum

I got a random pop up on Firefox that I clicked without fully reading it, which closed Firefox and then prompted me for the administrator password (aka the password of that account on my laptop) so Firefox can install a helper tool. I did, and it did nothing. Every time I try to open Firefox I get the same pop up prompt and no matter how many times I give the password nothing happens, and I can't open the application. Clicking cancel on the prompt also does nothing.

I logged onto a different account on my laptop and can use Firefox like normal, but none of my settings/bookmarks/passwords from my other Mac account are saved here.

I would just delete and reinstall Firefox on the administrator account that is having this issue, but I don't know if I have anything properly backed up on Firefox, and I have a ton of things saved on there that I really don't want to lose. What do I do? Please help :(

Last screenshot is what happens when I try to launch Firefox and enter the password when the install helper prompt pops up

There was a Microsoft update to Windows 11 today. Immediately after that, Firefox keeps giving me message that cannot restore tab. I close tab and try to open Firefox again and again get message that cannot restore tab. How do I fix Firefox so it works again?

No matter what I did(and I did go through all the steps suggested on line) the program locks up my computer when I would try to start it. I'm on a Windows 10 lap top ver. 19045 with a fresh reinstall of windows.

I tried uninstalling and reinstalling, both under user and admin rights, getting fresh install files with and without having the security and firewall on, running it under admin rights without security or firewall. I tried repairing the program before uninstalling it.

Nothing worked. The program would lock up my computer every time I tried to start it. my only choice would be to power down the computer and start over. I was looking for a browser less resource hungry than Google and not quite as intrusive. Maybe you can suggest one that works.

Moderator note: This question has been edited to correct the formatting.

Firefox did an update and "couldn't find XPCOM" and crashed. Uninstalled and re-installed but now my Firefox icon opens a website "nine.com.au". I WANT MY FIREFOX BACK!!!!!

I try hard to use firefox in headless mode for a python selenium project in freebsd. But firefox complains about GPUs and the absense of a X-Server, but this is a headless mode and crashes with a segmentation fault. Why does it want a GPU and X-Server in headless mode? Does not make sense.

The output when i try to start is : " firefox --headless

• • • You are running in headless mode.

Crash Annotation GraphicsCriticalError: |[0][GFX1-]: glxtest: Unable to open a connection to the X server (t=0.117314) [GFX1-]: glxtest: Unable to open a connection to the X server Crash Annotation GraphicsCriticalError: |[0][GFX1-]: glxtest: Unable to open a connection to the X server (t=0.117314) |[1][GFX1-]: No GPUs detected via PCI (t=0.117314) [GFX1-]: No GPUs detected via PCI

Crash Annotation GraphicsCriticalError: |[0][GFX1-]: glxtest: Unable to open a connection to the X server (t=0.117314) |[1][GFX1-]: No GPUs detected via PCI (t=0.117314) |[2][GFX1-]: Failed to initialize shared font list, falling back to in-process list. (t=0.118314) [GFX1-]: Failed to initialize shared font list, falling back to in-process list. Segmentation fault (core dumped) firefox --headless "

Can anyone help me? Best regards Josef

Firefox 144 starts in Windows 11 for a second and dissappears. There are 10 new Firefox processes visible in the task manager. When I start a second time, an empty browser opens, although Firefox should display the last session. Only over chronicle and last opened windows I can restore the last session. I switched of every addon, but no change. I don't use a special theme. What can I do to work with Firefox like before?

For the past few weeks, I have been intermittently but stubbornly getting the beachball of death when I open Firefox, coupled with Force Quit. Sometimes I force quit and then restart and it's fine. Sometimes I force quiet repeatedly and it continues not to open. Sometimes I restart my laptop and that fixes it, but sometimes not.

I do have a lot of tabs open, but i have always had a lot of tabs open. This thing is new.

What could have changed? What do I need to do, fix, trash, or curse?

(In simple language, like for your unsavvy grandma please?)

After a Windows 11 update, Firefox does not automatically start although set to do it and when I start it, a small rectangular box appears in the upper left corner of the screen.

Please resolve.

Lately every time I open Firefox on my PC (Win 10) it says that it is already running and that I need to close it first. How can that be if I just started the computer session?

Sometimes when I do a google search the results come up in a foreign language! I am in the USA and speak only english. Changing my preferences doesn't always maintain the fix.

Firefox won't open. System says it can't find VCRUNTIME140.DLL. There are SEVERAL copies on the drive. I believe I Refreshed and Reinstalled? And still cannot run.

This is the first time Firefox has failed in years. There are no instructions for this specific problem. FWIW I just installed AURA seemingly without problems.

Richard PS - Wouldn't it be great if the library of proven volunteer responses was searchable? r

Hello,

I have encountered an issue on some websites where the Japanese text is using the font "Microsoft YaHei" when it should be using "Meiryo." Some examples are on the website bluesky, and bold text on Twitter such as in usernames.

I originally thought it was an issue on my end or in Windows, but when checking other programs and websites such as dengekionline and the non-bold text on Twitter it is using the correct font which I have confirmed via the inspector under the font section. When starting Firefox in safe mode it seems to use the correct font on the previously mentioned websites, so I disabled all my extensions and themes and this did not resolve the issue. I did a Firefox Refresh and this also did not resolve the issue.

I am not familiar with the intricacies on the Firefox about:config to really delve into the exact cause, so I ended up just reverting back to Firefox 134. On Firefox 134 with my same extensions previously the font is now back to Meiryo as it should be which leads me to believe it is something that was changed in Firefox 135. One thing I am considering is that the Japanese text is being recognized as Simplified Chinese by Firefox 135 as Simplified Chinese uses the Microsoft YaHei font as a default.

I have attached some photos that shows my Japanese font settings, and the same post by a user one on Firefox 135 which is using Microsoft YaHei and another on Firefox 134 which is using the correct Meiryo. I have also tried disabling the "Allow pages to choose their own fonts, instead of your selections above" and then restarting on 135, but this did not resolve the issue. Thank you for your consideration.

- Had 3 windows open with numerous tabs and tab groups - Firefox sync was enabled, as well as a 2-3 plugins AFAIK - Version installed is latest as of this writing 139.0.4 - Initial crash caused by opening and quickly closing (IF that succeeded before crash) a onedrive share link - Cannot start firefox any more, also not in safe mode - the only thing that works is launching it with a fresh profile.

The report ID is bp-a8c824fc-a7fb-4290-a72b-b63160250620

Ideally I can resolve this without needing to refresh or start over with a new profile