Firefox Support Forum

Firefox 115.12 esr installed on Mac OS Sierra 10.12 on previous older MacPro computer will not update to new Firefox 127 on Mac OS 14.5 on new MacPro computer. Though I downloaded Firefox 127, the about Firefox still says 115.12.0esr (64-bit), Hence, still running 115.12 esr on new computer. How to update to Firefox 127 and keep all passwords, bookmarks, settings, data? Thanks for your help.

All of a sudden, I can't download any attachments, no matter what file type it is. I've reset Firefox to it's default, restarted, everything suggested. I don't have the first clue as to what this is.

For a week or better I have been unable to download anything through my Firefox browser, I have refreshed and uninstalled Firefox (I had to reinstall through another browser) in an attempt to fix this issue to no avail. I cannot download from verified sites, nor am I able to download Firefox's own extensions or themes (when I attempt I get an error telling me to check my connection, screenshot included).

I would like to be able to use Firefox normally again, with the ability to download files and install my extensions restored.

I am a web dev and have a user download link to an excel xlsx file. On my own system it downloads fine in Chrome but in firefox ot displays the raw contents. Is this a FF setting?

I want help to recover bookmarks and password saved on my Firefox browser.

There was a issue with my Windows 11, due to which I was not able to boot on to Windows, hence I don't have the option to export the profile etc. Due to this the only option for me was to copy all the data on C drive through cmd prompt. After having taken all data back, I have reinstalled windows and firefox.

I did some search on the internet to locate the profile files so that I can get back my bookmarks and passwords. However I am unable to locate the same.

Request some guidance and help on this.

thanks Nitin

I was trying to download ledger live from an official site when I noticed Firefox had twice tried and failed to download an old version of the tor browser I downloaded a long time ago.

A few hours before this happened my pc froze for a minute.

I'm not sure if I have malware on my device or if this is Firefox acting up. My antivirus scan shows nothing.

I transferred by Firefox bookmarks from my old computer to my new Windows 11 computer. I think they transferred fine. But to access them, I have to click on Bookmarks and then go down to Manage bookmarks and click on it. Then I see them on the page that has all the Import and Backup access on it. How do I get them to appear in the side panel as a list like they did on my old computer?

I Have Had It Installed On Microsoft Edge For About A Year With No Problems. I Had It Installed For About 3 Months On Firefox Then I Needed To Install It Again & I Get The Above Messages. Why Is It Doing This? There Hasn't Been Any Harm Done To My Computer. Also Firefox Needs A Customer Service Phone Number For People To Call & Explain Their Issues It's A Lot Quicker & Easier To Solve Your Problem.

Firefox stopped launching from the desktop. After reinstalling the new 127 both once with the 64bit, windows 10, English. The with the 32 bit version as well with the same configurations.

The problem is that the browser will not launch from the install finish window or the short cut icon. I can start Firefox from the Search window > Firefox > run as administrator. Firefox will start up but will not google search and the settings button will not function. I have installed Google Chrome and am sending this message through them. I don't want to use Google for all the reason for privacy that you already know. HOW can I get Firefox back ? Thank you for any and all help you can offer. My Best Regards, Doc'

I had the situation maybe a year ago. I use the Firefox profile manager.

I just updated to 127.02, and now not I'm getting this because for whatever reason, since the update, I am somehow on the beta channel, but only with this profile. I just opened two other profiles, and neither is on the beta channel, although i don't know what "Firefox is being updated by another instance" means.

I don't know if it's just a coincidence, but I'm also just noticing that a number of my addons settings have reverted to default.

I installed a dev version of Firefox to test a plugin.

Then I uninstalled the dev version, but now none of my profiles on the regular version work...

Please help me, I really need my old browser history and cookies.

When I try to use one of my old profiles, I get "You've launched an older version of Firefox" and it tells me to either Create New Profile or Exit.

I read online that people add "-allow-downgrade" to the Windows shortcut, but this does nothing for me.

Thanks you and please help!

I found that my session activity on a secure (logged-in) website was being interfered with. I could not log-out of that website. After I closed Firefox, a notice appeared that an update was in progress. Why should a Firefox update interfere with an active session? Is this an updating issue that needs fixing?

Hi folks,

I'd like to obtain some clarity on provenance aspects of Firefox released as a Flatpak.

I see in this article that one of the options is to use flatpak package: https://support.mozilla.org/en-US/kb/install-firefox-linux

Is this article produced / reviewed by mozilla? Is flatpak an officially trusted, backed by mozilla, means of installing firefox on a system?

On flathub one can observe the "Verified" seal which indicates that such package is developed and maintained by original package developers (in case Mozilla). One can also observe in multiple forums here and there that mozilla is the one that builds and maintain this package.

Though a seal is nice, and users opinions are ok, it would be good to have artifacts that would evidence better this relationship. Also, would be good to have this officially stated in mozilla's website, under "Download options and other languages" section, something like "you can also safely install firefox through the flatpak package available on flathub which is developed / maintained / signed by mozilla itself".

Or maybe all of this information is around and i am just not able to link it together.

Thanks

I just bought a new MacBook Air to replace a Windows 10 laptop which crashed about a week ago. I have my files backed up with Carbonite. I have found and downloaded a copy of my Firefox profile from Carbonite's website. I wanted to restore the profile to the new Mac computer. I have followed the instructions I found online to copy the specific files to the new profile. I finally got the bookmarks file to work, so my bookmarks are now transferred to the Mac. However, the passwords are still not showing up when I copy key4.db and logins.json to the new profile on the Mac. What can I do to get the passwords copied and restored to the Mac?

I do not know what version of Firefox I was running when the profile file was last backed up, but it was supposed to be running the current version when the laptop crashed last week. However, Carbonite shows the date of key4.db to be April of 2019 and the date of logins.json to be 10/8/2022. Should the files be newer? Would they be from an older version of Firefox that's not compatible with the current Mac version? I also just noticed that even though the bookmarks folder was dated 6/9/2024 in Carbonite, the restored bookmarks do not show some fairly recent bookmarks I added earlier this year. Is there any way to get my files back?

The Windows laptop that crashed is stuck in a loop and says it's trying to repair the hard drive. Is there a way to get it turned on but not booted up and connect it via a USB cable and transfer files to the Mac that way?

Thank you.

I've been unable to complete the installation of the latest version of the Firefox browser for Windows 10 for several weeks because my Bitdefender online protection repeatedly blocks the connection to incoming.telemetry.mozilla.org saying: "firefox.exe attempted to establish a connection relying on an unmatching security certificate to incoming.telemetry.mozilla.org. We blocked the connection to keep your data safe since the used certificate was issued for a different web address than the targeted one."