Firefox Support Forum

Greetings everyone,

Firefox is my preferred browser and I really prefer the Firefox Engine over Chromium that most other browsers use.

I want to install a backup browser that runs the Firefox Engine in case my Firefox browser has a problem.

I searched a lot and I thought installing this would be the best option: https://www.mozilla.org/en-US/firefox/developer/

However, I’m worried that installing the Firefox developer edition will change my Firefox installation…

( :( :(

I'd like to update my mac's firefox, but not to the latest version. I know about the directory of releases, but I can't seem to find advice on what to do once I download the file. I don't want to create a separate profile, or risk messing up the profile/settings I have currently. So, any thoughts? Thank you in advance for the help.

Win10 with what was Firefox 89. I had already disabled the Proton UI on this installation, because it is horrible. Today Firefox decided to update to version 91. All of the Proton UI junk is back. I tried disabling it again, but nothing worked. Doing a web search, it appears that Mozilla has disabled the ability to turn off Proton.

I then set about to rollback the installation back to version 89. I found a Mozilla link on this, went to their ftp server and downloaded the installation files for the last version of 89. The installation went normally, but when I opened Firefox afterwards, a little box popped up saying something to the effect of "To keep your History and Bookmarks from possibly being corrupted, Firefox must create new user profile." I exited out of this and Firefox didn't start. I attempted to restart Firefox again and the same box popped up again. The only way to get past it was to click the accept button.

I did so and Firefox started. This was clearly not version 89. As the UI is junk, it took several minutes to find out that this was now the latest version of 92!!!! I'm absolutely positive that I downloaded the correct file. When I look through the update history, it doesn't even show todays version 89 installation as happening. What a piece of junk.

I then spent 20 minutes figuring out how to revert back to my user profile, not the new one that it had created for me. I then did some research on what had happened. Well it turns out that you can't actually rollback Firefox, despite what Mozilla says. For a while they have added "downgrade protection" which automatically creates the new user profile and stops your old profile from being accessed by it. So unless you want to figure out how to spend a hundred hours reconstructing bookmarks, passwords, settings, etc. it actually isn't possible to rollback Firefox. Doesn't this violate some Microsoft rules about being able to uninstall versions of software from within Windows? If you try to do this with Firefox and go back to a previous version it blows everything up.

Does anyone know how to actually rollback Firefox to a previous version, so that Proton can be disabled?

Been desperately trying to get Firefox to run on my Acer Chromebook 315 through Linux. The app store version just isn't cutting it. I followed these instructions below as best as I could installing linux and flatpack. I even ran a power wash and tried again.

https://support.mozilla.org/en-US/kb/run-firefox-chromeos

The icon comes up in my dash, but is gray and endlessly loading. Not sure what else I can do. I'm pretty my system is compatible. Is there another way? Am I missing something?

Thank you,

A

Hello čaute i had problem with my pc,so i bought new one with new HW and SSD,but i have kept my old hdd. I would like to copy my profile from E:\Users\user\AppData\Roaming\Mozilla\Firefox\Profiles to C:\Users\user\AppData\Roaming\Mozilla\Firefox\Profiles I did ,it is almost 1,2 GB file. After copy i tried to open new mozilla that is on new ssd,but it gave me this error message: User profile firefox app cannot be loeaded. Probably profile is missing or it is unavailable. Could be because i have dowloaded older version from march? What can i do. It is very important for me to have all my old bookmarks and history. I tried first to import my bookmars which was succesful, but i would also like to have my old webhistory and old theme. Also i am not sure but i found somehting about places.sqlite , it is my old history of browsing? Can i put it into new profile somehow? Please prosim help pomozte. Anything

Hello,

I need to export many profiles that are connected to my FFX account. these are the profiles found by going to "about:profiles". These do not restore on a new computer after signing in to a ffX account.

I have followed the steps outlined in this support article but it does not work, and I don't think applied to "about:profiles". https://support.mozilla.org/en-US/kb/back-and-restore-information-firefox-profiles YouTube videos also do not appear to focus on importing the 'about:profiles'.

If someone knows how to do this, I would be very grateful.

Thank you Liam

I received a message stating that my current "Firefox" needed to be updated to '64-Bit'. I updated and lost all of my favorite icons (25+). I also have to create an entire new account and password as I'm told the old is not correct, ! I'm not happy in losing all of my previous information & email account on the older version that I've had for years!!!!!!! Can I retrieve, reload, etc....

[Personal information removed by moderator. Please read Mozilla Support rules and guidelines, thanks.]

hi there,

I'm having problem downloading Firefox browsers onto my Windows 7.

I'm constantly getting this message

Hmmm...For some reason we could not install Firefox.

Please help, two days have gone and still this problem hangs on....

Many thanks Q

I was having issues with Firefox freezing on launch, so I ran the repair which did not help. I tried to uninstall the browser and the uninstall stopped responding. I downloaded and ran the Firefox Setup 93.0.exe file and it freezes trying to execute the default-browser-agent.exe at register-task E7... (see the attached photo - I can't expand the window to read it from there).

I much prefer Firefox to Chrome and would like to get it up and running. Any help would be appreciated.

I would like to download and install the older version of Firefox. This I believe that version is 93 for Mac OS.

Version 102 to is just released (28 June 2022). I do not want to install this new version until it was proven over the next few months.

Please advise how to get the Version 93

Cheers

Asoka