Firefox Support Forum

I suffered a catastrophic crash and had to replace my computer, a mac. I replaced it with another mac.

Because the older one will not boot up, I could not migrate my firefox data.

I ended up doing 'lost password' for all my sites.

There are a couple where the lost password thing hasn't worked.

It occurred to me to rename the (new computer's) logins.json file, copy the old computer's logins.json file from my external backup drive, put it in new computer's /user/library/application support/firefox, and then look in preferences, get the two passwords I want, set things back, enter these passwords into firefox again.

This did not work. In fact, now no matter which file is named logins.json, preferences says I have NO passwords stored.

I cannot find anything that tells me how to just decrypt the .json files (at least, not in a step-by-step way that I can use.)

Since about two months ago, I haven't been able to update Firefox(or any other browser for that matter). I've tried the typical method of going to Preferences, checking for updates, but I can't get passed that point. I get this error message stating "Failed to check for updates."

Chrome was giving me much of the same issue, I've allowed GoogleUpdate on my firewall rules, restarted the PC and tried again. Still got the same error message. I have no other antivirus software installed on this device other than the Windows Defender default app. Firefox hasn't told what I should be allowing past my firewall so I haven't tried anything similar for Firefox.

I also tried uninstalling Firefox, but when I tried to reinstall, I couldn't finish that process because clicking on Download Now led me to this error message stating "Hmm. We’re having trouble finding that site.

We can’t connect to the server at download.mozilla.org."

I assumed this was maybe a DNS issue. I tried a DNS flush but that also was ineffective. I tried changing my DNS servers to 1.1.1.1 and 1.1.1.2, also tried other known DNS servers but that didn't work either.

In the meantime, I'd like to at least get an offline installer going because my current version is 110.0.1.

Thank you.

I am having trouble to open firefox browser for ubuntu 20.04(focal). I have also delete mozilla folder from cache and then reinstalled again. I have tried to rename profileini file. Finally I have uninstall and install using terminal by "sudo apt install firefox" but still I am getting this error "Your Firefox profile cannot be loaded. It may be missing or inaccessible".

How to resolve this.

Thanks in advance.

I have Dlink web cams. They are only accessable via a MyDlink app. The app is only compatible with Firefox 51 or 52. How do i get older versions running on my laptop?

I am lost. The articles in Mozilla Support explaining how to backup and migrate my current account , after reading them, just gave me a headache. Can someone explain (in plain english) please, how I can save my passwords, bookmarks and cookies that Firefox has associated with my 8 year old Win 10 Pro desktop so I can transfer that data to a new Win 11 Pro desktop. Any and all suggestions will greatly be appreciated. Firefox and I have been running together since 2004! Thank you, The Old Guy

Tell me how to "re" install my previous version of 113.02 and then fix this bug. Don't know where to get "old" versions to download and will old version just "install" right over the version installed and keep all the bookmarks, etc.?

I received a message from Fire Fox that I should update. Now I have 2 Fire Fox icons and I need to know how to determine which one to delete. Then I need to know how to transfer my favorites and history to the one I keep. They both show favorites and history. I'm a rookie at this so if you can explain step by step it would help, thanks.

I have downloaded Firefox 113.0.1 for Windows x64 but the file seems to be corrupt. When I check the installation file with 7Zip Test Archive appeared a Warning Message due to a Checksum error. All others versions of Firefox downloaded can be checked correctly by 7Zip, but this installation file show an error message that I never have received. Is there a problem with the file? Thanks

I am using Version 113.0.2 (64-bit) and trying to access a home camera system, mydlink.com. When I go to log in there, it tells me "You are using an unsupported browse.....We recommend you use Firefox 12-51/52 ESR on Windows" Can I get this version? What options do I have? Thanks, Ed Corcoran

I currently am running FF vers. 109.0.1 64 bit on Win 10 pro. I don't like what I've been reading about the latest update, my machines are old and I'm not ready to upgrade so I don't want an even more overloaded/uses up more CPU, etc., version of Firefox. I don't have complex needs in a browser, so some of the "upgrades" haven't been useful for me or have made using FF more difficult.

  I found a list of what I guess are older versions but no information was provided on how to choose a version of say v. 110, to make sure it's the right one for my laptop and/desktop (or the one that will work w/the fewest problems) that it's in English, etc.   
  My impression is that FF is mostly worked on by people who have a variety of needs & interests so increasing sophistication is what they want and that's fine, I'd like to keep using FF w/my current machines, w/as simple a version ,ie., useful for an unsophisticated user.    Is that possible?    If so, I'd like to upgrade to 110 64 bit or perhaps 111 64 bit unless either or both had huge security holes, etc and many users found they weren't very functional.   I do have security software.

HI, I had a PC crash and I am now unable to use my old Installation, so I reinstalled Windows anew. Before that I could save some stuff.

I have saved the whole Firefox Profile Folder and the Installation.

Now I just copied the Key3 and Key4 + logins.json Files to my new Profile Folder (places, booksmarks, etc too) but nothing will be applied.

What do I have to do to get my old stuff back? Especially my Login Data and Bookmarks? Why does this not work anymore? Is it due to different Versions? Although I am pretty sure that my old FF was up to date. Is there a Log File?

Also I have an old logins.csv, but it has corrupt/incorrect symbols in it.

Every few days, Firefox makes me log back in again to my account and "create" a new profile version - the message I get is that I have launched an older version, and can only EXIT or CREATE NEW PROFILE. The problem is when I have to do this, I lose all the pinned tabs I had open, also I have to log into Gmail each time and generally set the profile up again. I can then access my bookmarks and containers but not the tabs I had open.

Is there a way to stop Firefox from forcing me to relaunch my profile each time? Its frustrating to lose the pinned data and have to log back into my Firefox profile, then Gmail, then try to figure out where I was at last. Note, the pinned tabs are not things I need to bookmark but rather a running list of tasks/things I need to complete - and unfortunately I don't know when I will be forced to launch a new profile but don't want to create a bookmark each time for temporary tabs... for example, last night I was just in the middle of planning a trip so had a few tabs open to come back to, but when I logged into my laptop this morning, I was forced to create a new profile and have lost these tabs I had pinned.