Firefox Support Forum

After installing Apple Ventura, and trouble with User Accounts, Firefox won't open, giving me the error message about not finding or having a Profile.

I did all of the suggested fixes on the Help pages, renaming files with "OLD" etc., finally deleting the entire Firefox folder in Library/Application Support, and the program still won't launch and gives me the same message about not finding a "profile."

Please advise how I can eradicate every trace of Firefox on the computer and start over; the program should create a new profile and let me use the program, but it's refusing to do so.

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

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.

Hello,

I am wondering what if anything regarding settings, customization, data, etc is likely to break if I perform this update? THis has happened in the past and is why I turned auto update off. Should any intermediate updates be done to stepover/convert any of the data structures to a newer format?

Thanks, Steve

I had to switch to a new Windows 11 laptop. I installed firefox my favorite browser. It has been a disaster. after 1 week of trying different settings I have been unable to log into Facebook, Ally Bank, Netflix and others. I have changed the delegated credentials from true to false and it doesn't work at either setting. I am either getting SSL errors, "Pardon the Interruption" on netflix and some sites just say "Unable to log you on". Please note that I can successfully log on all the apps on Edge.

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.?

Hi there I am moving from one apple MacBook air to a new one. I have 100’s of bookmarks from Firefox that have taken an age to organise. How can I move these to the new laptop

This is a new desktop PC. I uploaded Firefox expecting my old hard earned bookmarks to transfer - but no - it was my little used Microsoft Edge Ones. Happily, I still had old Firefox and bookmarks & toolbar on laptop but, attempting to follow online instructions to migrate those to this machine I have lost them too. Please help. Many Thanks.

It's all happened in last hour or so.

Switching to a new Mac computer and trying to get the bookmarks back, especially the tool bar. I did the export and import steps. Both export to HTML and as a backup file. Next I airdrop it to the new computer and try and import it there. Seems to work (no errors), but no bookmarks. I have looked at google videos and tried searching you help area.

Chrome i just log in and it comes over, I remember losing everything in firefox last time I got a new computer and had to rebuild from scratch. I can't afford that again, please help.