Firefox Community Forum

Firefox 146.0.1 crashes every time upon launch (basically fails to launch), even in troubleshooting mode, with exception code 0xc0000005. Prior to today, it was working fine. Windows does not show any updates made over the last couple of days. I am on Windows 11 25H2, and I'm current with updates. Chrome works. Edge works. I logged on to the same computer as a different user (different profile folder in the user AppData folder) and Firefox still does not work. I tried to refresh Firefox and that did not resolve the issue. I tried to uninstall and reinstall Firefox and that did not resolve the issue. I tried to run DISM and SCANNOW and that did not resolve the issue. No issues are detected with a virus scan. I am stumped - please help!

Hiya.

So if I download an attached file on gmail using Firefox... it crashes. If I open up a new tab on Firefox... it crashes. It only started this week.

I'm using 12.7.6 and I really don't want to go back to Chrome, so I hope you can help.

The macbook completely freezes apart from the mouse pointer which moves, but cannot open a thing. Every time I have to turn the macbook off to restart it.

I tried uninstalling and reinstalling the latest version.

Best, Mike

I opened my computer several days ago. Firefox updated itself sometime recently while my laptop was closed. Once I opened it, it made me create a profile to continue. Now ALL of my history is deleted. All of my windows and tabs are gone. There is no history beyond the profile it made me create to continue using it. Is there any way to get back the previous history? This is about enough to make me give up on firefox completely.

When I try to access the Newsmax website, I get a black screen with the message which says,

"Secure Connection Failed The connection to www.newsmax.com was interrupted while the page was loading.

   The page you are trying to view cannot be shown because the authenticity of the received data could not be verified.
   Please contact the website owners to inform them of this problem." 

I have no problem accessing other sites, so what can I do to get the resolved?

I signed onto my parents computer that was assigned to a school district and now everytime I open firefox on any of my devices their website keeps popping up. I've signed out of their computer and have tried deleting and reopening my account, and nothing seems to work.

15/12/2025 I need to sync my firefox data from my old windows 10 laptop to my new windows 11 laptop. Do I have to download the firefox app on to my new laptop before I can sync it, and will I need a new password if I have to download the app. Im using my old password on my old laptop to write this. On the new laptop, I tried to sign into firefox on the internet but, it said my password is wrong. I'm an oldie and have no idear what to do. Iwill be very grateful for any help. Many Thanks,

                                                                                           Janet.

Have 5yr old HP laptop and 6 mo old HP Laptop No issue logging into Schwab until today with old laptop Message says cannot authorize access Firefox is up to date If I change to Chrome; login works Ok Schwab IT person said something wrong with my Firefox

Any ideas ?

I have 3 devices connected to Mozilla account, 2 smartphones and 1 PC and NONE of them are syncing properly, bookmarks sync perfectly and everything else fails miserably. Some part of history does sync but nowhere near the full history. Syncing of open tabs is *completely* broken.

New sites online (foxnews.com, newsmax.com and others) will not load comments. Had to remove shield and try several things. Still a problem. Everything before 146.0 worked. I'm sorry I did the upgrade as all this takes too much time.

I'm simply trying to email someone using the email link on their site.

The link is a mailto link which requires an email application (which I don't have). All I want is to copy the link to the clipboard.

Firefox lets me right click the link and copy the email address, but this doesn't allow me to provide the required Subject specified by the site's author.

I could have sworn Firefox used to have this feature. Netscape and IE certainly always had it back in the day.

Hello, I encountered an issue today where, upon starting my PC and opening Firefox, I found that I had been logged out of every website. My bookmarks, browsing history, and extensions are all still present, and I am using my usual profile. However, all active login sessions were cleared. I haven't changed any privacy settings recently, and I'm wondering if this is a known issue following a recent update or if it indicates a corruption in my profile's cookie storage. Could you please advise if this is a "normal" occurrence or if there are steps I should take to prevent this from happening again?

I look forward to hearing from you. Best regards, Luka.

What is the problem that isn't allowing my emails to load? It was fine until today. My hotmail email (outlook live) is what I use as my home page. Seems to connect, but just blank space where messages usually appear.

My old computer quit working. It had Windows 10 I purchased a new computer form Best Buy. They were unable to retrieve My bookmarks as I had left the 13 digit code to retrieve them. I am home now and have the code but do not know how to use it to retrieve the bookmarks. How do I proceed?