Forum der Gemeinschaft Firefox

When attemting to sign in to ATT after today's update (11/18/25) I receive a message: an error occured during a connection to oidc.idp.clogin.att.com PR_END_OF_FILE_ERROR. I had no problems logging in prior to the update. Ho do you (or I) fix this?

I just updated my browser less than a week ago. Today I got another notification for yet another update. This logs me out of everything.

WHY so many and so frequent are firefox browser updates. I am about to stop using this brower if it continues. It's very disruptive!

Thank you for your attention to this.

I live in Northern Ireland which is part of the United Kingdom. The full name of the UK is as follows "The United Kingdom of Great Britain and Northern Ireland". When I select my country as UK, Firefox changes it to GB. Northern Irland is not in GB. Great Britain consists of England, Scotland and Wales.

I've included a gif of the issue. I'm not sure how to "replicate" it.

I have Material Fox Updated installed, and I'm unsure if it contributed to the problem, since I see other threads about this issue as well.

I've tried removing extensions to no effect, so I assume none of my extensions are contributing to the issue either.

I think that this recent update removed all of my tabs and tab windows, it has done this before and I don't understand why, I have the old update session file still (The 11/11/2025 One) and I tried to use that one to bring the tabs back by putting the file in the sessionstore-backup folder with no other file in it, but they didn't come back. I am genuinely confused as to why it doesn't work, I have renamed and deleted sessionstore.jsonzl4 files but it still comes up as a new session.

I own the domain name sabbathcalendar.com which is redirected to my website at sabbathcalendar.org. Firefox consistently gives the following message:

"Hmm. We’re having trouble finding that site. We can’t connect to the server at www.sabbathcalendar.com."

It doesn't matter how I enter the URL. When I simply enter "sabbathcalendar.com" in either Brave or Microsoft Edge, both browsers will immediately connect to my website at sabbathcalendar.org with no problem.

This is the message I get when I try to access my Bookmarks: "The bookmarks and history system will not be functional because one of Firefox's files is in use by another application. Some security software can cause this problem." I have already tried to find out from Microsoft if their latest reinstallation of Office Professional could have caused the problem. They say they have nothing to do with Firefox. How can I get my Bookmarks and History back?

Although set to open previous pages and tabs it doesn't do so, furthermore I must sign in to all e-mail accounts, google, Facebook etc every time I open my Firefox Developer Edition

I have performed every suggested check that comes up when I put this question to the big wide web,but cannot find the solution. Castanet.net will load, but not open any secondary sites on windows 11,but it will on Chrome on my PC. My laptop with windows 10 has no issue. This has been going on for months and I am ready to just "fire" firefox for good.

whenever I switch between applications the menu bar will toggle itself on when I switch back to fire fox before immediately going away after clicking anything in a tab. this is really annoying and nothing I have tried to keep it disabled has worked. its honestly very frustrating. pressing alt does nothing, turning it off manually does nothing because it turns back on and then off when I switch applications. turning off different extensions does nothing either.

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After trying suggested "fixes" still unable to get bookmarks restored on my Firefox account, and can't add any new ones either. Should I reinstall Firefox?

A month ago I downloaded Linux Ubuntu 24.04.3 onto my Microsoft Surface Pro. Was never able to get the touch screen to work, but, the printer worked fine. After the recent Firefox update, however, I am unable to print. The preview page does not load. Not tech savvy, here, definitely not an administrator. How do I fix this? Thanks for any help.

out of nowhere my firefox bookmarks no longer appear. I am getting the following msg "'

The bookmarks and history system will not be functional because one of Firefox's files is in use by another application. Some security software can cause this problem.

In an attempt to fix this problem, I have done the following:

• closed the browser and re-opened it
• rebooted my computer
• reinstalled my security software
• uninstalled firefox
• Reinstalled firefox

None of these steps have fixed the problem??????

Any ideas would be appreciated!

popped up after an update, not only is it slightly distracting but also annoying as now when i try to pick up or select a tab by putting my mouse at the top of the screen it does nothing, as i select the useless black bar instead