Firefox Community Forum

At your recommendation I signed up to Ad Avoid and now FireFox tells me that I could/should not access BT.Com because of the certificate issued by Ad Avoid

Apologies if this is the wrong place to ask this because I'm at my wits end on this one. I work on an app that is used by a large amount of users. Starting october 14th around 7am (UTC+1) we started observing weird behavior where a small ammount of traffic (less that 1%) would have abnormal header values:

'custom-header-1':'[custom value], [custom value of a different header]'; 'custom-header-2':'[custome value of header 2], u=4'; 'sec-fetch-site':'cors'; 'priority':'same-origin'; 'sec-fetch-mode':'empty';

As you can see the values of these headers are mixed with one another in almost a deliberate manner (since it appended the u=4 with a comma separator and a space from the priority into the custom header 2 value). There is nothing in the client code that would do this kind of manipulation, and from examining the logs this only happens on Mozilla browser traffic starting version 144 (which was released on October 14th coincidentally). Not that this does not impact all Firefox traffic. In fact, just a tiny fraction of traffic from random users and it's not even all of their traffic of an active session. Just random requests that then fail, are retried and the abnormal headers are gone.

I doubt the fault lies in firefox. If I had to hazard a guess it's probably some extension acting up, but the timing coinciding with the release of 144 give me the only troubleshooting path I have right now since contacting the users is not possible. We've seen it happen 145 as well.

I'm not really looking for a solution here, just a shot in the dark if someone else has experienced this or has some insight as of what this could be.

Since downloading the New upgrade today I cannot access anything! TAb crashes everytime. Wish I could go back as have used firefox for years and will now have to find alternative. Have had use the dreaded chrome to post this!

This is where you describe the issue in detail.

Explain what’s happening (e.g., “Videos keep freezing after 10 seconds”).

Mention when it started and what you already tried.

Include your Firefox version (you can find it under Menu → Help → About Firefox).

Hi! So I just installed firefox and I got onto annoying issue. I like using shortcuts on my homepage, but I started to get some shortcuts added automatically and they bother me a lot. I tried removing them or deleting from history, but as soon as I click the button, one shortcuts gets removed and immediately gets swityched with another one automatically. So I'm stuck in the infinite loop of removing shortcuts and my manually added ones just get lost in all this mess.

How do I get rid of new, but stupid vertical sidebar? I do NOT NEED OR WANT even MORE junk taking up the screen space. Is Mozilla part of Microsoft now? How do I get rid of that junk?

I don't have access to the primary email to do anything. I do have the secondary email entered but it's asking for a code from the primary email to change it, like I mentioned we don't have access to. Is there any help for this. Hate to lose what we have.

At about 9 AM EST, 11/12, Firefox did an update that rendered accessibility through my voice navigation software inoperable. I need to use this to navigate the web due to disabilities with my hands. The system could no longer recognize any thing buttons or words on webpages, including the Firefox tabs at the top left of screen. I posted a question about this on 11/13. Later that afternoon, the functionality was restored. However, this morning, 11/13, this functionality has vanished again. Can this please be restored? Something obviously went awry in the coding with this most recent update. Thank you.

Hi. Both my wife and I are experiencing page load problems on Firefox in the last 24 hours or so.

Many pages, but not all, are loading very slowly, and sometimes taking minutes. The spot in the tab keeps moving (left, right, etc), and when it stops, the page is loaded or in some cases just totally blank. On one occasion the was a message about, i think, a protocol error.

We are both on separate Windows 11 machines, rinning Firefoz browsers v145.0, and it seems that the problem is since the upgrade. We use different Anti-virus software. I have cleared all cached data and disabled the only extension added, namely Lastpass.

Attempting to load the problem pages in Chrome works normally. (e.g. https://developer.wordpress.org/plugins/)

Is there a problem with this version, or is there another explanation?

How do I confirm that the AI that was recently put into the browser is not working? I want nothing to do with this technology, if it is not able to be disabled then I will switch browsers.

I was experiencing that one bug that locks the sidebar from opening on hover (even with the option enabled) and I was somehow able to change the size of the sidebar while trying to get it to start working again (IDK why I didn't just close and reopen my browser because I know that fixes that) and now my open on hover sidebar is the biggest it can go and it is genuinely unusable. I can't change the size of it while it's on the open on hover option, but changing it back to the fixed/static sidebar and then editing the size does not carry over when I re-enable the open on hover option. Objectively, this is really dumb and kind of hilarious. I know I am dumb for this.

Hello there, today was released a new version of firefox. downloading it not only crashed my computer, it also removed all my history and bookmarks. is there any way to revert this?

Hello Since last update (145), I'm experiencing an issue where Firefox becomes unable to access the internet following a temporary loss of connection during the normal use, until I completely quit and reopen the browser.

I'd appreciate any advice on how to resolve this.

Thanks

do know computers very well, have used firefox for all my web browsing, firefox kept crashing according to screen so it opened saved apparent older version and I lost all my bookmarks and passwords, please help

My browser has been hacked by searchingswift.com, I've read all the article's I can find on getting rid of it with no luck. I've completely uninstalled everything including the mistake that brought it in (Coverseen miss pick file), but no luck.

Here's what I get after a complete reinstall and deleting any Firefox stuff I can find.

"https://searchingswift.com/?path=firefox/newtab&u=ee6fb4108559ab17&subid=11119&channel=1"

I'm getting ready to do a backup from a month ago, but I'm not sure if this will come back in with my Firefox sign in.

Windows 11 and New Firefox

i'm not connecting to my web site www.kroger.com something has me blocked . i tried everything to get in the message says secured connection failed . i called kroger stores and they said it is an internet problem .

Since a month or so, Firefox browser freezes when playing youtube videos. Simply closing the app and restarting won't do the trick, I am forced to open the WIN Task Manager and manually "end task" before I can watch youtube videos again ... until an hour later, or lucky a day later, the same drama unfolds. I run the newest version of each, Firefox and Windows 11. No new extensions or plugins have been added recently. What is to do here? I'm since Netscape on this route and would hate to switch to another browser... :-) Thanks in advance!