Firefox Support Forum

For a while now, I've been having recurring issues with Firefox desktop freezing and becoming totally unresponsive. If there's any pattern to what causes it, I haven't been able to notice it; sometimes it happens as soon as I open the browser, sometimes it happens after several hours, sometimes it happens twice in ten minutes, sometimes it happens twice in a few hours (however, I can count the number of days it's happened less than twice in one day in the past few weeks on the fingers of one hand). When the browser freezes, it becomes totally unresponsive - it doesn't fade or display "Not Responding", and Task Manager shows nothing abnormal, but it doesn't accept any input at all, any video or other animated material that may have been displaying freezes, and it can only be "fixed" by force quitting from the task manager and reopening. This is exclusively a firefox issue; other programs open at the same time as the browser freezes are not affected.

The only real lead I have as to what could be going on is that sometimes, things don't freeze all at once, but in a cascading effect. For example, tabs, bookmarks, etc. might not highlight when moused over, but still accept the clicks, or selecting another tab might causes the address bar to display the URL of the selected tab, but the screen displayed in the window will not change. Once these cascading changes start, they generally progress to total freeze before I have a chance to do much with that information (only a few seconds), but it's unusual enough behavior to be worth noticing.

Things I've already tried that haven't fixed the issue:

• Reducing the number of tabs used and otherwise reducing Firefox's system resource usage has not impacted the problem in any way.
• Running in Troubleshoot Mode has not had a consistent effect on the problem (the most recent time I did, the browser ran stably for longer than I could stand to use the internet without my ad blocker, but this is only one data point in an already inconsistent spread; prior instances of the problem have occurred in Troubleshoot Mode)
• Disabling hardware acceleration has not fixed the issue.
• The issue has persisted through multiple refreshes and at least one full uninstall and clean reinstall.
• The issue persisted after creating and switching to a new profile multiple times.
• The issue persisted after renaming places.sqlite
• The issue persisted after clearing cache and cookies multiple times.
• The issue persisted after clearing downloads and history.
• And very likely some other stuff that I'm forgetting, I've been trying to fix this on my own for a while now.

All of a sudden my web address bar at the top of the screen disappears when I open a web address and I have to push my mouse to the top of the screen to make it appear? Didn't used to do this.

Why is Firefox backing up my bookmarks in a json file, when Firefox itself doesn't recognise the file type when trying to restore said bookmarks? I WAS able to restore my bookmarks by converting the json file at https://www.jeffersonscher.com/ffu/bookbackreader.html. But why can't Firefox just back up as an html file like it used to? I had to go off searching the internet for a solution, turning what should've been a 5 minute job into nearly an hour 😕

There is an 8 years old question about it - https://support.mozilla.org/en-US/questions/1123903 How do I do it now with Firefox 125+ ?

Hello,

I'm a web developer working for the public radio show This American Life. We have a web audio player on the website and recently I noticed it stopped working in Firefox. Looking closer at the issue, I realized that Enhanced Tracking Protection is blocking one of the scripts (pdst.fm - Spotify). Because ETP is turned on by default, I'm hoping there's a way to help bring this part of the site back to functioning without bypassing the Spotify script, as currently that's out of my power. Any help would be appreciated.

Thanks very much, Mark Nicola

I'm using Firefox 126.0.1 (64-bit) in Windows 11. I needed to download two files named index.html (in different source directories) from my company's content management system. Both got downloaded as index.htm. They were the right files... only the extension was changed.

I spoke to the person who maintains the content management system. They tested it and said it's not doing that, must be the browser.

That sounds fantastic to me, but I looked through the support messages here and found several about files whose extensions were changed on download; for example from .loa to .mp3. No explanations or workarounds, though.

Can anyone shed light on this?

Recently installed a "cleaner" app called PrivaZer. Ran the app and rebooted as part of the process which also included creating a restore point. Once system rebooted and logged in, pinned tabs were gone?! Using the created restore point did NOT restore the pinned tabs. Is there a way to recover the pinned tabs? Thanks in advance. FRANK

We have a W10 workgroup using an unmanaged switch to hook 5 PC's together through hardwire ethernet. The switch is also the access point to the internet "modem".

I would like to cause the PCs to use wifi to access the modem ONLY for internet and Thunderbird, with the workgroup remaining on the wired system.

With both "networks" enabled in W10 the PCs are automatically defaulting to whichever method was enabled 1st. I have no idea how or if I can "split" the flow and cause FF and Tbird ONLY to use wifi.

There should be a feature where you can copy the link to particular text on a webpage (much like when you click on a Google result for a certain part of an article). Where do I suggest features for Firefox?

When I go to Settings > Privacy & Security the only "autofill" setting is to import data from another browser. I am signed in, in the US, and my VPN is set to Seattle.

If I open a second tab on the screen it says the connection has crashed and keeps doing it if you try again. If you reset it resets Firefox including the other tab.

My old hard drive died I couldn't recover it. I cannot mount the disk to another OS etc. The session files cannot be retrived. However I had over 100 tabs open in Firefox I want to retrieve before the disk crashed. I was signed in to firefox all the time in the old computer.

I now have a new computer, I signed in to firefox and I can recover the bookmarks. But I don't see any option to recover the lots of tabs and sessions from my previous dead disk. It seems there is tab sync options between 2 devices that is concurrently signed in. But I can't sign in to a dead disk. I also can't recover the file.

How can I reteive my old sessions with many tabs? I'm hoping firefox have a way of knowing all my tabs since I was signed in and sync before the disk crash.

For some reason I notice that some of our image files, viewed after opening an online pdf document with images within, shows random white horizontal lines. This is not shown using edge or chrome. you can go here to view https://mcclone.net/wp-content/uploads/2024/05/Connects-Issue-12.pdf.

Any help would be appreciated.

Thanks Chris

Running Win 11 Pro with the Firefox - 64 bit - All updated per June 9th.

ISSUE: Website tells me I have an 'add blocker' or the product 'addblocker' installed. I don't. However I get blocked even viewing my own website: fleksjobbernetvaerket.dk .... and others as well.... It's full of Google ads.

SOLUTION: I searched for how to solve this, but none of it is working, not even re-setting or re-installing Firefox, emptying cache, files and folders. I kinda gave up on this.

Hope you can help.

thanks Knud

Hello,

I have tried to find solutions to this and have not found anything to be a permanent fix. I recently have found my FireFox browser closing my first attempt to open and upon opening my second attempt Firefox will open but give me a pink address bar with a robot stating "browser is under remote control (reason: Dev Tools)" and the only thing that seems to get rid of this temporarily is going to my control panel (I'm a windows user) and toggling the remote assistance checkbox (I keep it unchecked since this problem has occurred). Then after re-opening Firefox again, it appears to work normally - no pink address bar with robot. Is there a permanent fix for this? Is it an OS issue or a Firefox issue? Maybe both? Any insight would be greatly appreciated. I am fairly tech savvy, but not too familiar with browser interfaces and solutions involving the command line.

Thank you,

as you can see in the screenshot it says the mic is only"allowed temporarily" and when i go to permissions it doesn't let me add a site to grant perms i can just search for sites and thats it. its annoying cuz on textnow i have to keep granting perms

Varovanie: možné bezpečnostné riziko Ako to napraviť, ďakujem Aplikácia Firefox rozpoznala problém a stránku poradenstvo-mikulas.lepsiweb.sk nenačítala. Webová stránka je buď zle nastavená alebo hodiny na vašom počítači nejdú správne.

Pravdepodobne stránke vypršala platnosť certifikátu, čo bráni aplikácii Firefox bezpečne sa pripojiť. Ak sa napriek tomu rozhodnete stránku navštíviť, útočníci sa môžu pokúsiť ukradnúť vaše informácie, ako sú heslá, e‑mailové adresy alebo čísla platobných kariet.

Čo s tým môžete urobiť?

Tento problém je pravdepodobne na strane webovej stránky a vy ho, bohužiaľ, nedokážete vyriešiť. O probléme môžete informovať správcu webovej stránky.

Ďalšie informácie…