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Mozilla Firefox 115.25.0 (x64 en-US) won’t close since my previous version was updated on 6/29/25. I have tried closing it in my Win7pro Task Manager on several occasions, and had even tried to uninstall and then reinstall it from my “Programs and Features” menu, but I keep getting a message that the program can’t be uninstalled until it is first closed. Nothing I do fixes this problem. HELP

Suddenly getting persistent "Gah. Your tab just crashed" error message this week; running Windows 11 on a Lenovo X1 Carbon 12th Gen laptop; I have run Firefox in Safe mode, disbled multi-process tabs, turned off h'ware acceleration, cleared cache and cookies, turned off BitDefender, Refresed firefox, updated firefox and windows, checked for malware, reinstalled Firefox, and attempted to create a new Firefox proficle (didn't run), all to no avail; attempted to use mozregression, but I don't have the skills. Would be glad of any help! Thanks

We’ve been experiencing ongoing issues with our email accounts:

Several accounts keep showing repeated error messages. Every time we refresh, the error reappears, and we’re unable to send or receive emails. Sometimes it resolves on its own, but the issue recurs multiple times throughout the day. Please see the error screenshot attached below for reference.

When I try to forward an article (to myself or others), I get a message: "Do you want to allow this app to make changes to your devices?" Whatever button I click on, it goes into Set-up mode, though it's already set up on my PC, and getting out of the sequence is difficult, like navigating blind alleys to nowhere.

I get the following error when trying to delete emails:

Messages cannot be moved or copied because writing to the folder failed; to gain disk space, go to file, empty trash, then compact folders.

I have tried this and all trash folders are empty, yet the message remains, I cannot delete, move or receive emails. There are 970 emails in my inbox... I even rebooted several times after doing the above and it still does not work.

What ever instructional help is provided, please include how I can save some of those emails if possible as I don't want to loose them... Right now I have had to go to spectrum to be able to read any incoming emails. Thunderbird is bricked....

Please help...

Thank you

when i oppened tbird on windows 10, it showed a page to obly my for a donation. i had made a donation short ago, but eventhough, i just made another one time donation. when i open tbird again, i can not get out of the donation page. what should i do please???????

hello! Firefox began timing out and needed to be force quit starting yesterday; I didn't think anything of it until I reopened and Firefox continued to be unusable. It's not frozen or unresponsive, but it won't load pages or complete actions. I can interact with the browser and settings, etc, access about:crashes, but I can't actually submit crash reports; it just loads endlessly. When I close the program, it won't complete that action either; the app remains running in the background until I force quit.

Things I've tried:

Restarting the computer Uninstalling and reinstalling Firefox Clearing the cache

Other browsers work fine, as does the rest of my machine and internet. I'm submitting this using Safari because I can't navigate here using Firefox, but would really prefer to get back to my browser of choice.

Attached are the IDs of a few of the crashes I've had; they remain unsubmitted, sorry, because (as outlined above) I'm not able to complete the action when submitting them.

I default to using private browsing on Android. However, even with having one tab open(no tabs open in normal browsing) firefox consumes way too much resources after a while and only having one tab open (>2.5 Gb of ram).

I noticed that normal browsing caches itself when it is not active on screen while private browsing keeps running in background and memory usage keeps going up by the second. Attached are screenshots of memory usage going from around 250mb to 2.5gb in couple of minutes. All I had open was a single tab!!

For >20 years I have used Thunderbird as my email reader for various email accounts on my mac laptop. Last night Thunderbird stopped downloading emails from my yale.edu account. I tried removing the yale account and reinstalling it unsuccessfully. See attachment. The Yale IT rep told me that Yale very recently added security features that are probably preventing Thunderbird from working with it. They told me to use the Outlook app. Is there anyway I can get Thunderbird to work with my yale.edu outlook email account?

When I select a folder with the columns and column widths set the way I want, then do "Apply current view to > Folder and its children > Local > Local" Thunderbird applies the view to some, but not all, folders. Even if I target a problem folder and explicitly attempt to apply the desired current view to it, it doesn't work. If I create a new blank folder as a sub-folder of a folder that *does* accept current views, I can't apply the current view to the sub-folder. It retains what appears to be a default view.

I can't see any difference between folders that accept "current view" and those that do not. Any suggestions? Or is there a way to set the default view (i.e., columns and column widths, not just sort order) for new folders?

When using any Microsoft 365 product on the browser I keep getting a prompt to "Please sign in" although I am already signed in. I can click the Sign in button and a about:blank page pops up for a split second. Then within a half hour or so, it will pop up again. I deleted my cookies but the problem still persists. Does not happen on other browsers.

Não consigo abrir ou visualizar as mensagens em nenhum das pastas após atualização da versão 128.0 pois as mensagens (repositório/armazenamento) estão em um servidor na rede, apenas quando as mensagens estão na máquina local as mensagens são todas visualizadas. Instalei a versão 115.9.0 e apenas nessa versão para trás que é possível visualizar as mensagens com seu repositório no servidor de rede.

Hello.

I use Firefox on an computer with Ubuntu, (installed as snap) and have noticed that since the update to version 140 (specifically, version 140.0 canonical-002-1.0), closing a tab causes a noticeable delay : that is, upon any action that would close a tab (clicking on the cross, pressing CTRL+w, or middle clicking), there is a delay of about 200 to 300 ms before the tab is actually closed.

However, during this delay, the window still responds to inputs, leading to rather annoying situations. For example, during regular usage, I usually open a great number of tabs. When I am done with browsing, I close them, by repeatedly clicking the cross button on the tabs. It used to be that the tab under the cursor would immediately close, then the next tab would slide under the cursor, and I would click again to close that one, etc.

But now, when clicking the cross button, the tab is not closed, and when I click again after a small delay (because of muscle memory), the tab is still there. This cause the two single clicks to be treated as a single double-click, which for some reason puts the window in full-screen mode (but only with the snap version; I'm not sure what's going on here).

When using CTRL+w when closing tabs, the delay is still there, but the inputs are correctly handled. If I press CTRL+w three times at the usual rate, I can see the three key presses, then nothing happens for a few instants, then the three tabs close at the same time (i.e. the delay is from input to tab close, not from tab close to other tab close).

This behaviour is completely absent on Firefox (also version 140) on my windows computer.

This delay does not appear when creating tabs, and it does not occur either when closing the window or when closing the last tab in the window (leading to an amusing situation where shutting down Firefox is actually faster then closing a tab). These operation keep going at their previous speed, immeasurably fast to the human eye.

Navigation does not appear to be meaningfully slower than before the update, and the CPU/memory usage is very reasonable.

Curiously, this appears to be a fixed delay. Closing an empty tab takes the same time as closing a very busy one. Closing a tab when there are five takes the same time as closing a tab when there are thirty.

This issue makes browsing feel incredibly sluggish.

Is there a solution for this problem ?

Edit 1 : I have tried to run Firefox in troubleshoot mode, but there was no difference in behaviour. Edit 2 : Fixed typo. Edit 3 : Added exact version. I also tried to refresh Firefox, but the issue remained. Edit 4 : The problem is still present in version 140.0.1 canonical-002-1.0. Edit 5 : The problem is still present in version 140.0.2 canonical-002-1.0.

How do you stop auto refresh while on Facebook website? I'm using Firefox for Android and I access my SocMed accounts via websites no resource giving app. With that said I guess FB has page refresh enforced into the it's HTML and it's very annoying. I've set my PC browser to block auto refresh but can't find a solution for Android.

Since recently 1~2 version, my Firefox keeps consume large amount of memory and release it repeatedly

Even I restart Firefox and do nothing, it will start doing this again

I use about:processes and about:memory to capture this seems the main process's "tab.query" causing this, please check

PS: sometime it will consume till system max (64GB) and cause my OS out of memory. PS2: that wave-like memory usage is cause by Firefox

I am moving thunderbird account to a new computer. After downloading and getting to login screen, I click 'done'. The programme only starts to re-assess/re-test the config. This happens whether manual or automatic configuration is chosen. When I click 'done', it only goes to find the config again. It does not begin importing the profile/account/emails.

I waited a few times ... so it could download the emails/profile/account - nothing happens. No 'progress bar' appears.

How do I get the programme to begin loading on this computer? Thank you in advance

As of July 1st I'm unable to open www.funnyjunk.com on firefox I can do it through chrome or a 3rd browser on my phone and a friend who uses firefox can do it too. I have DNS over HTTPs settings disabled, troubleshoot mode and private window didn't change anything. Afaik I haven't installed anything new between my last successful and first unsuccessful attempt.