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On my Windows 11 computer messages keep cropping up supportably from Firefox. I have switched the computer off. this is from my old computer. I don't know what to do now. Colin

"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 caused this problem".

How do I resolve this problem?

Once a week or so, Firefox crashes unexpectedly. The popup indicates its alerting Microsoft of the crash, but apparently not notifying Mozilla.

Once such a crash occurs, I close Firefox. Reopening it results in a crash shortly after all tabs open and I click on something (usually 3 or 4 tabs are open). No matter how many times I let Firefox close and then I reopen it, the crash recurs. The only recovery is a complete reboot of my PC.

How can I get and submit crash reports to support in hopes of getting a resolution?

My version of Firefox wont save History, Bookmarks or Downloads. I've made sure the privacy settings are correct and have tried reinstalling Firefox several times. It also wont let me drag a link from the address bar to the bookmark bar anymore like it used to. Any help with this would be much appreciated... Thanks!

Hello, I have Facebook Container installed (Windows 11) on my desktop. However, if I click a link to a FB page, say in an email or on a webpage, Facebook opens onto the current tab and makes it a container tab. Since I can not go back once FB is opened in the container tab, I have to open a new tab and go back to the original (pre FB) webpage. This is the only time this happens.

What settings can I change so that the Facebook Container opens Facebook into a new tab, not on top of an existing open tab?

Many thanks for the millions of us that are computer challenged.

Bonjour, je ne peux plus me connecter à ma boite mail hotmail.com depuis la version 144.0.2 (64bits) de Firefox Je suis avec Windows 11 famille 64 bits - 24H2 et 25H2 (j'ai essayé avec les 2 versions) avec un compte local. Je choisis de me connecter avec un mot de passe et après avoir validé le mot de passe, j'arrive sur une page qui me dit d'utiliser un autre appareil ou une autre méthode de connexion. Je joins les fenêtres de connexion étape par étape Avec Google Chrome (que je ne veux pas utiliser), je me connecte sans problème à ma boite mail avec les même étapes décrites ci-dessus. Pouvez-vous m'apporter une solution ? Merci, Marc T.

I'm having trouble opening urls in a private window from the command line on Windows 11.

Firefox version: 144.0.2

Starting a new private window works fine with "C:\Program Files\Mozilla Firefox\firefox.exe" -private-window

But doing: "C:\Program Files\Mozilla Firefox\firefox.exe" -private-window "https://www.google.com"

just opens the link in the last selected window if the last window selected is non private it just opens the link there instead of a new or existing private window

I have also tried with no success: "C:\Program Files\Mozilla Firefox\firefox.exe" -private "https://www.google.com"

When using the the chat especially when on either of my laptops. I think it would be useful to be able to minimize/hide the chat but not have it completely close so you can stay in the same session.

In my head I see it working by adding a simple minimize button next to the close button. When it minimizes, the icon for the chat can stay highlighted to alert that it is still active. Also, when switching from chat to other options like bookmarks, history or tabs. If there is a current chat open it should use the minimize behavior so the same chat is still active when you navigate back. So essentially the only time the chat closes or resets is when you close it.

I was resetting my password entered my email code recovery key it didn't ask for my authenticator got an error invalid token then after retrying it asked for email and authenticator but not the recovery key the account now says I have no key

"This profile was previously synced to a different account To keep your data organized and secure, each Firefox profile can only be synced to one account. To sign in using xxx@xxxx.xxx, create a new profile."

So I deleted my old mozilla account since I abandoned the email that it was linked to, but when I tried to sync with my new account I get this. Is there anyway to do this without having to make a new profile?

I tried making a new profile and copy and pasting my profile into the new one, but still get the same pop up. I guess there's something in my profile that says it's been synced before, is there anyway I can find that and delete it or change it?

When I open Amazon's page a splash screen appears that takes up a third of the screen. This splash screen provides keystroke shortcuts. Are you responsible. If HOW MAY I PERMANENTLY ELIMINATE THIS ANNOYANCE?

I have Firefox installed on both my desktop and my laptop. On my laptop, I am able to create and manage profiles; however, on my desktop, there is no option available in the menu (the hamburger menu) to do so.

I have verified that both devices are running the latest version of Firefox, which includes the profile management feature, but I am still unable to access it on my desktop.

у меня стояла функция открытия вкладок из предыдущих сессий, но сегодня я открыл firefox сначало все вкладки были подписаны типа autoblock(или как-то так), я решил перезапустить браузер, в итоге открываю и ВСЕ вкладки исчезли, а у меня их там очень много и я точно не все вспомню, попробовал восстановить через журнал("восстановить резервную копию от" я выбрал от 21.10.2025, но она просто выдало сообщения, что текущие вкладки заменятся, на те, что в резервной копии и больше ничего не произошло) есть ли способ восстановить все вкладки не прибегая к тому, чтобы листать историю вручную?

Hello. I am using Linux Mint 21.3 cinnamon and Firefox 144.0.2 When I use Google maps and the yellow small pointer (cartoon) to go on a specific street, the window come black when shifting to street view. My only extension is disabled, hardware acceleration unchecked, cache cleared and cookies cleared. I have made fresh install and nothing help. Troubleshooting mode allow street view to work fine but normal mode don't work. Google chrome work good. Chromium work good. And finally, Firefox work ok on my Linux mint LMDE 6.

Any idea where to go to solve this issue?

Thanks for your support

André

ZIMBRA sous FIREFOX semble ne pas supporter les mails au format HTML Problème quand je fait suivre (forward) ou quand je réponds à un mail rédigé en HTML. Je n'ai pas ce problème quand j'utilise ZIMBRA sous EDGE. Est-ce un problème connu ? Est-ce une question de réglage ? J'utilise bien la dernière version de FIREFOX...

Help !

When I try to log on to a particular web page using my password, I get an error page. When I do so using the Private browse function it works. Following is the error I get: {

 "callId": "019a1701de257ed0a722da6257f2896e",
 "errorCode": 403005,
 "errorDetails": "Unauthorized user",
 "errorMessage": "Unauthorized user",
 "apiVersion": 2,
 "statusCode": 403,
 "statusReason": "Forbidden",
 "time": "2025-10-24T16:16:29.758Z"

}

Does anyone have any great ideas??

When I sign in to the NY Times (for example) I get a dropdown of autofill email addresses. Some are even mistyped addresses or bogus addresses I've used to access webpages that'll take any email address. I cannot delete these. I've tried shift-delete. These email addresses cannot be accessed via Firefox preferences: autofill screens do not list email addresses but only the physical addresses that I've saved.

(And then, of course, the minute you submit any email to the NYTimes it immediately creates an "account" and starts sending you subscription offers.)

I keep getting 'notifications' from Mozilla Firefox that McAfee has discovered a virus, Trojan, and other things. They come on the lower right corner of my screen and the address d3mj6kghubcc73dtudhg.kaironero.co.in is along the bottom of the notification. The notifications pop up every time I turn on my computer and go into Firefox and they just keep coming after I dismiss them. They are in small rectangles and have Mozilla Firefox written across the top left and say that McAfee has discovered.... Are they legit or are they spam and how do I stop them? I don't have McAfee installed on my computer which is a desktop. Please help--this is driving me crazy!!!