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I've just updated from 115.04esr to 115.11esr for macOS to the heap of unwelcome troubles. This experience is extremely unfriendly and annoyingly brazen on part of the Firefox developers.

Every time I launch the browser it starts up from its default profile, not mine. I lost access to all my themes, extensions, history, devices and settings as a consequence, and cannot regain it.

All efforts to launch FF from another profile upon opening of a new instance resulted in a dialog nagging me to move the app to /Applications even though I always kept it in a subfolder of my choosing, and intend on continuing to do so. Refusing to submit opens the default new Firefox profile in every instance.

Closing Firefox instances is impeded by a Chrome-like first-after-installation closure prompt asking to have the browser warn me every time I'm closing the browser. Repeatedly rejecting the prompt makes no difference.

The flatly blunt and pervasively arrogant manner, in which the new Firefox forces its way, is off the charts and is unacceptable.

Is there a straightforward way of restoring the old behaviour and telling it to honour my settings?

Hi, am getting this error and am unable to use our new PC as this Thunderbird mail app is failing to migrate the profile from the other windows PC. Need your help asap on how to fix this. Not very technical, so need help. I updated Thunderbird to the latest version (115.11.0 32 bit) on my old PC before copying the profile over and loading Thunderbird on this new PC which has 115.11.0 64 bit version.

Uncaught (in promise) NS_ERROR_FILE_NOT_FOUND: Component returned failure code: 0x80520012 (NS_ERROR_FILE_NOT_FOUND) [nsIFile.copyTo]

   _recursivelyCopyMsgFolder resource:///modules/ThunderbirdProfileImporter.jsm:659
   _recursivelyCopyMsgFolder resource:///modules/ThunderbirdProfileImporter.jsm:668
   _mergeLocalFolders resource:///modules/ThunderbirdProfileImporter.jsm:641
   _importServersAndAccounts resource:///modules/ThunderbirdProfileImporter.jsm:250

I imported info from Thunderbird on other computer. Now every time I open Thunderbird on the new laptop it says it can't reach my email server, incorrect login. If I enter my password it repeats the failure message. If I just close the message, the popup appears again, closing it again, it repeats once more, then closing it keeps it gone. Once I get the message to stop popping up by the repeat closings of the message, the related email account has already collected new emails so it was working. For what it's worth, the laptops are both Lenovo, the old is running Win10, the new Win11. Before the Import is was working fine, I only wanted to transfer my contacts, but the export grabbed everything. I don't have the issue on the original laptop I exported the info from.

Hi!

Trying to use Thunderbird to connect to my hotmail account but get an error message that says I can't log into "server" due to the prefs or login details are wrong. Have tried to search around for answers but can't see that anything is wrong. Any idea what to do? Use windows 10 professional.

Thunderbird is not downloading. Email email or feeds. It is. Not downloaded since May 11th. Also your website is i Inaccessible Through any of the browsers, please help.

How can I sign in to Netaddress with the new Firefox update?

I'm afraid that as I am old and female I haven't a clue how all the information below can help. What can I do with it? As I can't access my only email address, I'm not sure how I can follow instructions.

Fingers crossed for some information. At the moment all I get is 'bad request'.

I have a PC that cannot access the Internet. Using a thumb drive, I was going to download Firefox then load it onto the PC. Do you think this will work and if so, how do I put Firefox on the thumb drive (be specific - step by step). Thank you

This is my Mac Monterey. My Windows 10 is in Safe Mode With Networking. The last update will not download. That version is 125.0.3. What's available under Windows updates does not download either. Now I am running my antivirus on my Windows to see if it runs clean. I do not know why I cannot apply these updates.

I have a Thunderbird on my old windows computer. I just installed it on my new computer (and I donated). I could have sworn that I had the import/export tool on the old Thunderbird. I desperately need to move some folders of emails from the old computer to the new one. I can't find a way to do that. I went to a link that said the import/export tool no longer works. I tried archiving the messages in a folder but have no idea where they went. Luckily I could undo that. What is the best way to move these folders of emails to the new computer? It was really easy many years ago.

Firefox automatically updated itself to version 126.0 (64-bit) and it was unable to display any web sites.

First I disabled Mozilla VPN but that did not fix my issue. Next, I disabled Microsoft Defender firewall software to no effect.

Finally I updated the shortcut to Firefox on my taskbar to launch the browser. This fixed my issue.

Hopefully, this will save other users from the same pain.

I have installed Firefox on both my tablet and Phone (Android 13 and 14). I cannot get a QR code on my desktop when I follow the link but I did get a QR code from another source but I was required to give a code on my Microsoft Authenticator but none appeared. I have set up two-stage authentication but am not receiving the required codes. Can you help ?

Thank you

Keith Macdonald

Native manifests describe where native messaging browser extensions can be found, as described here:

https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/Native_manifests#native_messaging_manifests

Specifically on the MSIX version of Firefox available in the Microsoft Store, what directory does Firefox look in for native manifests?

The problem I need to solve is that I need to place a native manifest in a location where Firefox can see it, specifically in the new Windows MSIX installer. This seems to be reasonably straightforward, if I can confirm where that is.

My wife got a new computer and I'm transferring her folders from her old windows 10 computer to her new Windows 11 computer. I have Thunderbird installed on the new computer with her account. Thunderbird on the Win10 comp is 32 bit and the Win11 comp is 64 bit. Both are the same version (115.10.02). On the old computer, in the MAIL folder there is "inbound.att.net" which has her mail files (Inbox, Sent, Drafts, etc.). Should I just copy all the files inside the "inbound.att.net" folder to the new computer?

Is there anything else I need to copy and paste from the old TB to the new TB folder? I'm guess that I will have to at lease copy and paste the abook.sqlite file from the old to the new. Any other folders or files.

Maybe I'm doing this wrong and there is an easier way to do this? I've read the article about moving data on the TB Support page but it doesn't mention anything about TB data from a Win10 32 bit to a Win11 64 bit computer. Will the difference in Win10 OS and TB 32 bit and the Win11 OS and TB 64 bit, be an issue.

Thank you so much for the help.

Hi:

I'm a longtime ubuntu (lubuntu, actually) user, and upgrading LTS versions every 2 years has been pretty easy til now: all I had to do was copy my .thunderbird folder to the home directory of the new system.

When I do that now for the pre-release version of lubuntu 24.04,, the new Thunderbird requires setting up the new profile from scratch, which is a pain, since I use T-bird for multiple accounts.

Is there an easier way of migrating my emails from my old profile to the new system?

Thanks!

Bill

Hi Lots of my files on Mac have converted to Firefox (which I don't use) and will not open either in Mac, Adobe or Firefox. They are showing in my icloud drive but I cannot open them. And I REALLY need them as they are the source files for a website. I have no idea why this has happened, but would love some advice on how to fix it. I don't ever intend to use Firefox so not quite sure how it happened. Many thanks

I've always had my firefox checkmark the "Always ask you where to save files" box. I started to download a file from Envato elements, and firefox asked me where I wanted to put it, so I pointed it to a dropbox folder on my finder level (I'm on a Mac computer). Some pop up showed up that said it didnt like the directory so I hit ok. Then I tried to download again to another location but now firefox won't ask me where i want to download the file to. And instead it just populates a file in the downloads folder called "7gp69ST8.mp4.part" or something similar. If I uncheck "Always ask you where to save files", the whole file downloads just fine to the downloads folder but I dont want that setting, I want the check mark ON so that it asks me each time where to save the file to. But its not asking me any more. So I hit quit on firefox and came back in and the issue persisted. I cleared the cookies and the issue persisted. Please help me fix this.