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I'm a long-term Outlook user looking to move from Outlook 2013 (now unsupported by MS) to Thunderbird. I've looked at all Mozilla documentation, as well as Google Search and can't seem to find a full understanding of the migration process. I have tried to manually do so using the Tools>Import in Thunderbird, but I continually get an error message that "the current mail client cannot fulfill the messaging request". (Yes, Outlook is my default mail client).

Also, I'm now seeing the following on my Thunderbird home page: Secure connection failed live.mozillamessaging.com uses an invalid security certificate. The certificate is not trusted because the issuer certificate is unknown.

Can anyone help an Outlook refugee? Thanks in advance.

Julian

I had to purchase a new computer and the set-up did not transfer my account of mozilla thunderbird files and e-mails. I downloaded the mz app and followed the instructions to Set Up Your Email Address and the Configuration was found in Mozilla ISP database. So when I selected Done, the prompt read: "Could not get OAuth2 details for hostname=imap.comcast.net." What do I need to do to retrieve my files and e-mails in the mozilla thunderbird website and transfer them to my new computer? Thanks

A firefox support article told me to reinstall firefox from snap on ubuntu, without mentioning anything about the profile, settings, and bookmarks. Now everything is gone.

Is there any way to recover my local profile?

I don't think it was synced properly with my other devices

I upgraded from 126.0.1 to 127 today. Upon update, all my windows are gone. The only way I could access them is to revert to an older profile backup and reinstall 126.0.1.

I tried exporting my session with Tab Session Manager in 126.0.1 and reopen them in 127, but that only restores the last tab of each window (oddly). The json clearly lists 3 windows each with multiple tabs. I tried copying the sessionstore-backups folder, but no dice.

Symptoms similar to : https://support.mozilla.org/en-US/questions/1446921

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…

Hi folks,

I'd like to obtain some clarity on provenance aspects of Firefox released as a Flatpak.

I see in this article that one of the options is to use flatpak package: https://support.mozilla.org/en-US/kb/install-firefox-linux

Is this article produced / reviewed by mozilla? Is flatpak an officially trusted, backed by mozilla, means of installing firefox on a system?

On flathub one can observe the "Verified" seal which indicates that such package is developed and maintained by original package developers (in case Mozilla). One can also observe in multiple forums here and there that mozilla is the one that builds and maintain this package.

Though a seal is nice, and users opinions are ok, it would be good to have artifacts that would evidence better this relationship. Also, would be good to have this officially stated in mozilla's website, under "Download options and other languages" section, something like "you can also safely install firefox through the flatpak package available on flathub which is developed / maintained / signed by mozilla itself".

Or maybe all of this information is around and i am just not able to link it together.

Thanks

I get the infamous "Unable to connect to your IMAP server. You may have exceeded the maximum number of connections" error in Thunderbird. I just moved to a new Windows 11 laptop but have signed-off the old unit and old phones, leaving just two devices in Google / Security. Obviously, I have reduced the IMAP connections to 1 on the PC. Still, I cannot get emails on this new PC; before reducing the devices, I could get emails on the old PC, the new phone, an iPhone, and an old phone. Turning off the fire wall does not help. I have done many variations of uninstalls / reinstalls on likely combinations of devices. I won't repeat those here but the net outcome seems to be: uninstalled / reinstalled Thunderbird - no effect

shut down new computer and fired up old computer and Thunderbird retrieved new messages immediately

downloaded and installed eM Client - immediately connected and retrieved new messages

downloaded and installed MailBird - immediately connected and retrieved new messages

started Thunderbird and received the too many message.

I just finished a round of installing / reinstalling Thunderbird but with all the AppData/Thunderbird/ folders / profiles deleted. The Wizard failed to identify the server information, which I supplied based on the three sets of working parameters (Tbird, eM, MailBird) but the error this time was a could not connect due to the Username and Password not agreeing.

I don't want to give up Thunderbird but I am out of patience. Please advise if there is some hope for a software fix. I have wasted too much time on this already pursuing a universe of possibilities. Thanks, Don

Cox dumped all of COX email onto Yahoo. I have used Thunderbird for years but now I cannot set up my Yahoo account in Thunderbird. We were allowed to keep the COX address. Possibly the @cox.net is confusing the software. Are there instructions for doing this? Thanks, Alex stantona@cox.net

All of a sudden, I can't download any attachments, no matter what file type it is. I've reset Firefox to it's default, restarted, everything suggested. I don't have the first clue as to what this is.

Dell Inspiron came with OS on a small C: & data on a massive D:. I assumed the Dell-guided migration took care of moving everything necessary to D: ...NOT!!! When C: filled up with data, I was trying to move Thunderbird TB) data to D: & somehow deleted thunderbird.exe. I realized my error when the systray icons for TB, Firefox, & Microsoft Edge responded "Can't open this item." I then accidentally clicked "Y" to "...Delete this item"? When I went to download a new copy of TB, it presented the new user screen. From previous research, I found my profile file and copied it to both C: & D: with a new name to have extra copies. So I have 3 requests 1) What is the safest method for getting TB back? 2) Once that is done, how do I get thunderbird to maintain everything I need on the D: drive? 3) Firefox now works, but all my bookmarks, extensions, etc. are now gone. If that issue is appropriately part of the solution for the above requests, please help me with that as well. I will appreciate your help! Ken Cawthorne

I'm using Ubuntu 24.04 and just reinstalled for unrelated reasons. I'm trying to copy my Firefox profile over from my backup to the new installation.

I used the Ubuntu Snap store to install Firefox and put my old profile in -- this is the one that I was using on my previous Ubuntu 24.04 installation just a couple days ago -- and everything seems fine, but I do see this error message:

[ERROR error_support::handling] suggest-unexpected: Error opening database: Incompatible database version: 18

It gets printed when I type things in the search bar, so it seems related to some sqlite database related to history and autocompletion.

Is there a way to fix this? I'm fine with just deleting it, so long as the other parts of the profile remain.

(This is a strange error, since after all I was using the exact same setup -- Firefox on Ubuntu 24.04, installed via snap -- just a couple days ago, and it was, as far as I know, up-to-date.)

I had an account in thunderbird on my old pc, but i messed up try to move acc to my new pc. Is there any way you can install it with all my folder etc. I did install new thunderbird app ,but when I enter my details it says, login to server imap. virginmedia.com with username homeimprovements2@ntlworld.com failed. I am in my mid 70s and I have only used thunderbird, and hope somebody can help me. Thank You. Bob Smith. UK

I've been using Thunderbird for over 25 years and have always loved it. Recently, my emails are all messed up. When I receive, there are 3 sections: the top shows the From, Subject, and Date as it is supposed to do. The middle section is the problem: it shows all kinds of stuff I'm not interested in, such as Message ID, In reply to, References, User agent, X-Authority-Analysis (which is full of nonsense), and below that all kinds of stuff that makes no sense at all (not English). And the 3rd section is where I respond. How do I get rid of that middle section? All I want is what the writer wrote and what I should reply to. That's it. What happened to T-Bird?

Here is a very tiny portion of that middle, illegible section: <v-dpfdcc_lllpljofc_fkjkddff_fkjkddff_a@bounce.e.traindemocrats.org> from p-impin005.msg.pkvw.co.charter.net ([47.43.26.146]) by p-mtain015.msg.pkvw.co.charter.net (InterMail vM.9.01.00.037.1 201-2473-137-122-172) with ESMTP id <20240607200201.KKSQ3703.p-mtain015.msg.pkvw.co.charter.net@p-impin005.msg.pkvw.co.charter.net> for <advenosa@cinci.rr.com>; Fri, 7 Jun 2024 20:02:01 +0000.

My name is Al Venosa, and my email address is advenosa@cinci.rr.com. Thank you.

For a week or better I have been unable to download anything through my Firefox browser, I have refreshed and uninstalled Firefox (I had to reinstall through another browser) in an attempt to fix this issue to no avail. I cannot download from verified sites, nor am I able to download Firefox's own extensions or themes (when I attempt I get an error telling me to check my connection, screenshot included).

I would like to be able to use Firefox normally again, with the ability to download files and install my extensions restored.