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1. Every time I open my mailbox I have to log in. Before I did not need to log in. 2. Every time I send a e-mail I have to log in. Before I did not need to log in This problems started about 2 weeks ago

I have been using Thunderbird on my computer for many years to handle my several gmail accounts. For the past few days I have been locked out of my main account - wbbtov@gmail.com - and have not received any emails since 15.28 on 14th October. emails are still coming through to that account on my mobile phone, but not to my computer (Windows 10). When I open Thunderbird on my computer, I get a message in a black box saying 'Thunderbird. Authentification failure while connecting to server imap.gmail.com.' I have reset my Google password for wbbtov@gmail.com via Google (it took 2 days) andf have entered the new password in the Thunderbird settings menu for the account and the imap setting, but cannot for the smtp setting, which remains that generated for the old password when I set up the account on Thunderbird. Can you please reactivate my wbbtov account? Thank you fort anything you can suggest. WB

I've just returned from a couple of months away, and want to access my emails on Thunderbird on my desktop. This is the message i get:

Login to server [...] with username [...] failed.

I've contacted my provider who say the issue is not with them but with Thunderbird. As I can access webmail ok I presume this is correct.

I have tried Troubleshoot mode, but that hasn't helped. And I've tried restarting the computer.

Any suggestions would be most gratefully received.

Thank you!

Tbird pops open a browser like new window with a google url and a Sign in page (see screenshot). Pressing the next/submit button immediately shows an useless error page from Google (see other screenshot).

I removed the account and tried to re-add it, but it's the same problem.

I use Thunderbird to manage my personal Gmail. After changing my Google account password, I had to go through the authentication process. At first, it failed with the message: “Cookies are not enabled. Try again.” On my main PC (Windows 10 Pro), I tried several times to set up my Gmail account in Thunderbird (profile changes, uninstall/reinstall), but without success. After those attempts, Thunderbird stopped showing the “cookies” message, and every setup attempt now ends in a blank (white) page: either just before the second-factor authentication (2FA), or — less often — right after the 2FA is completed. This behavior continues even now that cookies are properly enabled. The first Thunderbird version I used was 142.0, but I also tried 115.13 and 140.2 ESR with the same result. In all cases, the process always ends with the blank page, and the account setup never completes.

Thank you in advance for your help.

I do not have the password to my Thunderbird Mail in current laptop. I think it will be needed when I start up a newly bought laptop where I will include Thunderbird Mail. What can I do?

Every time I start-up Thunderbird, a series of 2 pop-ups from Yahoo open up: [ Sign in using your Yahoo account ]. I close the pop-up and a 2nd one pops-up. I close it and say 10 or 15 mins they pop back up in the same series. It's very frustrating. I can't tell if it's Yahoo or a scam cookie. I notice the URL at the top of page and it's the same one every time and every day. The same URL shows: "https://login.yahoo.com/?src=thunderbird&client_id=dj0yJmk9NUtCTWFMNVpTaVJmJmQ9WVdrOVJ6UjVTa2xJTXpRbWNHbzlNQS0tJnM9Y29uc3VtZXJzZWNyZXQmeD0yYw--&crumb=uE2cxQuNxpE&login_hint= ..." <... it goes on for a few more lines. It's long. I went to Firefox and cleared all 'cache' and 'cookies' and they still pop-up in Thunderbird. Heck, they just popped up again while writing you! How do I stop this intrusion while using Thunderbird? Thanks, RonD

I have a dual boot laptop. It came with Win 11 installed and I added a new ssd with an old Win 10 system, which had Thunderbird configured. The win 10 system worked fine with outlook and I saw and verified the password. I upgraded the Win 10 to Win 11 and it all continued to work fine. I again checked the password stored in Thunderbird. When I tried to set up the same account in Thunderbird on the "as installed" Win 11, it fails to pass authentication. I have no idea why since I have checked the password in the "old" system and used it in the new. I have tried using the menu option "New Account" and the submenu option for "+ New Account" within the "Account Settings" menu item. Both seem to take me to the same automatic process - which is what is failing. I can't see what, if anything, I'm doing wrong. Any help much appreciated. The laptop is a MSI Katana AI B8VE (using AMD Ryzen 7 8845HS.

Have been running classic Outlook email in Win 10 for years, with a blueyonder.co.uk (Virgin) email address. Now moving to a new PC running Windows 11. Tried to setup Outlook email in Win 11, but Outlook keeps telling me that my blueyonder address doesn't exist though I still get emails on my phone and my old PC running Windows 10. Given up on Outlook and advised by a friend to try Thunderbird. Now trying to setup Thunderbird. It looks very hopeful; it found my Virgin account and setup corresponding server settings, but when I click on "Done" I get the message "Unable to log in at server. Probably wrong configuration, username or password." I have checked my password by signing in to Virgin, where I can see my emails. Dave.

It's outrageous suddenly being locked out of mail box . It contains QC N° of locker containing a food parcel I need to pick up to day.!

I am 87 years old and do not understand what I am supposed to do!!

Just installed Thunderbird 143.0.1 (aarch64) on a new Macbook. First email account set up OK, although I can't remember how. Tried to add a second account, and cannot find a way to enter the password; there's no place to do so. This doesn't make sense. Machine is of no use if I can't get emails :-)

Rog

皆様、はじめまして。 先日、ThunderbirdにGmailアドレスも追加登録しました。 が、パスワード変更が必要になった為、Google で Gmail のパスワードを変更した後に、Thunderbirdに登録しているGmailアドレスでは受送信出来なくなりました。 従ってThunderbird での Gmail送信エラー画面でパスワードを変更しようとしたのですが「新しいパスワードを入力」への入力を受け付けてくれませんでした。 更にパスワードリストで変更出来るかとリストを出そうとしましたら、Thunderbirdがユーザー名とパスワードを聞いてきました。 でも、ThunderbirdはＰＣが変わっても、ダウンロード、インストールさせて頂くだけで、メールアドレス等の設定をすれば使えますので、敢えてユーザー名やパスワードを登録した記憶がございません？

結局、「その他」を選んだらPINを入れることによってパスワードは見られたのですが。 後でパスワードマネージャーのリストを見てもThunderbird は載っていませんでした。じゃあ、パスワードマネージャーは何というユーザー名を入れたのか？判らず気になります💦

Thunderbird が「メールアドレスのユーザー名」でなく？、単に「ユーザー名」と聞いてきた場合、何を入力すれば良いのでしょう？ 登録した複数のメールアドレスの中のどれかを入力すれば良かったのでしょうか？

その後、Googleから本人確認をしてきましたので、Gmailのパスワードを入れ、スマホで「はい、私です」をクリックしたら、ThunderbirdでもGmailの受送信が出来るようにはなりました。

ただ、もし、Thunderbird ソフトに対するユーザー名とパスワードがあるのなら、なんとかしないといけませんので、お尋ねしております。（初めてThunderbird を使わせていただいた頃のメールアドレスはスパムの為に削除して無くなっております。）

よろしくお願いいたします。m(__)m

I've been using Thunderbird for year on my desktop. Just got a new one and I can't get Thunderbird to start. I have NO IDEA what the "set-up" wants from me. The most recent error is "Authentication FAiled. Please check the username and password."

I JUST reset the password. What does Tbird think my user name is if it's not my name???? And why doesn't it give me an option to find out what it has stored somewhere for me??

After changing my personal gmail password Thunderbird wanted to verify but got "400. That’s an error. The server cannot process the request because it is malformed. It should not be retried. That’s all we know."

The process worked on another PC on version 140.2.1esr but not on my desktop using version 140.3.....

How can I revert my desktop to version 140.2.1esr?

Unfortunately my laptop crashed with windows 10 on it. I have since had it fixed with windows 11 installed. However when I try to sign in to my Sky email account through Thunderbird (imap.tools.sky.com) my password fails. I have signed into my sky email separately (they use Yahoo) with the same password and the same password works fine so I can get into my email account with no problems that way. I am now stuck as I am using the correct password but Thunderbird is saying that the login has failed. So I am asking how can I solve this.

Das Thunderbird-Mail-Programm war hervorragend. Leider finde ich nichts mehr davon wieder, da ich sofort bei der Anmeldung gesperrt werde. Und alles in englisch, ist für mich unmöglich. Ich bin 86 Jahre alt und stehe nun vor einem leeren Raum um meine E-Mails zu empfangen. Können Sie mir helfen? Mit freundlichen Grüßen Fritz Siegmann siegmann-fritz@t-online.de frisieg136@gmail.com

I've been using Thunderbird 140 esr on Windows 10. I got a new computer with Windows 11 and decided to go to the Release channel for Thunderbird which is at version 142. When I try to set up my ATT/Yahoo account, it fails "Unable to log in at server. Probably wrong configuration, username or password." If I go to the manual setup, the authentication method I used for TB 140 on Win 10, OAuth2, isn't one of the options. How do I get that option back? I tried unticking the Create Accounts in the new Account Hub, but that didn't help. I also tried uninstalling 142 and installing 140 esr on my Win 11 box. It has the same problem: No OAuth2 option.