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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.

I have multiple gmail accounts set up on Thunderbird. They were all working fine until I traveled overseas and came back. Then, all of a sudden, 1 gmail account stopped working. The rest kept working fine. I checked the settings and they were correct. I removed the account and tried to set it up again (about 10 times), but kept getting the same error message: "Unable to log in at server. Probably wrong configuration, username or password." The automatic configuration passed and I even tried manually configuring to the recommended settings to no avail.

The only thing I can think of is that when traveling overseas and trying to get online, Thunderbird and/or Gmail asks for further security verification, and I just avoided using Thunderbird altogether while abroad. Upon my return, I started getting this error message. It is extremely inconvenient to have to use the Gmail interface for only 1 email (my main email!). Does anybody know anything I can do to repair this? I'm almost tempted to use another email client altogether to make my life more efficient as the new setup is not sustainable.

I was using Thunderbird email client software quite happily for several hours, when it suddenly gave the message for one of my accounts: "We can't sign you in Your browser is currently set to block cookies" (it isn't!!!!)

I have tried deleting the email account and re-instating, but I get the message during that process. Using: Windows 11 Home Thunderbird v 140.2.0esr (64-bit)

The account works perfectly on Office 2019 on my laptop and via Aquamail on Android.

Help, please.

Hello,

         Thunderbird 142.0 - to add a mail a/c - auto add fails to login and no manual setup seems available.

Simultaneously login passes to an Outlook e-mail with a written password available. Thunderbird auto seems unable to pass that and so fails to add Outlook e-mail. All commentary welcome. Colin DB

Hi,

I am trying to setup Thunderbird for the first time on my mac (OS Sequoia 15.6.1). No problem with E-mail clients except the hotmail client. I am always stuck at this error message that authentication failed after I type in my password. I added manually an outgoing server for microsoft as described in some older post but I am unable to find to setup IMAP manually in the Thunderbird account settings. I believe I will have only the option to do so after I pass the authentication error. I also added some exception as recommended in some older forum post but it also didn't help.

Any suggestion what could solve the problem?

After downloading Thunderbird for Android onto my mobile, I imported email accounts and settings (all, including passwords) from the desktop´s Thunderbird to the phone´s Thunderbird by scanning the desktop´s QR codes.

I got all the accounts and messages onto the mobile but not the primary password. On the desktop I still have to log into Thunderbird but not so on the mobile. There is also no way to set a primary password in Thunderbird for Android since it only displays General Settings.

Thunderbird for Android does receive emails so it seems to know the passwords to the servers.

I have the newest versions of Windows 10 and Android.

Any help on how to import or set the primary password in Thunderbird for Android would be greatly appreciated.

Hi there Thunderbird Community,

I am first time user of Thunderbird, and I am using version 140.2.0esr (64-bit).

I have been trying to connect my Gmail account, and it keeps on giving me this error that I have seen on other threads: "Unable to log in at server. Probably wrong configuration, username or password."

From the other threads, I tried to do the troubleshooting suggested:

 - cleared the cookies associated with Google
 - added https://account.google.com as an Exception for Cookies and to always allow
 - disabled Account Hub since it seems to have issues from what I read on another thread
 - changed my Google account password
 - tried another Gmail account with no success
 - tried various Thunderbird versions, uninstalling the old one before reinstalling the new one:  Thunderbird Release (Recommended), Thunderbird Extended Support Release (current version being used), and Thunderbird Beta.  I have not tried Thunderbird Daily.

I have added Google OAuth screen-by-screen images of what I saw before getting the Thunderbird client error message.

Any ideas?

Thanks! James