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Tôi không thể đăng nhập các tài khoản hotmail trên thunderbird, mặc dù những tài khoản đó có thể đăng nhập trêm trang web https://outlook.live.com/ bình thường, ai đó giúp tôi xử lí sự cố đăng nhập này với

Hello, I hope I choose the right category.

I'm getting these "Authentication Failed" popups every time I start Thunderbird. BTW - simply ignoring them, they go way and everything works just fine. It's just annoying.

I tried the settings as mentioned in various posts: - account settings > server settings > SSL/TLS and below OAuth2 - account settings > edit outgoing server > same as above

I restarted Thunderbird after the changes.

But I noticed that I couldn't send emails anymore (stuck "sending" window) So, I changed Outgoing back to STARTTLS and OAuth2. Email works fine again but popups are back.

Strangely, at home I have settings SSL/TLS and OAuth2 in both, server settings and outgoing (as suggested in posts) ... and everything works normally ... and no popups ...!

Any suggestions ... please

Thanks

Hello, When I open Thunderbird, I get redirect on the browser to sign in into my Yahoo account. I enter my logins and a pop-up window opens and says that there is no application able to open whatever it wants to open. I already checked the forums concerning the Oauth2 login security for Yahoo, and tried several of the advices, but I always get stuck at the same stage. My operating system is Ubuntu 24.04.4 LTS Thunderbird version 153.0 Am I missing an application? Or is something wrong with my settings? Thanks for any support.

I have a ton of email accounts in Thunderbird on Mac. I recently added a new account, and it constantly pops up the Authentication Required - Mozilla Thunderbird window. Below that it says: https://OURURL is requesting your username and password. The username and password are both stored in the passwords, and I don't get the password needed message, and can email and receive in between the annoying pop up.

I have this same issue on a new computer we just set up with other email addresses too, so I think it has to do with some automatic setting when adding a new account that happened in the most recent release. I do not get the authentication message for any of my older accounts.

I tried all the things I could find online - deleted and re-added account, deleted the password files in the profile folder, reset the startup cache, etc. I searched the support base, and can't find anything

We host our own email through cPanel. All the server settings are correct, or we wouldn't be able to use the email address at all.

Hi, I use gmail and yahoo as my onlline emails. Gmail is primary and Yahoo is secondary. I'm frequently prompted to login to Yahoo. (via pop up) New to me. I reimaged my laptop recently. Did I forget something either w/in TB or Windows? I;ve relooked at all my szettinngs. Nothibng seems amiss. Thanks for your help!

Hello,

I'm having an authentication issue with Thunderbird on Fedora when trying to add a second Microsoft account.

My main @outlook.com account works without any problems using IMAP/SMTP and OAuth2. However, I can't get my @outlook.fr account to work.

For the @outlook.fr account, I'm using:

IMAP: outlook.office365.com, port 993, SSL/TLS, OAuth2 SMTP: smtp.office365.com, port 587, STARTTLS, OAuth2

When I add the account, the Microsoft login page opens normally. I sign in with the @outlook.fr account, complete 2FA, and Microsoft confirms that the account has been successfully connected to Thunderbird.

However, as soon as I return to Thunderbird, I get an authentication error saying that it was unable to log in to outlook.office365.com with that username.

I've already tried clearing Thunderbird's saved passwords, cookies, and web cache. I also confirmed that IMAP is enabled in Outlook web settings, checked the account aliases/sign-in preferences, and verified the server names and ports.

Since the Microsoft authentication itself completes successfully, I'm not sure why Thunderbird fails immediately afterwards. The same setup works with my @outlook.com account, so the problem seems to be specific to the second account.

Has anyone encountered this before, or is there anything else I should check?

Thanks.

突然「pop.mail.yahoo.co.jp サーバーのユーザー パスワードを入力してください」と出たので記録してあるパスワードを入力したのですが「サーバーにログインできません」と出ます。パスワードをリセットして新しいパスワードを再度入力しましたが、やはりログインできません。 現在Thunderbirdでyahoo mailとgmailを使用していますが、gmailは問題無く送受信できています。

Hello,

We need help with Mozilla Thunderbird and OAuth2 access to Google Workspace accounts. This worked for years and recently started failing.

Setup — two SEPARATE Google Workspace organizations, in the same Thunderbird profile:

Workspace A — egkt.hu (separately administered) → does NOT block Thunderbird. Works fine on a clean machine where it is the only account. Workspace B — egyensulyintezet.hu (a different organization, different admin) → blocks Thunderbird with admin_policy_enforced.

Already tested / ruled out (NOT a client, machine or network issue): - A personal @gmail.com account (no Workspace policy) sends perfectly from the same Thunderbird. - egkt.hu works standalone on a clean macOS machine. - No antivirus/TLS interception (Defender scan clean, hosts file default, certificate valid), no proxy (system + Thunderbird), TCP to smtp.gmail.com:465 succeeds, fails on both office network and mobile hotspot, ports 465 and 587.

Our questions: For Workspace B (egyensulyintezet.hu): please confirm this is the API controls → App access control policy blocking third-party apps, and advise how to mark the Thunderbird OAuth client ID (above) as Trusted so users can use Thunderbird. Is it expected that a blocked account from one Workspace can interfere with the OAuth login of an account from a separate Workspace in the same Thunderbird profile? If so, how do we prevent that?

Thank you, Sebastian

Hallo Forum,

ich habe 2 Mail Adressen bei gmx.de. Bei einer von beiden kann ich mich seit ein paar tagen nicht mehr anmelden. Ich bekomme den Hinweis: Passwort falsch. Ich verwende bei beiden Mail Adressen das gleiche Passwort. Ich kann mich über den Browser bei GMX bei beiden Adressen anmelden, aber nicht im Thunderbird, den ich seit Jahren benutze. Auch die beiden Mailadressen rufe ich schon immer über Thunderbird ab. Ich kann mir keinen Grund für dieses Problem erklären. Hoffentlich kann das jemend von Euch.

Grüße Dieter

I was having trouble with Thunderbird outgoing mail. I changed some settings and it still didn't work. I tried to log in to Thunderbird and now cannot log in at all. I have 25 years worth of email in this account!

Mozilla Account works normally directly inside Firefox, but logging into Mozilla Accounts through Thunderbird's Add-ons manager fails during the Firefox handoff.

Steps to reproduce: 1. In Thunderbird Add-ons, click Log in. 2. Thunderbird redirects to Firefox, showing "Continue with Mozilla account". 3. Click Continue -> Firefox displays "You could not be logged in. Please try again."

Troubleshooting already tried:

• Created a brand-new Thunderbird profile (thunderbird -P) — same failure occurs.
• Cleared cookies/site data in Thunderbird and cleared Firefox cache.
• Disconnected existing Thunderbird/Add-ons connections from Mozilla Account dashboard.
• Extensions and add-ons themselves install and download normally.

Repeated attempts to log in using the window presented continue to fail. My password is correct and I am able to log in on the spectrum website without problems. I have two email accounts in TB ; one with Outlook.com and the other with Charter.net. The Outlook account logs in without problem but the charter account continues to give me the message that the login failed (image attached). When I go too the account server settings in TB for charter and do a test connection under security settings, a connection is made without a problem (image attached).

I believe the previous version (156.0) was working but there seems to be a rapid succession of changes coming down the pike lately. I have had intermittent problems of this nature in the past 4 or 5 months so it's difficult to keep track of which versions are successful.

Help please. I am not thrilled with spectrum but I do not want to change my email address.

I managed to add one email account, but now is impossible to connect any other, it doesn't matter if it's a gmail or a personalised email.

It says: Authentication error.

Unable to log in at server. Probably wrong configuration, username or password

both give me the same error.

Any advice?

Hello forum,

I have 2 mail addresses at gmx.de. I can’t sign up for either of them for a few days. I get the note: password wrong. I use the same password for both email addresses. I can sign in to both addresses via the browser at GMX, but not in the Thunderbird that I have been using for years. I have always called the two e-mail addresses via Thunderbird. I can't explain a reason for this problem. I hope that's from any of you.

Greetings Dieter