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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

Okay, I am trying to set up Thunderbird for my wife's service club's email (gmail account). It just will NOT recognize the password during the account setup. Everything goes along fine until the available configurations come up and I hit "Done" (same for either configuration + trying to use the "manual" function).

Pop up window opens that says "enter credentials" in the header, but page is blank. Alternately, if I exit setup but stay in program and then use the "new account" option, no pop up, but same as with popup, I get "Checking password" for an extended time and then error message about user name or password. I have verified we have the correct password by logging into gmail directly using it.

I am totally stumped here. The laptop is a Dell Inspiron 15 5000 running Win11 and Tbird version is140.4.0esr (64 bit)

hi today thunderbird started showing yahoo popup login and after adding credentials i always get "something went wrong.We could not sign you in. Try again from a different device." Also popup once closed it opens instantly.

i can sign in normally from browser. thunderbird version is 147

is there any fix about this?

thanks for any help

regards

Hello,

Just the other day I noticed my Thunderbird doesn't log into my Yahoo account and as a result doesn't update the mailbox.

I get a pop up that asks for Yahoo mail address and then password. When I put the correct info there, all I get is "Something went wrong" message.

I've tried removing cookies, removing saved passwords, removing the account and restarting the PC. None of these helped.

I've also checked the IMAP and SMTP server addresses and ports are ok and it uses the SSL/TLS and OAuth2 for authentication.

Any idea what to try?

Moin zusammen, ich bin seit vielen Jahren Kunde bei Osnatel und Thunderbird. Seit dem 14.9.'25 kann ich bei Thunderbird keine mails mehr empfangen und versenden und ich weiß nicht, warum. Ich bekomme von Thunderbird dann immer folgende Meldungen: "Anmeldung auf dem Server imap.osnanet.de fehlgeschlagen" mit den darunterstehenden Optionen "Nochmals versuchen", "Neues Passwort eingeben" (was nach Versuch auch nicht funktionierte) und "Abbrechen". Wenn ich eine mail versenden möchte, kommt folgende Meldung von Thunderbird: "Senden der Nachricht fehlgeschlagen. Der Postausgangsserver (SMTP) kann nicht authentifiziert werden. Bitte überprüfen Sie das Passwort und die gewählte 'Authentifizierungsmethode' unter 'Konteneinstellungen Postausgangsserver'." Da bin ich gewesen und check leider nicht, was ich da machen bzw. verändern muss.

Besten Dank für Ihre Hilfe!!

Christa Nöst, Osnabrück cnoest@osnanet.de

Hi Thunderbird,

Windows would not let me keep any apps when I upgraded to Windows 11 so I am having to set up Thunderbird again. But I also had to sign into my Yahoo account again - and had to change the password. Now Thunderbird can find my address (<redacted>@yahoo.com) but it cannot verify the password.

I had an email I had to send today so had to download Outlook - against all my principles! Please, please, find a way I can get back to Thunderbird and expunge Outlook! I donate every month and have done for years. . .

Best wishes, Kitty

When I open my Thunderbird account it asks me to enter my password for my Outgoing server. I have never changed my PW and it won't accept it so I am blocked from my account and there is no way that I can find to edit this password. I need help.

I just installed Thunderbird and wanted to use it for my old gmail and my current icloud emails, however, while the gmail one logs in fine, each time I try to log in with my icloud email with the correct password it says "Unable to log in at server. Probably wrong configuration username or password.". Am I doing something wrong?

I cannot seem to sign in or submit my password. I usually get around 15 emails of a Sunday morning from my family in another state. I cannot seem to receive emails and thus not be able to reply. Please may I have some assistance. I am in my late seventies and very self taught. Of course as a result when anything goes wrong, I am not sure how to get through this.

I have four accounts in Thunderbird. One of them has been inactive for a long time, but I keep it for old messages. I disabled automatic account checking in the configuration and everything was fine. I recently updated my system to Fedora 41 and now have the newer Thunderbird 140.3.0esr. The problem is that now, immediately after startup and then about every 15 minutes, a Google API login window pops up, as shown in the picture. How can I effectively block this?

I'm not able to log into yahoo e-mail via Linux Firefox (145.0 (64-Bit)): The error message is "We were unable to log you in. Please try again from another device." I can log in with Chrome (Linux and Windows) and Firefox (Windows). My issue is to switch from POP3 to IMAP in Thunderbird. There the same error message occurs.

While trying to retrieve new messages for one of my email accounts, I keep getting the message "Login to server xxx.xxx.xxx with username xxx@xxx.xxx failed."

I click the "Enter New Password" button and enter the same password that I use to successfully login to the account on a browser, and it STILL fails and keeps showing the same message box.

This started happening this morning. Have others reported this problem? What do I need to check to see if there is a problem in either Thunderbird or in my email account settings?

Thanks for your help!

Hi. From 27 feb I can't login to yahoo mail through mozilla thunderbird.

When I start thunderbird, new windows is opened with this link

https://login.yahoo.com/account/challenge/fail?src=oauth&client_id=dj0yJmk9WVZUaWRNUUZSQTBNJmQ9WVdrOVNqbHJUMGhtTkU4bWNHbzlNQT09JnM9Y29uc3VtZXJzZWNyZXQmc3Y9MCZ4PTgz&redirect_uri=https%3A%2F%2F127.0.0.1&done=https%3A%2F%2Fapi.login.yahoo.com%2Foauth2%2Fauthorize%3F.scrumb%3D0%26client_id%3Ddj0yJmk9WVZUaWRNUUZSQTBNJmQ9WVdrOVNqbHJUMGhtTkU4bWNHbzlNQT09JnM9Y29uc3VtZXJzZWNyZXQmc3Y9MCZ4PTgz%26code_challenge%3Dt6iqw87GVPZ649cCvOEh2L1hwkUluBhsrwxCdVTXAOY%26code_challenge_method%3DS256%26redirect_uri%3Dhttps%253A%252F%252F127.0.0.1%26response_type%3Dcode%26scope%3Dmail-w%2520ycal-w%2520sdct-w&acrumb=0EYriz7Z&display=login&authMechanism=primary&e=true&pcn=password&eid=3692

When I tried to login I see this information:

An error occurred.

We couldn't log you in. Please try again from a different device.

This is very strange, because I tried it on another PC and this is the same. It looks that yahoo even didn't try to check password, because this is not matter if I wrote correct password or different - I see the same information.

Please help. I have two yahoo mail account and this is the same.

Both accounts works well on another e-mail client and I can access to my account without any problem by browser. This is only thunderbird problem.

My Thunderbird email program ran into problems getting mail from Google. So I deleted the program and then installed it again, now it cannot log in to any email address I have. How do I rectify this? I can access the mail directly thru Google but I prefer you email program.

when I view the saved passwords, the saved logins window does not work properly. I cannot drag the borders left or right to view whole information such as passwords or provider. The borders just refuse to move. I therefore can only view partial information under any heading. Please help if possible. Thank you.

In a moment of stupidity while updating Thunderbird to the new one, I clicked the wrong button. Everything looked OK and after checking it, I let my IOBit Uninstaller get rid of excess files. It got rid of all of them. I may still be able to get them back, however in the setup your existing email, it won't log in. It finds the configuration, income and outgoing and username. But then comes back with the ERROR Unable to log in at server. Probably wrong configuration, user name or password. I only have one account and it is also loaded on my laptop. However, that doesn't help me much as I hadn't used the laptop for months until this happened. Why won't it log in? Looks the same as the laptop in settings. My restore points don't work. It has not been my day.

So, how do I get it to log in? I really need that email back. Thanks Tori (who will back and save on a stick forever now)

Dear Thunderbird support team, I am for a few days unable to log into my account, because the program doesn´t recognize the password I set for the imap.wolrdserver.net. It shows the message in attachment. I changed the password for my account and the imap.worldserver.net with my email provider, however it did not work.

Do you have another idea how to fix this? Thank you in advance. Kind regards Elora Helmke