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I downloaded Thunderbird on my new Windows 11 laptop and began setup by entering my full name and email address ([redacted]@utexas.edu, operated by Gmail). The next screen asks for my "email account password." I entered my Google password that allows me to access my email at Gmail (https://mail.google.com/mail/u/0/#inbox). But "Authentication failed," and I am stuck! I cannot finish installing Thunderbird. I have used Thunderbird for many years on my prior laptop (Windows 10).

Hello. i have latest beta 156.b3 64bit, after updating to beta 3 my tb offer retry passwords to many google acccounts and opening FireFox for again login in to each account. I have turned off checking mails on the start up for them and turn off checking mails, but again and again opening firefox for signing in. i closing firefox but TB not continue checking mail from another mailboxes, they stopped and seems like waiting for signing. i try to manually click for each mailbox "get message", but this no work, could you help me turn off login through firefox?

I have an outlook account that will not install. I get the challenge, to send me an authentication number at another email address, and that says okay, you can close this window and continue, but then at 'continue' in Thunderbird I get an authentication error.

-I have added the email on another computer in Thunderbird and send/receive email, no error -I have added the email in the New Outlook email app and send/receive email, no error -I have added a different outlook account in Thunderbird on this computer, no error -I can log into the Microsoft live email app and send/receive email, no error -I have uninstalled Thunderbird as admin, removed the Thunderbird folders in %appdata% and %localappdata% for both the admin and user accounts, cleared the cache and cookies on the computer and in Thunderbird (including the token), then reinstalled Thunderbird under the admin account, logged into Thunderbird as the user and added the problem Outlook account; same issue. Press Continue and authentication error, even though the challenge screen says everything is connected and okay. Then I install the other Outlook account without any issues.

I am convinced that somewhere on this machine there is something that knows and hates this one email account. It is possibly because the profile file had a problem and I deleted the xulstore.json file per instructions to resolve the problem, but the file is there and the profile is working again for the other Outlook accounts, just not this one particular account.

Any Obi-wan or other wise counsel out there?

Build 20260910221217

For the past 3-4 days, I am unable to successfully add my Yahoo New Mail account to Thunderbird.

The app says it cannot authenticate my account, but Yahoo confirms Thunderbird's access.

I'm using Thunderbird Version 155.0.1 (64-bit). I reinstalled it after cleaning the installation of Windows 11 25H2 a few days ago.

Please help. I need to move all my Gmail messages to Yahoo, and Thunderbird is the only option I have.

Thank you in advance!

all other apps etc EXCEPT focus. with everything I try to ope eg mail etc, the useless program takes me continuous loops to log in. I go through the verification system multiple times and then it doesnt accept fingerprints and locks me out. this program is unusable and useless so I'm going to remove it.

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

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

My office has moved our emails onto a microsoft exchange server. I backed up my emails, removed all accounts, settings, passwords and then rebooted. Found instructions online. Went to add account > New mail. The account hub page after selecting "new mail" asks me for my name and email. after I input that, it then allows me to continue. It says "account settings found automatically" and offers me 3 options - IMAP, Exchange or Exchange (with owl add on). I select Exchange. In the left hand box next to the options, It shows all the email details and then at the end "authorisation by normal password". I try to click "edit configuration" but nothing happens, so I select "continue". The page now asks for a password. I input the password the IT shop guy gave us and then press continue but get an error message at the top - "unable to log in at server. probably wrong configuration, username or password". The only inputs available to me are the password line and the "back" or "continue" buttons. No trigger of my web browser occurs in order to input any Authorisation on microsoft via my Authenticator app.

What can I do (besides using OWL - I don't have the spare funds for yearly subscription)?

Thanks

Thunderbird ver 115.18.0, on a Win7 machine, upgrading not an option

When opening Thunderbird I get a sign-in message, inserting my email address and clicking the next button I get the google error message.

Out of the blue Google started blocking one of my Gmail accounts on Linux Mint. It's been running fine for months. The rest run fine. It kept giving me this error message.

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.

I installed that account on my windows box with exactly the same information. I cut and pasted it in fact. It went right through with no problems.

It's one of my main accounts and it's dead in the water. I deleted it and tried to reinstall it and I have exactly the same problem. Setup information. Hit continue. "Configuration found" Click done. Goes to "Sign in to continue to Mozilla Thunder bird Email" Put in email address. Click next and I get that error message. Help?

Captain Quack.

Having established a new Outlook account I cannot sign into it properly with Thunderbird - I get authentication failures each time despite all settings apparently being correct, IMAP enabled in the web browser view of the outlook account and so on. Oauth2 set and all server settings good. I have been over and over things. Tried various suggestions of the web to no avail.

I have tried unsuccessfully with three separate machines - two Microsoft 11 laptops and an iMac. All fail.

I can access the account and send/receive emails from a web browser and I have got it working okay with an iPhone, an Android tablet and a Microsoft email client - but not with Thunderbird. I even get a browser popup on the iMac when I open Thunderbird asking if I am trying to sign in - I say yes and it says I am all signed in - but the email doesn't authenticate. I have passcodes all set up etc.

A separate Hotmail account does work with the same Thunderbird client and has the same server settings (apart from the username obviously).

I am at a loss how to resolve this other than move to a different email application.

Any ideas?

Hello,

After moving my Thunderbird profile to a new computer none of my accounts can authenticate. I followed the instructions here: Move Thunderbird data to a new computer, using "An alternative method for manual transfer between Windows 10 and Windows 11 computers." What explains the response in the attached image, "Something went wrong," and how can I fix it? Happens when I click "Next", the first step to log it.

I have a related problem with other accounts set up in the profile. This one is using Oauth2. I tried switching to password, and hand a similar problem. I tested the connection to the server in Settings for the account and it was successful. Same for the others. They all authenticate successfully on my old computer.

Thanks...

Since the launch of Thunderbird (Android), I have been using it. Recently I changed the email account password and now want to update it in Thunderbird. I can’t find an option in the app to update the password, and the app is not prompting me to enter the new password.

I have been getting this message when I try to log in to my Thunderbird mail for over a week: "accounts.google.com needs you to confirm access again to keep syncing with your account. Username: soprisue2@gmail.com."

I am afraid the message is Spam, so I hesitate to click on it, but if I delete it or X it out, it goes to another screen that doesn't let me click on anything. Eventually I get a message that Thunderbird is not responding, and I close it.  I am basically locked out of my mail access through Thunderbird.  Please help me.

I cannot access the Thunderbird app menu to find out what version of Thunderbird I am using, so I guessed.