Thunderbird Community Forum

How can I get rid of that horrible bug of Thunderbird prompting me for my login credentials. Already tried the following: re-adding my Email account, reinstalling Thunderbird from scratch. Nothing has worked.

I set up thunderbird exactly the same as on my old computer -- i cannot retrieve my emails on the new computer even though the test connection was successful - but i get a pop-up saying autentication failed when i try to get my emails on my new computer, Old computer still gets them

2026 09 07

Mozilla Support.

Dear Sir,

I have operated my email

redacted@malcolmgmiller.biz

for many years.

I have forgotten my password and been unable to receive or send emails for some time. I do not know how to access the change your password page without knowing my password.

I do have my customer number but that did not grant me access.

Please assist me in reestablishing my account.

Yours faithfully,

Malcolm G. Miller.

redacted@malcolmgmiller.biz (Not operational) redacted@aol.uk (Standby email account)

I keep getting "authentication error" when adding a new email account with Infomaniak, even when I use the app generated password. I am not having this problem with Outlook. I cannot disable Account Hub (1 suggested solution) in Thunderbird 157. what to do?

Since updating to TB 153esr from the previous esr, I occasionally get a server authentication error with imap.gmail.com. Most often they happen when first starting up, but occasionally seem to happen at other times. They seem to be transient as gmail works fine otherwise.

Just wondering if this is a known bug?

I have been having all my email transferred from Yahoo mail for more than a decade, it used to be Frontier net, and i didnt want to change my email, and i havent, so i transfered it on 3 devices because i am very used to the thunderbird format. It still works on my android phone and my HP laptop, but thunderbird will not allow me to sign in to yahoo mail on my PC which is what we use the most for our email, for some reason yahoo made some changes and required a new sign in so i did that on the other 2 devices, however, when the sign in box from yahoo pops up on our PC it always says " OOPS something went wrong" and i called yahoo and they verified it was not them. Which leaves Thunderbird to fix the problem. Please address this as i still Do Not want to change my email address or the Thunderbird Mail which we are used to. Some things are okay just as they are, so i would like some help from your end. Thank you, Richard Sessums.

I have went under passwords and I have edited the password I have changed it three times I have edited it three times I am about ready to pull my hair out what is the secret to getting these new passwords to work. Please help me. PLEASE. Thank you ever so much. I just keep getting a window that pops up that keeps telling me to enter my password I enter it and hit okay then the next window opens and it says enter new password this is driving me nuts help me please. please answer to [redacted email from public community support forum] because my other email don't work

My email account is handled by a university that uses Office 365-based Microsoft system for email accounts. My institution now requires that email client programs us MS Graph for authentication. Does Thunderbird 156.0.1 have this capability?

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 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).

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!

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

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...