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After moving my Thunderbird profile to a new computer none of my accounts can authenticate

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 comput… (read more)

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...

Solved 3 80

I have lost access to my icloud email on Thunderbird.

When I try to access my email on Thunderbird, I keep getting the same message: Login to account "jayoung3@icloud.com" failed Login to server imap.mail.me.com with usernam… (read more)

When I try to access my email on Thunderbird, I keep getting the same message: Login to account "jayoung3@icloud.com" failed Login to server imap.mail.me.com with username jayoung3 failed.

I changed my password but I still can't access my email. And I have an account recovery code (which I don't know how to use).

Solved 1 109

cannot set password for outgoing email

I have filled in an un-correct password a number of times due to incorrect language setting of my keyboard. Then the popup window for this disappeared, and I cannot find … (read more)

I have filled in an un-correct password a number of times due to incorrect language setting of my keyboard. Then the popup window for this disappeared, and I cannot find a place to enter password. What can I do? It is the password for outgoing email.

Solved 6 59

Firefox set a passkey on my PayPal business account didn't give me the PIN

Hi! I didn't set up a passkey on PayPal Business and the best that PayPal can figure, it was done by Firefox. I don't have the PIN for this passkey and I can't set-up ano… (read more)

Hi! I didn't set up a passkey on PayPal Business and the best that PayPal can figure, it was done by Firefox. I don't have the PIN for this passkey and I can't set-up another passkey because my account "already has a passkey". I can't change the passkey PIN because I don't know the PIN. I'd like to know:

  • Why would Firefox set up a passkey on PayPal business for me? ( I think that should be my decision, thank you very much.)
  • Given that one was "set-up" for me; where is the passkey hidden? Any clues on that?
  • Is there anyway to get Firefox to undo the passkey (or tell me the PIN) that I didn't request so I don't have to switch to Edge just to go to PayPal Business. It's ridiculous!
  • Has this happened to anyone else or has anyone heard of this.

The work around that PayPal recommended is that I go to PayPal from another browser. I always use Firefox and sort of resent having to switch browsers for this reason just for this account. From Microsoft Edge and I can go to my PayPal business account and just sign in with my password and there is no request for a passkey PIN. I'm not setting up a passkey at this point, which would only be wrong if I use Firefox to log on. So I'll stick with switching to Edge for the time being! Maybe someone can give me a clue.

PS: I tried to get a screenshot of the pop-up related to this issue that says "requested by Firefox" but I wasn't allowed to get a screenshot from there.

Solved 1 70

I cannot remember my email password.

In setting up a new PC (laptop), I must make my password known to the software. But I cannot remember my password. On my existing, older, laptop, I saved my email passwor… (read more)

In setting up a new PC (laptop), I must make my password known to the software. But I cannot remember my password. On my existing, older, laptop, I saved my email password long ago i.e. I do not have to enter my password, on the older laptop in order to get email. I no longer remember my own password. How do I find my password on my existing, older, laptop ? Thank You. <[edited from public forum] @attglobal.net>

Solved 3 1 50

I need to change the password Mozilla uses to access my Earthlink account.

I received an email message from earthlink which included a verification code that I did not request. Earthlink support told me to change my password immediately which I… (read more)

I received an email message from earthlink which included a verification code that I did not request. Earthlink support told me to change my password immediately which I did. Now when I open open Mozilla on me laptop, it requires me to put in the new password. How do I change the password/login that Mozilla uses to access earthlink?

Solved 5 50

can't add my new GMX account to Thunderbird

good day, i'm trying to add a new GMX email account to thunderbird, but i keep getting an error telling me that the user name and or password are incorrect, but they are… (read more)

good day, i'm trying to add a new GMX email account to thunderbird, but i keep getting an error telling me that the user name and or password are incorrect, but they are not. i already have two (2 ) other GMX email accounts on thunderbird and they are working just fine. i had a similar issue last week with my Hotmail/Outlook account telling me it couldn't connect for the same reason, but that seemed to work itself out and that one is working fine. i've been using thunderbird for quite a while now and never had any issues integrating GMX email accounts. thank you for your time...Mike S

Solved 3 70

Thunderbird will not like with Gmail acct after Google password change

I'm running Thunderbird most recent version. After changing my Google password, I can no longer connect through Thunderbird to Gmail. I've tried uninstalling Thunderbird … (read more)

I'm running Thunderbird most recent version. After changing my Google password, I can no longer connect through Thunderbird to Gmail. I've tried uninstalling Thunderbird and reinstalling. I've tried deleting the Gmail acct info from Thunderbird and setting it up again. I get the pick IMAP screen, enter my new Google password, then get a Google 400 error stating "The server cannot process the request because it is malformed. It should not be retried."

Any ieas?

Solved 2 30

I installed thunderbird 150 and get always an authentication error, when adding a new account

I double checked all data (IMAP and SMTP ports, passwords, mail adress, ... And I tried it on 2 brandnew computers (one PC; one laptop), running on Windows 11 I've no ide… (read more)

I double checked all data (IMAP and SMTP ports, passwords, mail adress, ... And I tried it on 2 brandnew computers (one PC; one laptop), running on Windows 11 I've no idea, what else I could do

Solved 3 90

Thunderbird denies access to Google account

I can't access to my personal Google account from Thunderbird. Thunderbird configuration is OK. Cookies authorised. e-mail account connection process goes this way: - I e… (read more)

I can't access to my personal Google account from Thunderbird.

Thunderbird configuration is OK. Cookies authorised.

e-mail account connection process goes this way: - I enter name and e-mail address - I confirm standard configuration found in Thunderbird's FAI database. - Google asks me to confirm that I authorise Thunderbird to share mail, contacts and agenda informations (I was asked my Google pwd only the first time I tried the process). - I confirm my consent - Back to Thunderbirds account configuration window, with "authentication error".

Similar failure when I try to only connect to the contact list or to my calendars (which is my initial will), also from a scholar Google account.

No change after update from 149 .0.2 to 150.0

Solved 1 109

Password update

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 o… (read more)

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.

Solved 2 70

obscure logins.corrupt

Hi a few weeks ago i had the problem that my firefox-stored-passwords are gone and there are files named logins.json.corrupt and logins.json-1.corrupt to -4 The in dir… (read more)

Hi a few weeks ago i had the problem that my firefox-stored-passwords are gone and there are files named logins.json.corrupt and logins.json-1.corrupt to -4 The in dir backup was also corrupt. File length 122 -123 kb all nulls. If i look at the dates first to last, they span two weeks were i didnt notice the problem. PC is always hibernated after work. Except for one which i imported just before from edge at the end of the two week span No problem: logins replaced by external backup as i found here at the forum.

But: How can Firefox produce multiple corrupt files without noticing me? (I have saved them for reference) In that two weeks span logins using firefox passwords obviously worked. (I dont remember the details)

Then some updates and reboots. No problem. But after work i do always hibernation

TODAY: PC didnt survive hibernation. logins and in-dir backup are corrupt again.

What about a) checking better if something is going wrong (obiously you do something because you rename the files for some reason) b) Noticing the user c) And how on earth this can go wrong in the first place.

Now for the obscure: Both times somebody has just before posted something against the greatest President of all time at Fux Nus using this pc. Backdoor possible?

Thanks

Edit: Using Windows, no other problems with storage on the 1TB Samsung ssd

Locked Archived 3 279

Primary Password is a pain

ted36 Apr 27, 2026, 10:42 CST To open Thunderbird I must enter a primary password. This is driving me NUTS. When I open the program, I want it to start without having to … (read more)

ted36

Apr 27, 2026, 10:42 CST

To open Thunderbird I must enter a primary password. This is driving me NUTS. When I open the program, I want it to start without having to remember a password. Also, if something happened to me, nobody else in my family could open the program without knowing the password and how to find it if needed. After many decades of using this program for email, this primary password nonsense has become a great annoyance. FIX THIS STUPID PASSWORD PROBLEM. Please.

Solved 5 40

Problem logging in to Thunderbird, interference from Google

13 Nov. I have been dealing with the problem of the requirement to sign in to Thunderbird using Google. It does not work. I enter my e-mail address, click next, and get… (read more)

13 Nov. I have been dealing with the problem of the requirement to sign in to Thunderbird using Google. It does not work. I enter my e-mail address, click next, and get a second window that says "Error 400". I tried to get some help with this through a company listed on the internet as Just Answer. That turned out to be a scam.

Someone called me this morning, offering to help me with this problem. The person was from the company The Web Services. While the technician from Web Services was working on my computer for a while to restore my Thunderbird files, he told he that they kept losing the internet connection to my computer. He said they had determined that they kept losing the internet connection, because some hackers were hacking into my computer, while they were working. He showed me a lot of evidence of hacking on my computer, indicating that the 2 technicians from Just Answer who had helped me the day before through long chats were hacking into my computer the entire time they were chatting with me, going through steps they said would solve the problem with having to sign in to Thunderbird using Google. I think the people from Just Answer had tried to create a Thunderbird back-up profile, but had not done it correctly. As a result, all the data within Thunderbird was lost. I cancelled my subscription with Just Answer today.

The technician from The Web Services was able to restore my Thunderbird, including the many local files I have. Some additional formatting of the site still needs to be done, and the correct server settings need to be set up. That is to be finished tomorrow morning. The Web Services person also sold me an anti-hacking firewall, which is supposed to also provide network security.

I am concerned, because on the Mozilla support page, it specifically states that Thunderbird does not offer phone support. I gave this company access to my computer today, so they could restore my Thunderbird files. The Thunderbird files have been restored. Now I see that the issue with trying unsuccessfully to sign in to Thunderbird using Google is still there. So I am right back where I started over a week ago, trying to find someone who can solve the issues that come up when I try to sign into Thunderbird with Google.

I am somewhat suspicious of the company The Web Services, because they called me and offered to fix the problems I am having with signing in to Thunderbird. Please let me know whether it was unwise to let them work on my computer today. Could this be another scam? Thank you.

Solved Archived 6 80

Cannot sign into Microsoft org account that requires 2FA

I can log in and fill in the password, but upon trying to log in, at the end it says "Authentication error. Unable to log in at server. Probably wrong configuration, user… (read more)

I can log in and fill in the password, but upon trying to log in, at the end it says "Authentication error. Unable to log in at server. Probably wrong configuration, username or password" I believe this is because the org I'm in requires 2FA for all logins and I can't actually 2FA the login. Thunderbird automatically closes the window that I would use to log into the account and authenticate the connection a few seconds after it appears

Solved 3 70

Login to Server imap.comcast.net with Username Failed

I have the latest Thunderbird update. Since yesterday, using imap.comcast.net, I have been getting the error "Login to server imap.comcast.net with username [removed] fai… (read more)

I have the latest Thunderbird update. Since yesterday, using imap.comcast.net, I have been getting the error "Login to server imap.comcast.net with username [removed] failed." It wants me to retry or enter a new password. I cannot get emails. I can, however, log into my Comcast email account online and see emails delivered. Thunderbird, of course, will not receive these emails.

For imap.comcast.net, port is 993, connection security is SSL/TLS, and authentication method is normal password. I have not changed any of these settings. I have not changed my password. I have done nothing to cause the problem.

I cannot find a solution online. Could someone help? Thank you!

Solved 5 1 60

Trouble Syncing from phone with desktop getting OAuth 2.0 error

I have installed Thunderbird on my Samsung phone and synced it with the desktop. All three of my gmail accounts came up okay, but when I go into them I do not get the in… (read more)

I have installed Thunderbird on my Samsung phone and synced it with the desktop. All three of my gmail accounts came up okay, but when I go into them I do not get the inbox, only outbox. When I click on each account to try to sign in I get an error that says "OAuth 2.0 is currently not supported with the provider". How can I sign in to my gmail accounts on my phone in Thunderbird?1

Solved 2 70

K-9 Mail suddenly stopped to work.

My K-9 in Android suddenly stopped to work a couple of days ago. The server asks for autentification. I haven't changed anything. I've uninstalled and reistalled the app… (read more)

My K-9 in Android suddenly stopped to work a couple of days ago. The server asks for autentification. I haven't changed anything. I've uninstalled and reistalled the app and restarted my phone a Samsung S22 ultra several times. The app is recognating some settings automatically but it doesn't accept my old password with 16 letters in a group of four with highfens in between. What shall I do, please? Something wrong with the server? The version of the app is 17.0 updated March 16th 2026.

Solved 2 60