Thunderbird Community Forum

Twice in the last fortnight Thunderbird has lost all email passwords - the Tools/Settings/Privacy and security/Saved passwords just leads to a blank box where the passwords usually are. Thunderbird will no longer collect email and keeps asking for passwords for email accounts. This happens even when the option to 'save password' has been selected. I think this is probably happening at the point when the PC is rebooted. Thunderbird version 153.1.1esr (64 bit) and Windows 10. Using System Restore has not resulted in recovery of passwords. Several different email accounts/email providers are involved - outlook.com, tiscali.co.uk and zohomail.eu. Broadband provider is Zen.

I notice that the Appdata/Roaming/Thunderbird/Profiles/w2anb37y.default folder contains a number of files named with such names as 'logins.json-8.CORRUPT' - with 'Date Modified' being mostly either 17th August or today 31st August - so it might look as though password data is becoming corrupted.

Can you assist?

James

mozillla or thunderbird is changing an email password blocking my access to send email from account it will not accept the password i set for account, in saved passwords it has a huge password stored that i did not set ,,also that password is not accepted it was hard enough to get that email set up on a w10 pc and a w11 laptop, this problem started when i allowed an update to t-bird, further updates have not helped on update 115.10.1, it want to update again, i have use mozilla and t-bird for 30+ yrs and the problems keep getting worse not better and has become almost user unfriendly. to add an email, should require 1)user name,, 2) email address, 3)password. thats it , it shouldnt require a IT degree to set up the rest

hi, snap thunderbird 155.0-1 ubuntu 24.04 keeps asking for passwords of all email accounts after upgrading thunderbird. all passwords are correct and they were not changed. the issue started today after thunderbird was upgraded to 155.0-1. this new version seems to have touched on oauth: https://www.thunderbird.net/en-US/thunderbird/155.0/releasenotes/

What’s New

- S/MIME popup shows signature, digest, encryption algorithms and key sizes

- Default address book for manually added contacts configurable with mail.addr_book.add_item_default_uri

- Enterprise policy DisableQRExport can disable QR export

- OAuth add-ons can override built-in settings for selected domains and hostnames

- Manual account config streamlined with Exchange, Graph, and custom OAuth support

- Custom OAuth support for IMAP and SMTP servers

- PKCE and external browser fields added to custom OAuth settings

- Enterprise policy DisableExperimentalFeatures for disabling experimental features

any idea how to fix this? thanks

I have 8 email accounts. Four of them use my service provider; "@Bell.net", and four of them are gmail accounts. When I open my Thunderbird app two things happen. A Google web page opens asking "Mozilla Thunderbird Email wants access to your Google Account". with a reference to one of my gmail addresses. This web page opens when I shut down Thunderbird as well. Secondly, Thunderbird asks me for the passwords for each of my four Bell accounts. I have tried everything suggested, deleting passwords, deleting profile files, you name it. I've been at this on 4 separate occasions, with this last one lasting 2+ hours. I'm at a complete loss. When I suggest deleting Thunderbird and reloading it, I'm told that may not fix the problem because it would still reference potentially corrupted files. Please help!

I have 8 TB emails. Every morning when I open email, all passwords need to be re-entered, sometimes 2-3 times a day. I have done everything YouTube has suggested and looked for similar issues and fixes on the forum, including creating an initial PW to open the main TB email account. No success yet! I have a PC; if that helps answer the question. I also recently downloaded an update, which did not fix it. Any suggestions would be appreciated. Thanks in advance! Carl

I have 10 email accounts I have to monitor. When I set up Thunderbird on Windows, I entered all the account info and the passwords. I checked the box 'use password manager'. This worked well for a few days. After several days, I started the app again and it asked for every password again. I entered all the passwords again. This happened several more times. I sought help for the bug, but found none. Someone suggested deleting password database files in the Thunderbird data folders. This did not help. Someone else suggested that CCleaner may be deleting password data files, so I added the entire Thunderbird data folder to the scanner exclusion list. Yes, this may be a security risk, but I need this app to work, as I have not found any other app that even begins to get the job done. Ready to start looking for another email app now, unless someone can fix this problem. It is not reasonable to expect me to lookup and restore 10 passwords every time I check my mail.

After moving the data file to a new windows 11 machine, the Password Vault no longer remembers passwords. How do I fix? Online searches have told me to delete several files in the Profile folder. I have done this several times w/o success. What are my options other than to find another email client? Thanks, Hank

I've been using Thunderbird on our pc for decades, but it I believe the last software update has corrupted the "Password Manager". Since then, almost every time I attempt to log in, I receive the message about my password is incorrect, even though I have changed and checked the box that states something like "use Password Manager" for it. This is naturally "driving me crazy". Is there going to be a fix or is it just my problem? Thank you!

I attempted to get into an account and my password did not appear. When I attempted to get into my password manager, it has disappeared completely and I have no access to that information

Witam. Mam problem z hasłem. Za każdym razem kiedy wysyłam email thunderbird żąda wpisania hasła informując, że takie nie zostało odnalezione. Po wpisaniu wiadomość zostaje wysłana ale przy następnym wysyłaniu historia się powtarza. W menadżerze jest zapisane hasło, ale thunderbird nie odczytuje go. Nie pomogły żadne usuwania i restarty. Proszę o pomoc.

Ever since last 2 windows updates, thunderbird always asks for passwords and authorization for google calendar...this happens when you restart the computer and when you log out of thunderbird and log back in....this never happened before I uninstalled thunderbird and reinstalled it and it keeps happening is there a fix?

Seit ein paar Monaten verlangt Thunderbird nach jedem Update die erneute Eingabe der Passwörter für die Verbindung zum emailprovider und zum google Kalender. Das ist extrem nervig und war in all den Jahren davor nicht erforderlich. Warum ist das so bzw. wie kann ich die Neueingabe nach jedem Update vermeiden?

I needed to change my AOL password and when I went to change it in Thunderbird I accidentally deleted the entire entry instead of just the password. Now I don't see a mechanism to reenter that information. I thought it might ask that if I simply tried to reconnect to the AOL mail, but I get the attached when I try even though that is the information I use to sign into AOL

Thoughts?

Thanks, John

bonjour à vous utilisateur de thunderbird depuis des années, il fonctionne très bien (j'ai la dernière version : Version 153.0.2esr | Publiée le 4 août 2026

- par contre, il me demande les mots de passe à chaque connexion depuis deux jours - j'ai supprimer le fichier key4 mais lorsque je relance rien ne change ; il demande les mots de passe de tous les comptes.

Auriez vous une solution ? merci beaucoup

Please excuse the length of this but it's necessary.

Began using Thunderbird (TB) in June, 2026 accessing email from wowway using POP3 (I know not imap, but old habits die hard). Changed password on wow in July and changed it in TB. Thereafter, and up until yesterday, TB was unable to logon to wow. However, the new PW allowed access to emails by browser logon to wow; old PW failed as it should. Frustrated with not being able to use TB with new PW: - deleted AppData/Roaming/Thunderbird folder (profiles and all) - recovered a backed up copy of TB folder from mid June when things were working and copied it to AppData/Roaming. Bingo, was able to get and send emails. Puzzled, looked at TB Saved Passwords and verified the old PW was being used. To verify this, I sent an email to myself, pressed F5 to get mail and it was in the inbox, and also on wow server.. BOTTOM LINE: There is no question that TB is using an old, changed wow PW. And if PW in TB is changed to new PW, access to wow fails. How can this be? Help please.

Hello For the past few days, every time I launch Thunderbird, I’m asked to re-enter my account password. I do this every time after deleting the saved passwords in the settings, ticking the ‘Use the password manager...’ box, and restarting Thunderbird. But nothing seems to work. Do you have a solution? Thank you. Kind regards.

I have been using Thunderbird for several years to read and send my Comcast.net email. As of 5/23/26 Thunderbird is no longer showing my new emails. However, when I login directly to my Comcast.net email account their are plenty of new emails.

I thought that perhaps Thunderbird is using the wrong password to try to get my comcast.net email. So I examined my password by going to Menu > Settings > Privacy & Security > Saved Passwords , which opens the "saved logins" window. Then I pressed "show passwords." I found that instead of showing my usual comcast.net password, it showed something that is bogus and several hundred characters long. I right clicked on the bogus password, selected "edit password" and entered my usual correct password. The "saved logins" window then showed the correct password. Finally I closed the "saved logins" window.

Then I opened the "saved logins" window again and confirmed that the password was still correct.

Then I exited Thunderbird and restarted it. Usually, when I start Thunderbird it simply opens my inbox window and shows me my new emails. But now a separate browser window opened from xfinity (comcast) showing my email account name and asking me to sign in. I pressed the "Let's Go" button and is prompted me for my password to the comcast.net account, which I entered. This password was entered in a browser window with URL "https://login.xfinity.com/login" so it seems legitimate. The browser window then disappeared and I assumed Thunderbird would now show my emails.

Sadly, Thunderbird did not show updated emails. So I went back to Menu > Settings > Privacy & Security > Saved Passwords and checked the password. For some reason is had changed to another, different, bogus and several hundred characters long.

I have attached a screen shot of the "Saved Logins" window showing the bogus password and another screenshot of the entire bogus passwords before and after I entered the correct password.

I have been pleased with Thunderbird for a long time, but this has me worried.

Can you give advice?

Tom Moriarty

I'm trying to resolve password issues. I fear that I might lose access in T-bird as I have through my browser.

T-Bird presently works to receive e-mail at two addresses: [redacted]@pacbell.net and at [redacted]@pacbell.net. It won't let me send email from [redacted]@pacbell.net.

None of my "they did work in the past" passwords allow me to log in with yahoo or AT&T

I want to use the same p- words with t-bird and yahoo and AT&T

Recently it's a daily occurrence that I must enter the password for my SMTP server. I always check "Use Password Manager to remember this password" but it doesn't help. The next day I'll have to go through this again.

I power on my machine multiple times each day, and I use Thunderbird each time. It doesn't happen each time. It seems to happen only the first time I use Thunderbird each day. This is new behavior. Before it would happen now and then, now it's daily.

I don't have a Primary Password. No need for it.

If you need to see the message I can send it to you, but I'm not attaching it right now because it shows my email address and the smtp destination. Maybe I'm being too careful.