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I have a problem with my primary email. I cannot send out or receive. I'm working with my provider but no resolution as of yet. They did check my settings at the provider level but said everything looks good. I've thoroughly checked and rechecked all my email settings and am unable to see a problem. I'm thinking that since I am not signed into my browser (Mozilla Firefox) with it telling me my account is disconnected that I need to Sync my account, but I cannot do that.

So, I have been trying to Sync my Mozilla account but being I have a problem with email I am unable to receive your email code to completely sign into my Mozilla account. What I am wanting to do is to sign into my account and add a secondary email address so to receive your sign in code so that I am able to finish syncing my account.

I am lost to know what to do from here! You will be unable to reply to me using my regular primary email address because as I say, I cannot send or receive, so how can you even help me? Please help me somehow! I'm sure you have my phone number being I would think it's on my account. Can you phone me? Hopefully! Not sure whether I should put a phone number or the added secondary email address in here so you can add it for me. I can't sign into Mozilla to do anything. I went through my Google account to get this far so to hopefully send this to you. Your help would surely be appreciated! I'm desperate- here it is - Email hidden for privacy - you can contact me through that. Please help!!! Thank you!

No changes been made to my Mozilla account unless Mozilla banned me for constructive criticism yesterday. Earlier today Oct 4, 24 booted up laptop no issues. 3 hours later from cold start issue.

My version of FF 131.0 updated yesterday indicates I'm not signed in. Repeated sign-in attempts successful only to be disconnected seconds later. No issues logging into Mozilla Monitor to see progress and navigate around without disconnection. On Android 11 cell phone no issues, on Asus tablet Android 7.0 no issues. What am I doing wrong or missing? See attached screen shots and browser data.

Thank you in advance for your assistance.

My live.com accounts are no longer syncing as of 10/01/24. I tried changing the authenication method to 0auth2 as suggested and restarted my computer. Now instead of getting the notice that my password for my live accounts in incorrect, I get a message from thunderbird saying "The IMAP server imap-mail.outlook.com does not support the selected authentication method. How can I fix this? I tried changing my passwords to these 2 accounts and reentereing into thunderbird but to no avail.

I am running version 128.1.1esr (64-bit) on Windows 11.

A few weeks ago one of my email accounts stopped working so after attempts to find and fix the problem I resorted to deleting and recreating the account in Thunderbird.

The account is a hotmail.co.uk account and the server type is "POP Mail Server".

I noticed that there were fewer folders under the account (Inbox, Drafts, Sent and Trash). There may also have been a Junk folder. I thought that perhaps Thunderbird would create any additional folders as and when messages appeared in them, but I have now discovered that I have messages in the Spam folder on the server but they do not appear in Thunderbird.

Please can someone tell me what I have done wrong and how can I fix it.

Many thanks.

I have Thunderbird installed [via Flatpak](https://flathub.org/apps/org.mozilla.Thunderbird) and suddenly it's not recognizing the profile that contains the email accounts. When launching it is showing the welcome wizard instead.

The file system contains quite a few profiles though:

``` $ cd ~/.var/app/org.mozilla.Thunderbird/cache/thunderbird $ du -h --max-depth=1 6.8M ./i58nuv2e.default-release-1 813M ./r77u2ylw.default 6.7M ./w92uxxz8.default-release 0 ./jncleef4.default 6.5M ./fbs6wcvl.default-release 0 ./lz1kt9ot.default 6.9M ./tv1kaebo.default-release 0 ./7f6s4la8.default 839M . ```

but `about:profiles` shows only `tv1kaebo.default-release` and `7f6s4la8.default`.

I'm pretty sure that I didn't do anything but updating the Flatpak and I definitely didn't change any Thunderbird settings or anything in its data directories.

The correct profile is `r77u2ylw.default` (its directory size is 813M while the others are less than 7M).

Hence I'd like to know how can I make Thunderbird use that profile and avoid that issue happening again?

• • PS:** And what's the best way of cleaning up profiles, since I only need one profile anyway? The Thunderbird UI doesn't even recognise all of them, so would be deleting them sufficient?

I have successfully set up one of my email accounts in Thunderbird, so I know the software works as installed. However when I tried to set up my gmail account, and I get to the sign in with Google popup, I get an error saying that the request cannot be performed because it is "malformed". See attached images.

I have a folder with the sbd extension copied to a pendrive.

I placed it in the location: C:\Users\............\AppData\Roaming\Thunderbird\Profiles\..........\Mail\Local Folders. However, when I opened Thunderbird, it did not add itself to the local folders

Do I need to force synchronization in some way?

PF

Hello, I have a problem with subfolders. I created a few on my account, but they are not visible. When I go to the email application on my phone (samsung email), they are visible. please help me with this problem

I have been trying to connect. I just verified that I followed the directions in:

https://support.mozilla.org/en-US/kb/microsoft-oauth-authentication-and-thunderbird-202

I am getting a message I do not see being referenced here. TB is telling me:

"The current command did not succeed. The mail server for account ray@ganymede.org responded: User is authenticated but not connected."

Authenticated but not connected? What the heck?

I have talked to godaddy support several times. They keep saying "You will have to contact the email provider." But they are the email provider. So, any suggestions?

My account is ray@ganymede.org, I am trying to connect to outlook.office365.com and I have the security and authentication all, I believe, set correctly.

Erg. :--(

Hi everyone, great to see the latest release of Thunderbird.

There was mention of an "experimental mode" that enables exchange active sync.

How/where can I access this since the previous plug-ins such as TBSync no longer work with the latest version.

Thanks.

Jeffrey

Problem: newly added account disappears when TB is closed. Thunderbird on this PC (Dell Latitude 6540) has held a Verizon account for years. The "new" account is a different, equally old Verizon account kept on TB in an identical PC I no longer use. When added to TB on the present PC it tests and works fine until TB is closed. Repeated numerous times. Having read thread # 1286437 I did what follows , to no avail: 1. tried TB in troubleshoot mode; 2. tried in Windows safe mode; 3. cleared startup cache; 4. drastically pruned old emails; 5. looked up profile folder under troubleshooting info. Folder qxxxxxxd ( size 1.18 GB before adding new account) holds one folder tree, one directory tree, but NO prefs.js file. Instead, twenty-two prefs-xx.js files from 1 to 22; removed all to a thumb drive except prefs-1.js which I dared not rename as prefs.js; 6. found two profile folders, both labeled default. One is the above holding 1.18 GB, the other holds 685 MB (probably harmless and related to an old university account no longer extant). I copied both profile folders to a thumb drive. Note: profile folder qxxxxxxd is clearly engaged in what I am attempting. When TB is open with the added new account working -- which is the case as I am writing --, profile folder size increases from 1.18 to 1.20 GB and the number of folders increases by one (under "Mail" the list of pop.verizon-xx.net sub-folders increases from 17 to 18). Please advise on what to do next; I am 86 and no software geek, but can follow instructions... Thanks --Paul

Problem:

You remove an account like Google from Thunderbird, but Thunderbird continues to repeatedly show a pop-up to log into that account (in my case Google). I've noticed it even freezes the Thunderbird UI on startup.

Note: I'm self-answering this question. Mozilla Support has similar questions, but they're archived with incomplete answers. By archiving them, Mozilla is preventing the community from improving the solutions on those problems.

This exact question has been asked at least 4 different times, and it's been archived with 4 different solutions. All of them are valid advice.

• "Check your calendars" - https://support.mozilla.org/mk/questions/1441082
• "Check your addons" - https://support.mozilla.org/en-US/questions/1208183
• "Check your addressbook" - https://support.mozilla.org/en-US/questions/1440106
• "Check troubleshooting info" - https://support.mozilla.org/en-US/questions/1398233

Earlier I logged in to Firefox to pose a question. Checking email, I had a notice from Mozilla that my account was used to sign in: Firefox on Windows 10 / United States (estimated) / Thursday, Oct 23, 2025.

Does Firefox think I'm using Win 10??? I checked my computer and it verifies that I am running Win 11 with all updates.

Call me confused. Or is this a non-issue? I ask because I'm trying to get into a member website and after I login, it takes me to a page that is for new signers ... not an existing member. Has happened several times.

Thanks,

Ron

I have been trying to change an account to use a different login and server for retrieving mail. But, it keeps logging into the old server.

In Account Settings, for that account, the Server Name: is set to the new server and the User Name: is set to the login on the new server.

I have restarted Thunderbird multiple times.

Any help is appreciated.

I have a new computer and I want to transfer everything in Thunderbird on my old computer to my new one. I did an export, transferred the zip file to the new computer and imported it. All my email accounts showed up which was great. However when I go to my calendar none of the events are shown. Both computers are running Linux. Aren't calendar events exported too?