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On my PC - Initial problem was T-bird took forever to load and virtually all new msgs went to TRASH and I had to move to IN-Box. Per help from David - Saved off profile, and reinstalled thunderbird from thunderbird.net. No change. Then UNINSTALLED T-Bird (profile still intact). Now just attempts to open "Looking up imap.comcast.net", but won't open/connect and to close the app I must use WIN Task Master. Can't get to any msgs, etc. Also, in the past when I was able to open, the banner or bar at the top of the page had hundreds of email icons. I sometime have over 1000 emails in my in-box!! I have years worth of emails in folders on T-Bird which I don't want to loose. Help. Thank you. I have a "working" version (with the "trash" and slow loading issue per above) on my laptop, so I can access suggestions on that version of T-Bird. You could also send any suggestions to x@gmail.com

(PII redacted by moderator)

In our organization we have moved from an on-premise mail server to M365. We've also added our new EWS-based accounts to Thunderbird. Since there are a large number of users with a significant amount of older mails they want to have access to, they have been asking how they could upload them to EWS now.

From the looks of it, using TB one can either drag and drop messages from the local folders to EWS. Would message copy/move from the local folders be faster if the EWS account was setup over IMAP, instead of over EWS? If so, we could setup another account corresponding to the same EWS identity, but over IMAP, just for the purposes of transferring messages faster.

Thanks in advance for any information provided.

I already have two Exchange email accounts using Exquilla that were created in earlier T-bird versions, they work in the latest version as well. I am trying to add a third exchange account, I enter the email and password do auto discover and get the following error; Invalid or missing password: password does not exist in the directory for this user. Trace ID: b2766d8c-6b02-4879-ab77-e30177281600 Correlation ID: 220ef2bd-c4b2-42a9-9414-d4f7bc0dae35 Timestamp: 2026-03-06 02:43:34Z

An Autodiscover site was found, but we could not find a usable entry. This is probably because your server does not support Exchange Web Services (EWS). If your server does not support EWS, then ExQuilla will not work for you. If you believe this to be in error, try manually entering the EWS URL.

I know the message is wrong since I have two accounts that function. I have gone through the manual configuration as indicated online and still have no success just says "URL test failed". I was hoping this latest version would have another way to be able to enter information to get around the failure. Any guidance is greatly appreciated.

I tried to transfer Thunderbird file from old computer to new computer but get "Profile cannot be loaded. It may be missing or inaccessable." when I start Thunderbird. The old TB file works on old computer and I am pretty sure I copied it and pasted it into the new location in place of the current Thunderbird file.

Normally, I can right click and tell Thunderbird that this is NOT junk, however, when I do this, these emails go back into the inbox and virtually instantly return to junk.

This is from anyone's email address that arrives from one particular website: @legacydigitalagency.com

I haven't come across this issue since I started using Thunderbird 20+ years ago.

I have been using Mozilla Thunderbird for decades and they have even contributed a small amount of money to Thunderbird periodically. Just within the last two or three days all of a sudden I have been unable to send emails with my phone. I receive emails, but I do not send them.

So I opened up a laptop where I did not have Thunderbird and set it up properly through Spectrum using the incoming and outgoing servers as mail.twc.com. and yes, just like on my phone. I continue to receive new emails, but even with the laptop I was unable to send an email.

I received the message"send message error sending a message failed. The message could not be sent because the connection to outgoing server smtp mail.twc.com was lost in the middle of the transaction. Try again."

I contacted Spectrum twice and both times they had me try to send a message through their Web server spectrum.net and that message did go through. Of course then their response is that this has to be a problem with the third-party app meaning Mozilla Thunderbird, and they can’t help with that at all. I sure would appreciate some help because I hate to walk away from Thunderbird as well as change my email address after all of these decades.

Возникает ошибка:

Ошибка отправления сообщения. Сообщение не может быть отправлено, так как не удалось установить соединение с Сервером исходящей почты (SMTP) «smtp.gmail.com». Сервер может быть недоступен или отказывать в соединении по SMTP. Убедитесь, что указали корректные параметры Сервера исходящей почты (SMTP) и попробуйте снова.

Since updating Firefox from a previous version, the browser no longer displays any Unicode emoji characters. Where an emoji would normally be rendered (👁️), the browser instead displays empty space. Websites such as twitter and discord, which use their own artwork for emoji, are unaffected. This has negatively affected my browsing experience.

For illustrative purposes, I will add a series of emoji and include a screenshot of how they are displayed: (😀🙁😡💀). Other characters still display correctly: (β❖♞䷲⎈𐘢𓀺இ). My computer otherwise displays emoji correctly. The issue persists after disabling extensions, and has persisted between computer restarts.

I'm running Linux (NixOS) and Firefox version 148. I've tested on Chrome based browsers and they work fine. Tested on Firefox forks and they also don't display correctly. This is new since less than a week ago.

Thanks for any help with this.

Previous solution: switch browser.newtabpage.activity-stream.improvesearch.handoffToAwesomebar to false does not work anymore.

Please help.

Regards, Victor

Thunderbird has been working OK. Now, despite PC restarts and so on I get the message "mail couldn't be sent, time out error for SMTP server. I have tried changing the SMTP settings from port 465 to port 587 but no difference. If I log in to my email provider (vodafon/uniymail) I can send mails no problem. The problem is with thunderbird not sending smtp. Tried turning firewall and antivirus off, no help. Internet connection is glassfibre, internet works OK.

So i was trying to apply in Iness Ruhengeri university but at the last step, am trying to upload my A2certificate and ID cards as PDF but it seems to be impossible. I was using chrome but now i am trying this mozilla firefox to see whether if i can complete my application.

I use the same e-mail address on my desktop and my Samsung android phone. I was told to change my desktop e-mail from POP3 to IMAP which I did and then told by the Thunderbird desktop forum to change also my phone settings from POP3 to IMAP. I was told in order to do that I needed to create a new account first and then delete the old account.

However, when I go into server settings and I put in my e-mail address from my desktop, it states "e-mail address already in use". Clearly I do not want to create a new e-mail address - just use the same e-mail address that is on my desktop so that I can access e-mails on my phone that appear on my desktop. Help please!

When attempting to access Shortcuts from Firefox iOS there are now additional steps to get to the site than before the last update. Now a user must click in the address bar which then shows the favorites the user has available. The next step is to depress on the favorite you want to access but you must hold the depressed icon to wait for options to appear. Within those options one would choose Open in new tab which then creates a popup that must be clicked reading “switch tab.” Only when these steps are followed just as laid out will a user gets to the favorite website they want. Try it yourself and then follow my directions as per my screenshots. Can’t upload all pics

Thank you, A Loyal Firefox User

bold text''''bold text' In Settings under Startup, I have check to open all my previous tabs, but when I am shutting down, Firefox wants to close all my tabs before shutting down. If Firefox closes all my tabs on shutdown, then those tabs will not be there next time I start up .... how can I keep my tabs when I shutdown and have them next time I start up

Thunderbird: Suddenly links in emails are behaving very strangely. Whenever I click on a link, the Inbox window is selected and the link is essentially ignored.

Here is an example: At this site

   do-not-reply@stackoverflow.email

when I click on "Special partition of the set $[n]$" the Inbox window comes up. Copying the link, I find it is this:

   https://sg-links.stackoverflow.email/ls/click?upn=u001.
   OPqImZUVClavrirop4vrL7ZIbR0SrdVPtNEAYlGR3VmeeoYNTs2YYZpJH3BMBXZ
   ypFqhwcCL0W4gGDFAApiH3-2BR016USOPYaLANdPKZjlW0-3DmLFi_2PDPOmwor-
   2B6V31hnv8BUMaRG7aWcOmoOP-2F643cEijic3j9TA5gCHyppxjQ9TBY4lsrML67
   biQlFPRhSQCFZ86ah0lQI9n7U5ZVkveDE2052QW-2FwO-2FJ4UcIm81qFMYmU4O9
   ShqKKGy36kM1z-2B0fnN11b-2FmCJIGaFm3B3hOcHelGa2JqxXxo-2F8aMi-2Fab
   n3xpHjNGJDJPOuqQnbUcmzFgjFJLgUlRBoqqXrtNOiG-2BPf6zckqkur9C-2F6-2
   BPScg-2FqxGd62MyveIhjj3E5eymt0AYJwns5QMh0aB7x3ffsUN3-2BKtcGiHEoT
   Isj3JEhymMdbub5Toszk1Y7XWWv8ZpJnhplevIVkQK0wcXBECWPTCeRLfomlTrRy
   Vffv1ElwvyqjmrUdrboHKtWj6uN5LLWErraNc2hr1FSAD1-2BP4p9X2YFH8frIa6
   sfYVg3S-2Fv8soK9qvkx6wfObpB1s-2BGXqPxng1zj5yYUDyibE-2B32qXO1nRXA-
   2FjIL4U2JeijYg8lA7Et8QZWT

This is over 700 characters long, which seems a bit strange.

Any info on fixing this will be greatly appreciated.

Roger House

Apparently MS has changed something in their OAuth2 and Thunderbird has yet to catch up. I've seen several other questions regarding this, but no workable solutions, just silly replies. Is TB actively working on a solution or am I now forced to install Outlook?