All Products Support Forum

I use Thunderbird mail-client to acces my outlook.dk - account. It has run perfect for a period, but suddenly I cannot send e-mails !!

The error-txt is (translated from my danish version): Sending the message failed. The message could not be sent because the connection to the SMTP server smtp.office365.com timed out. Try again.

I expected that that a password should be entered before sending - but no ..... - only a long waiting periode and then the error-txt

Server-settings in Thunderbird are: IMAP-server: outlook.office365.com, IMAP port 993, IMAP-crypt.: TLS SMPT-server: smtp.office365.com, SMTP port 587, SMTP-crypt. STARTTLS, Auth: General password

This has troubled me for some time - help needed, thanks.

Hello. I have my own self hosted mail server and I would like to use OIDC/Oauth2 authentification anbd take benefit of MFA/WebAuthN. I am interested in using OAuth connection with Thunderbird

Right now the definition of clientId, scopes, endpoints are hardcoded here: https://github.com/mozilla/releases-comm-central/blob/master/mailnews/base/src/OAuth2Providers.jsm

Do you have any tip to add our own server definition without needing to recompile Thunderbird ?

I saw previously it seems to be possible to append definition via this hack; https://thunderbird.topicbox.com/groups/addons/Tc85dff9ce12063c6-Mca4319b1e41dfa4b426e22fc/extension-to-add-custom-oauth-provider but now ChromeUtils.import() exports only EXPORTED_SYMBOLS which contains only getters functions

Another manner could be to improve https://github.com/mozilla/releases-comm-central/blob/master/mailnews/base/src/OAuth2Providers.jsm and add function where a plugin could append new definition Do you have any suggestion, better idea ?

Kind Regards, Edouard

Since October 18, 2023, emails using Thunderbird will not 'Send.' My nephew, who is very good at technology since that's his job, did change my Inbox to 'imap' from 'pop' as that's the direction my server, Spectrum (aka Charter) has gone, so I'm receiving messages. I"ve called Spectrum twice, but they haven't been able to help me, as their people aren't well versed in third-party servers. The 'Send' is still a problem, which he thinks is something going on between Thunderbird and Spectrum's server. Please advise. Thank you.

Some email listings do not open the correct email text. However, this doesn't apply to all the emails. Sometimes it opens the next or previous email in the list. Other times it can be off by several listings. Also whatever it opens is not a normal listing but has a lot of url links. I haven't seen this before...

My email accounts were moved to a new server, and the outgoing and incoming settings changed along with my passwords.

I have entered all the information several different times after rechecking, and I still get the same error message that says Thunderbird failed to find the settings for my email account.

I setup the email accounts in Mail with no problem using the very same server information and password

Since I installed version 115.0.1 messages with the same subject line or Re: to the same subject line are being stacked on top of one another with only an arrow telling me there is something hidden there. This causes me to miss messages for hours or perhaps days. Is there any way to stop this?

Thanks, Clyde

In previous versions of TB there was an option to select a different folder under "Server Setting > When I delete a message > Move it to this folder". The only option I currently see is to choose a folder but only for the same email account. Windows 10 - TB ver 115.5.1 (64-bit)

Is Mozilla aware that after update 102.15.0 Thunderbird no longer receives emails from optonline.net and when you go back to ver 102.14.0 you lose all your saved emails prior to 7/2/2023 which I guess is the date of the update. Can you fix this issue with 102.15.0 ? If not can you tell how i can restore my emails that were stored on ver 102.14.0 prior to 7/2/2023?

I'm having the exact same problem as what was originally mentioned in this post from 4 years ago.

The "chosen solution" was to exit firefox through the hamburger menu, which I find to be absolutely ridiculous. You mean to tell me that even though I close EVERY OTHER APPLICATION either using the "X" close button or a custom keybinding that I've set for my own personal convenience, firefox requires me to exit through a menu every time in order to make it behave the way I've told it to? No. Absolutely not. If I tell firefox that I don't want it to save my last session, that means I DON'T WANT IT TO SAVE MY LAST SESSION. If I've deselected the "open previous windows and tabs" option in the settings, then under no circumstances should it be trying to open my previous windows and tabs.

I've tried the suggestion to change the value of browser.sessionstore.max_resumed_crashes from 1 to 0. The problem persists, I assume because firefox considers being closed using the close button to be a "crash", which is interesting.

I the other suggestion further down in the thread was to set browser.sessionstore.resume_from_crash from true to false, which will prevent firefox from recovering a session from a crash. This is hardly an appropriate solution. I want firefox to resume my last session if there is a legitimate (key word LEGITIMATE) crash, because my session was closed against my will due to something that went wrong. Being able to recover my last session in such a situation is nice. I do not, however, want firefox to resume my last session when I explicitly closed the last session myself, which would be the difference between a crash recovery and restoring a previous session. If no crash occurred, I don't need a crash recovery, and aside from a crash, I don't want my previous session to be restored.

Are there any solutions to this at all? Because this is one of the biggest reasons why I stopped using firefox. I want to come back to firefox because everything else that's worth using is either dog shit, or Chromium-based (i.e. also dog shit). However, I find this broken feature to be somewhat of a security issue. If a bad actor somehow gains access to my system, I don't want him to be able to open firefox and have access to my last browser session because I closed firefox using a keyboard shortcut instead of closing it through a goddamned menu.

I am using the latest version of Firefox on Linux Mint. I've had some flash on opening issues that I've been unable to permanently prevent. Suddenly my adblock software is not working. I tried uninstalling, reinstalling, different adblocks-no improvement. No extension software is showing on my toolbar and selecting the extensions software just brings up a suggested extensions.

I don't remember with which version of Firefox for Linux this issue started; but I cannot play multiple videos at once. If I open two tabs with video sources one of the videos will automatically pause if I start watching the second one.

I have tried disabling my add-ons but the issue persists and I don't think there should be any reason for any of them interfering with videos.

Currently running Firefox 120.0 (64-bit - Arch Linux)

My Android Firefox consums 53% of the battery. See Screenshot. It was not in use. Standard browser is Firefox klar. There are no addons installed. The app was removed and newly installed several times. How can I fix the problem?

Website fonts are often garbled. See attached screenshot. I've tried the other suggestions mentioned here but nothing changes; it's still happening. I'm on a 2020 iMac with a 3.3 GHz 6-Core Intel Core i5 processor with Mac OS 14.1.1 and Firefox 120.0 (64-bit).

Help?