All Products Support Forum

About 75% of the times I try to send an email I get the following: "Sending of the message failed. The message could not be sent because the connection to Outgoing server (SMTP) smtp.XXX.XXX was lost in the middle of the transaction. Try again." Failure is more common with attachments, and gets worse with increasing attachment size. For one message with a 600K attachment, I had to try 44 times before the message went. The problem occurs on a desktop and two laptops that use Thunderbird. Opening Thunderbird in Safe Mode did not help. My ISP cannot find a problem and believes the problem is caused by Thunderbird. I think the problem started in October 2020.

Hello, for the past week i've been tackling this problem and it's driving me nuts. I've basically replaced FF with Chrome at this point, because I can't use it for work.

Firefox refuses to print, no matter which printer I select, and even if I try to print to .pdf using Microsoft Print to PDF (or other, 3rd party ones, I tried). Other programs and browsers print just fine, it's only FF that refuses, and it refuses to do so with any printer, physical or virtual.

The error I get is a window titled "Print Preview Error" and the error message is "An error occured while printing" (see attached image). For what it's worth, when I go to the menu and select Print, I get the print preview just fine, it's only after I move on to the printer selection and click on Print that I get this error.

I've followed all the steps from: https://support.mozilla.org/en-US/kb/fix-printing-problems-firefox as well as: http://kb.mozillazine.org/Problems_printing_web_pages#Reset_printer

And I've also tried using Safe Mode while doing that, as suggested here: https://support.mozilla.org/en-US/questions/854093

I hope you can help! I've been a Mozillian for more than 20 years, contributor, and volunteer, but this is making my work impossible and I'm forced to abandon FF due to this problem.

Hi - when I create a new folder they are not imediatly displayed in the folder list. There are some older posts from 2014/15 about this but non of the sugestions work. The only option is a restart of thunderbird which is so problematic I would rather move to a new email client if this is not fixed. this is happening in both my hotmail account and my yahoo account so pop/smtp and outlook exchange protocols. Thanks Dave...

When using my computer today Firefox began not working, I would open it though clicking or running as admin, and it would open then Immediately crash, I've attempted to delete the profile files to force it to create a new one, I've attempted to use backups to see if it would fix, I've refreshed my Firefox account using another pc logged into my account in Firefox. Ive attempted to use the "firefox.exe -P" command to force the profile to open but that instantly closes like the browser, and at this point im out of ideas on what it could be. Any suggestions or solutions?

I have problems downloading podcasts (mp3 files). Downloading seems to start, but wont finish, i only get a small part of the file and then it fails. What could be causing this?

Hello!

I can't use Netflix on my old Windows 7 machine. I'm sure my computer can handle the transcode but just in case - it runs an i3-2330M with 6GB of RAM. When I hover over a title, I can see the preview but when I click it, I end up with an error message. I run the latest Firefox version and have also restarted to check if it works but alas, to no avail.

I have attached an image below. Also, just in case, I have done the adjustments to Firefox's configuration from here.

All help would be appreciated!

PS. Not sure if this helps, but Firefox couldn't play Spotify either! When I open the web Spotify player, I can see my playlists and such, but when I click on any song/album/playlists's play button, it doesn't respond at all! I have resorted to using the app, but am mentioning just in case if it helps figure out the problem/for other users having the same trouble as me.

Bonjour,

Un de mes clients m'a fourni une adresse mail professionnelle qui passe par office 365,

J'utilise Thunderbird comme logiciel de messagerie, j'ai lancé une reconnaissance automatique, et le compte se crée sans souci. Je reçois les messages, mais impossible d'en envoyer, il y a soit-disant une erreur avec le smtp sortant (IMAP).

J'ai vérifié 15 fois les serveurs et données du compte qui sont censées être les bonnes : smtp.office365.com Port : 587 Starttls/mode de passe normal

Et j'ai toujours ce message : "échec de la connexion depuis le serveur smtp.office365.com avec le nom d'utilisateur s.bai@xxx.fr" (erreur 80004005, description inconnue)

Il semblerait que le problème vienne de Thunderbird car : - pas de souci avec le logiciel de messagerie de mon téléphone portable - pas de souci avec Outlook (j'ai fait un test)

J'ai toutefois tous mes comptes mails sur Tunderbird, je souhaiterais continuer à l'utiliser,

Sauriez-vous m'aider svp ?

Merci

some mails moved from one email account to another since 4-5 hrs now they arent moving constantly getting some server error at times to no error as well restarted it in safe mode as well and still not happening i am a new user and havent enjoyed using thunderbird at all kindly help

Firefox stopped loading facebook a few weeks back and I've been using Edge for FB. Today Firefox gives "SEC_ERROR_BAD_SIGNATURE" for a large number of sites, including gmail and all the google sites, while still working for other sites like BBC News. I get the impression that Firefox is being somehow "targeted"... I've used it for years, going back to its predecessors in the 90s and have resisted changing browser so far!

When I opened Thunderbird today I noticed that there were a lot of my emails not there. I looked in the activity manager and found the document attached to this. I don't understand why TB would just out of the blue index the messages and then delete them? Also how can I get them back?

Suddenly, Firefox won't load Google Calendar. I see the template, but the items on the calendar won't load. I know it's not the calendar itself because it loads fine in Chrome and on all my android devices. I made sure all the add-ons were taken off. I refreshed. I cleared the cache. Erased history. Nothing worked.

I finally gave up, backed up all my bookmarks, and deleted Firefox. I downloaded it fresh and installed it again. Same problem! The calendar won't load. I found others complaining, but no one had a solution.

Not to be a conspiracy theorist, but a friend told me this was part of a "browser war" and Firefox would no longer support a variety of sites and apps. Is that true? Or do you have a solution.

About 25% of the time when I click on a link in YouTube or other places, or open in a new tab, the new tab appears but there is no "hourglass" to say it is processing. If I close the tab and do it again it works and there is an hourglass and then it completes. I think it started with 84.01 but got better on 84.0.2 but still happens maybe 10% of the time. Thanks

Sometime in the last week or so, the lastpass and onetab icons that normally reside just to the right of the URL display and to the left of the download icon and the history icon in the upper right of my FF browser disappeared. I think maybe it was the result of an update, but I wasn't paying close attention, then when I did notice it, couldn't find anything on the interweb about it.

They are both still installed since if I go to the onetab on the playstore it only shows uninstall and if I restart the computer, one of my open browser windows will restart with the onetab open as a new tab. If I close the tab, there is then no evidence apparent that it is still there. I have hovered my mouse over that area but nothing shows to be there.

Any ideas? BTW, if not apparent from the above, I am not very technical. Thanks

Win 10 Home, FF browser

Hello, I downloaded the customized version of Firefox for Apple silicon based Macs and noticed a problem, the magnification icon (one of the three circles on each window) is compressed to the left and cannot be clicked (nor can it be seen). I'm pretty sure the problem happens because my computer is in Hebrew (I also set Firefox to Hebrew but this problem also happens in the English language of Firefox)

Preface: Mac Hd replaced, OSX restored from Time machine backup. Prior to this every thing worked fine.

Now: 1) FF TOOLBAR bookmarks have disappeared completely, but NOT the bookmarks in the sidebar etc. 2) Despite clearing cookies, enabling them and clearing corrupt cookies - certain sites (FBook) do not load properly (they do in safari). (until corrupt cookies were cleared I couldn't even log in to Mozilla)

Tried: Returned to earlier profile, no help. All other aspects of OSX seem ok.

I have two laptops..both W10 64 bit both Firefox version 84.0.2. On works fine the other just will not complete the loading of Farmville-Two on Zynga . I have tried to go page by page and make sure the two laptops have identical settings and they do as best as I can find. By any chance does anyone have any suggestions I can try. I have done all the suggestions From Zynga..cleared cache, deleted web content, rebooted, reinstsalled their Launcher+ program so you dont need Flash and flash is disabled, I did virus and Malwarebytes scans, even did a sfc/ scannnow, I changed the Firefox settings to allow pop ups and set to privacy to standard. It starts to load but the page stops and locks up and I am left with a white window on the left where the farm should load ...the laptop to a point sometimes I have to reboot to close the window. It used to work just fine. I know my way around a bit but not an expert..just cant play on one of the laptops..frustrating. It started about a week ago. All other programs seem to work ok. Appreciate any help..Thank you.