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I've been using Thunderbird for years and have never had this problem. Since the upgrade today, after I run Thunderbird once and close it I can no longer start it up again. I have to reboot or use Task Manager to kill it in order to run it. This is on Windows 11. Please help - not an acceptable workaround for long. Optionally, how do I downgrade to previous version? I should know better than allow automatic upgrades.

Adding a couple images below, when it has started successfully it shows as one of the Apps in Task Manager. When I close it, Thunderbird drops into the Background Processes but doesn't end. I have to kill it here in order to start it again.

I am using Firefox on Mac - I usually minimize instead of closing - It has started making a TAPPING NOISE I thought it was my computer - but It now has happened to 3 different computers and one is brand new - T T T T TTT , I have narrowed it down to Firefox, when I minimize it will do it, then opened and it stopped and min. then start, repeeat - now it does the TTTTT all the time with it open or minimized. What is going on?

I have windows 11 and the firefox 124.0.2 browser. I cannot update to the latest version of Firefox. I receive an error message "failed to update". I've uninstalled and reinstalled the browser, ran the install utility selecting update, nothing seems to work. Please help

'Vanishing Menu BarBar' Mac OS system is set to NEVER hide menu Bar, yet both Thunderbird and Firefox hide the menu bar, they are the only applications I have that do this. the posted solutions DO NOT EXIST in Mac OS 14.4.1. The posted solution says to customize and then go to a menubar drop down, but in both apps there is NO such menu item. There is a menu item for the tool bar, which I have ON, but not for the menubar. So what gives?

I am hoping someone can help me. I had an email address for years that was a Medicacom email. When we got rid of Mediacom we no longer have that email. I had it linked to Mozilla Thunderbird. Yesterday I tried to disable it. I clicked on remove account but not on the message data. It removed all of the emails that I had in there. I have several things that I need that were just gone. I hope someone can help me retreive them. Thank you.

Since a recent UPDATE, there are NO emails showing in the SENT BOX, or any of the FOLDERS including an important one labeled TAX RECEIPTS!!! The only boxes which show emails are the INBOX and the DRAFT BOX. After depending on Thunderbird for 20 years, I now have to use WEBMAIL. OH DEAR, Can you please help me. I am a nearly 80 year old grandmother who wants to email her grandchildren in GERMANY. PLEASE HELP!!

I have several email accounts; and they are all set up the same way on Firefox, and I have checked that that is so. But on one of the email accounts the "sent" file is missing. I have checked the "place copy in Sent..." In the subscription list "sent" does not show up for this account

Do you need more info ?

What can I do / check ?

Thanks, Dieter

My Thunderbird stopped receiving emails. I am on a Mac. I am posting here because I looked through the list here. Others had the same problem but the conversation is now archived. I tried the offered solutions and they didn't work. So having just fixed mine, I'm posting my solution. Go to System Settings. to Passwords. Unlock Passwords by signing in. There you find your email service listed. Click on it and check that that password matches the password on your account on your email services website. If it doesn't, fix it. Then open Thunderbird on the menu bar at the top, go to Settings ( not Account Settings.) Go to Passwords, to Saved Passwords, click on that and it will show you a list of your saved logins. Below the list, you can click on Show Passwords to see what's there. I had a bad password in there. (I had more than one password that had been saved for Thunderbird.) I deleted all Thunderbird passwords. Then I closed and reopened Thunderbird, clicked Get Messages, filled in the correct password when asked. Bingo. My email downloaded into Thunderbird.

After last update, Missing "TRASH" folder and only have Junk Folder that everything is put in and marked as "Junk". Then those messages are all marked as "junk" automatically that may not be Junk. Tried to create subfolder named "Trash" and will not allow. Windows 10, 64 bit Dell laptop I-5 Inspiron 5759.

I have had a few emails that did not show up in the inbox listing, so the message count at the top indicated more messages than were listed. Doing a search showed them, and by moving them from the search results to another folder, and then re-searching and moving them back, caused most of them to appear. But not all - I still have a message count of 20, but only 19 listed, see photo 1. Photo 2 shows the hidden email (from Barry Chandler). So the email is there, it's just not visible!

I'm currently using Thunderbird version 115.9.0. For the last several months when I detach, delete or save an attachment, Thunderbird will duplicate the email. I then manually delete the duplicate.

This didn't happen the first several years I used Thunderbird. Is there some setting I missed? Any solution to prevent this from happening?

Thanks for any advice.

All of a sudden two of my aol accounts won't sign in. I get a browser screen that looks like an aol sign in window and says to enter my aol log in credentials, but the URL is something else. Clearly bogus stuff, and surely attempts at phishing credentials. One other aol account still seems to log in just fine.

My customer has a problem since about a month on Firefox (using it on a Terminal Server). The top of Firefox gets hidden by white and grey "bar" and he can not even use the "functions" of buttons behind that. -> Please see attached Print screens Lower part of the Favorites-bar is visible and also works if he clicks on it - everything above not visible and does not work for clicking.

The problem only comes up from time to time maybe once or twice a week. When he minimizes Firefox the application behind is visible normally. when he maximizes it again, same problem still visible in Firefox. When he closes RDP Session and reconnects - the problem disappears. When he turns off the monitor where Firefox is visible - Firefox gets move over to the other monitor and the problem disappears.

I am not 100% sure if this is a Firefox problem or Remote Desktop Problem (or maybe an add-in problem). But until now it only happened on Firefox!

He is always on the last recent version of Firefox, we just updated today to the latest version again - but I can not say yet, if the problem would still exist on the latest version from today.

Hello. I use youtube website as music player quite often (without premium) and play my favorite list of songs. Meantime, when Google started meddling with youtube due to their new offer as youtube premium I met two most annoying issues like "are You still watching" dialog and the behaviour where youtube just cleared "repeat list" function without my consent. Both issues was resolved with java scriplets I took from community.

Now I run into third issue but not sure how to diagnose it. If Firefox is in the background, or tab with youtube has no focus the playlists stops from time to time. The moment it stops is when next video should start playing. When browsing on different tab, I can see on Youtube tab that title of the video has changed (to the next video) and even the song started (for 1-2 seconds) then video pauses and word "playing" disappears from tab (normally there should be title on tab and "playing" word under title). It is not "are You still watching" dialog issue because if I move mouse cursor on youtube tab (even without setting focus on it) the player will continue - till next song.

The issue doesn't appear if youtube tab is active. I can't use developer tools in firefox because can't debugging website when tab of the site is not active (at least I don't know how). I tried to find solution with community but with no success. I allowed youtube to play video and sound always without exception in firefox preferences but it is not the solution.

Any tips?

I have installed TBSync for my addresses/contacts. Syncing works correctly between Thunderbird and iCloud (both ways). However, new entries created in Thunderbird (although correctly syncing with iCloud on the net) do not appear in the Mac Contacts app on the Mac desktop. Strangely, these entries appear on my iPad Contacts app. It is only entries created in Thunderbird that do not sync through to the desktop Contacts app. Yet I can create a new entry in my desktop app and it syncs through to Thunderbird correctly. I can also edit any entry on Thunderbird created on an Apple device and the changes go through to all my devices. It seems that the format used when creating a new entry in Thunderbird is creating a problem in the syncing process between my iCloud account and the desktop app. Any ideas?

I accepted this the other day but now don't want it. It is a Print popup & at bottom says Grow I can not find how to remove this. Popup shows this: Unlock the Print Button!

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What WordPress email setting we should use to to send WordPress transactional emails via Gmail account which has Thunderbird-Gmail App enabled. For example, using FluentSMPT WordPress Plugin?

Or, how to send WordPress transactional emails using Thunderbird mail client, on Linux OS server?