Thunderbird Support Forum

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.

Start new Windows session. Start Thunderbird and works OK. Shut Thunderbird down and try to re-start during same Windows session and it will not launch. Reboot Windows and try to start Thunderbird and works OK. Alternatively, going into Task Manager there will be a number of Thunderbird processes running. If I manually end them all (while Thunderbird is NOT active) then I can restart as normal too. This all began with 124.0 Beta 1. Never had the issue prior.

Also, Thunderbird crashes if restarting within the app. By this I mean clicking the X it appears to close (excepting those persistent processes running) but "Restart Thunderbird" such as to launch Troubleshooting mode or from the "Restart to update Thunderbird" config crashes the app with 100% consistency.

Ever since the last "upgrade" which is terrible I get my emails in threads. Does anyone know how to get rid of the stupid threaded messages? I've tried everything. All I want is emails to be listed in the order I received them. I DO NOT WANT THREADS

Just trying to upload my email account. It has only partially completed the upload. Files are missing and alterations I made to my actual email account are not showing. Tried taking it off and reloading but has exactly the same errors!

Windows 10 22H2, Thunderbird 115.5

Thunderbird periodically loses my saved passwords (11 accounts) necessitating the re-entry of said passwords. This has been happening for about six to eight months.

I have searched for solutions and have tried deleting the pkcs11.txt and secmod.db files but the problem reoccurs. There is no rhyme or reason as to how often this happens. If I new where the passwords were stored, I could copy the good password file back into the thunderbird directory.

Any suggestions would be greatly appreciated.

Thanks.

Even though highlighting text is a SUPER minor feature, it is one I would love to see in Thunderbird. I am using Release 115.6.1 (64-bit) and would love to have that capability. I searched for add-ons but the only one I found had been withdrawn by its author. Please advise if that capability exists and how to install it. Thanks, mkcgkc@gmail.com Ken Cawthorne

When I open Thunderbird all the emails are listed BUT they are double spaced. This is not the spacing of an email response, just the way they are displayed when TB is opened. I'm sure it is a simple mouse click selection but it eludes me. Can anyone suggest the choice? There are two computers and one of them displays exactly they way wanted. The other one show each email double spaced before opening it. The attached image is the display I want. Thanks for any help.

Larry Kamberg ldkamb@frontier.com

I have thunderbrird on both my laptop and computer, i got home, and did my normal, and on my computer it come up with Authentication Failed, its only doing it on the computer, but no the laptop, i have version 115.4.1, on both, but howcome it only doing it on the computer not the laptop? should i re-install on the computer?? or is their another way to fix this problem?

Need to set up Thunderbird to receive emails from yahoo. Cox is transitioning emails to yahoo presently have two addresses : cliven@cox.net and daciaandclive@cox.net

After updating to the most recent version of Thunderbird, I cannot send email using my address of billward@kc.rr.com. I can send email using my address of billward122@gmail.com. When I click Send, I get this message: "Send message error. Sending of the message failed. An error occurred while sending mail. The mail server responded: billward@kc.rr.com sender rejected. The email address you are sending as must match the email address you used to auth. Please check your SMTP settings. AUP#Out-1500. Please verify that your email address is correct in your account settings and try again."

All my account settings, including my email address, are the same as they have always been. The problem with not being able to send emails only started a few days ago. I suspect it is related to the latest automatic update to version 115.4.1(32 bit) or to updates just before this one.

How can I get Thunderbird to let me send emails again the address of billward@kc.rr.com? Thank you.

Hi Folks. About a year and a half ago I some how got hacked in communication with a help desk somewhere. From that point on , I have not been able to use my Thunderbird email. It asks for my password that I do not have. I have spent hours trying to reset it. I have tried a clean reinstall, but it recognizes me and asks for my password. I have my email addresses saved and would be happy to do a fresh install, but I have not been able to figure out how to do this. I am very much obliged for any help you may offer. Thanks Tom Adams , [edited] @comcast.net [removed email, phone# and location privacy info from public]

Running 115.5.0 and want to export my contact list to be able to use it in a spreadsheet. The export function in the Tools dropdown only allows for export of "accounts, messages, address books and settings to a ZIP file." What happened to the ability to export just the address book separately to a csv file? Please help. Thank you.

The ability to change font size is disabled. I lost my User profile on my PC, and I am starting from scratch with all settings. My custom folders are still there, but I have had to recreate message filter rules, and I can't get the font large enough to read.

Note: When I click on the image I provide below, it makes it look like my font size is huge. It is not.

Hi All, Greetings!!! For the past two days, I have got the error like "Sending of the message failed. The message could not not be sent because the connection to Outgoing Server (SMTP) timed out". So I have restared our router (Broadband Modem), and then tried to send the mail, but the result is same. Then I have tried using my mobile network (using hotspot method), this time mail was sent sucessfully. Please help me to solve the issues...

Thanks Karthik

Since the big update I cannot read my messages in the message window without scrolling as I read each line. The message window is so small that I can only see about four lines of text at a time. I can't get the messages to open in a new window unless I click on them and choose "open in new window" even after setting them to open in a new window on their own.

The last update fixed the font on everything from being too big in spite of settings so now I can read a little more at a time. It's still very frustrating having to scroll constantly.

Previous versions of TB did not chain or link replied messages to the original and were received as separate messages. So if I have a reply to a message it comes in in TB as a new received message. Now however it is linked to the original so there are "sub messages" linked under the original. How can I change that TB behavior back to the single message only? Replies get buried under multiple layers of linked messages which is often an issue even seeing a new one come in.

Tnx for anyone who may provide guidance. Searching the TB forums has not provided an answer.

Bruce Miller

I recently reset my desk top and after that my thunderbird will not open without a password that I have not got. I need a simple way to find the password or otherwise allow me to reinstal a new download. I have tried for two days using lots of suggestions from web and help but I cant get past the request for a password

I can't seem to be able to edit Address Book entries in TB 115.3.3.

I highlight the email to change and can't do anything with it

In fact the address book is no longer found under Tools.