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Today is the first day using your latest update of Thunderbird (128.2.3esr (64-bit)) and I have been experiencing problems. In certain conditions when I am either editing a new email or receiving email, an email in my Drafts folder is Sent without my clicking SEND. No record of the sending exists in the SENT folder but the intended recipient has received it. In a second problem, the Correspondent in a mailbox has been edited to that ALL the email in the mailbox shows that Correspondent being the sender. I claim you have bugs in this release.

Tbird still displays No message found, does not allow user control, then starts "Not responding." In can only hit the top right, red X, and close the program. The same happens when I start in Troubleshoot mode. I'm running Windows 11 with the latest updates. Is something wrong with my profile?? What can I try next?

After updating firefox (to version 113.0.2 (64-bit)), I discovered that the add-on "Privacy Badger" I was using was off. I tried to get anew the add-on but received the above message.

Any help would be very welcome.

The Firefox stable desktop taskbar shortcut issue unresolved for many months. Every time clicking on the Firefox taskbar/start shortcut is non responsive or it gives the error class not registered. Firefox nighly/developer do not have this issue. Fujitsu laptop, Widows 11 lates upgrades. Please fix.

After 30 years of using Thunderbird with no problems, yesterday opened my account (with my wife's email also) and everything was gone. I managed to get my stuff back but today I worked on my wife's and, while I got her email address to appear in my account I can't get anything else - folders, emails, saved emails, etc. Obviously mine was hidden somewhere because I recovered it pretty readily but I'm having no luck with my wife's. The only things of hers that appear are her inbox, trash, and outbox. I'm delaying telling her because she will be justifiably extremely upset. HELP!

Hi team,

I tried switching over to the monthly release branch however none of my addons work.

Is there some major incompatibility introduced (aka WebExtensions)? I can not find any documentation anywhere as to what changed or why an extension would not work with 129+.

Also the release notes do not mention that 136 changes the Profile format, requiring a redownload of all messages from the server and therefore reindexing. This took several hours, only to find the addons don't work. Downgrading Thunderbird gives a profile error, and requires the `--allow-downgrade`switch to restore functionality. There should be a warning in the release notes regarding the one-way nature of the upgrade.

Thanks!

Recently clicked to update to the next version of Firefox. Then I get the message "Restart to Update Firefox." I restart Firefox but the message is still there when I click Help > About Firefox. It would appear that the update did not happen for some reason. Do I need to re-install Firefox to get around this problem?

I update my browser often but still seem to get tons of update alerts. Do you update that often? I wonder if these alerts are a scam so when i get them I go to the Mozilla site and download the latest version. Why don't you just have an "update" button or something is it really necessary to download the whole thing every, what seems like, week?

Help: Unable to copy my email lists when using export function to migrate profile to new computer.

It is March 17, 2025. I am using Thunderbird 128.8.0ESR (64bit) on Windows 11 Home (version 24H2) on BOTH COMPUTERS! When I use the Thunderbird Tools Export function from my old Window 11 computer to my new Windows 11 computer it copies all my email and folders correctly. I can send and receive email fine on the new computer. However, it fails to copy over my Thunderbird address book and my email lists (the address book and lists are blank). I tried multiple times. My profile is 76GB large. So I tried navigating to C:/Users/Profiles/app data/thunderbird/roaming/profiles/profile name to perform the move manually. Still no luck.

About 2 years ago. Thunderbird versions had the ability to export address books separately. That option is no longer available. So if you know of a way to export my lists of addresses (each lists is a thousand email addresses) That would also solve the problem. -Eileen