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Hello Mozilla I have Windows 10 pro My last update of Thunderbird resulted in bad function, the former Installation worked not really fine. As I found out Windows showed me two Instances of thunderbird , the new one and an older 115.18.0 I tried to deinstall the old instance of thunderbird usind standard deinstall. This left me with some of the old thunderbird still in the sytem which I cannot deinstall. How can I get rid of these remainders to have a clean fresh installation of thunderbird?

Best Regards Wolfgang

Hallo, ich habe noch eine alte Version von Thunderbird 31.2.0 auf dem Release Kanal. Dort steht das ich die aktuelle Version habe. Kann ich einfach auf die neuste Version 136.0 runterladen und damit umsteigen? Behalte ich dann aber auch meine Konten und alle Mails? Danke und Grüße von einem alten Mann

When the latest version 128.8.1esr installed it broke the extension Provider for Google Calendar. It appears not to connect to google calendar.

Can I roll back to previous version of thunderbird which worked? Where do I find the file to install the previous version.

Thank you.

I have FullShot 10 which used to show my extra buttons in the FF toolbar. A few updates ago these buttons have disappeared from FF which is really inconvenient. Those buttons still appear in MSFT Edge. I cannot take a screen capture because taking a screen shot automatically makes the FS10 buttons disappear. FF10 is not add-on to FF, it is just a regular program to easy capture graphical screen information. FS10 has not been updated/altered in any way since its installation

How much longer will Firefox be down due to server updates on Mozilla.org? ALL of my extensions are disabled for that NLT 15 minute update that's been going on for well over an hour (I know, because my extensions are still disabled and have not yet reset themselves---Mozilla crapping them out, Mozilla returns them to my setup---to the way I had them configured. Specifically, the ones I'm missing the most right now are Tab Sidebar, Tiled Tab Groups, and whichever one(s) make bookmarks/new tabs open in a NEW tab, not clobbering a tab that is currently in use. I did that to open Duck Duck Go a minute ago, and had to re-write this whole support question because, for some reason, Duck Duck Go opened up in this ACTIVELY IN USE tab instead of a new tab. And not only that, it wiped the contents of this support chat window. Sorry, but that is totally UNSAT.

Thanks, jim74, [edited] @jdgblogs.com (which needs to change to [edited] @jstrack,net---how do I do that?), Firefox ESR 91.5.1esr on Slackware v. 15.

Greetings to y’all I am setting up a Microsoft Surface pro 7. Several days ago I installed windows 11 Pro on the machine.

I have tried to review previously loaded Extensions. For each of the Extensions There is a message:

"Can’t read and change data on this site"- listed after each extension. What is this about? How do I access settings for extensions?

Cheers trevor short [edited] @gmail.com

A new issue with Firefox. I download updates myself, not automatically. This morning after updating, I clicked to restart Firefox, and it restarts, but still shows that it needs to restart. Even after multiple attempts. How to resolve? Thanks

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 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!

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

Hello, today I could not launch Firefox on my Mac. Because this is a corporate machine from Kyndryl, I downloaded from Kyndryl App Store, I have rebooted the systems, I have updated iOS to last version, but still haven't solved the issue. This is the situation: Firefox is installed, I click to launch it, I am asked to authenticate with MFA I authenticate correctly, and Firefox just sits at the dock bar jumping, then stops jumping, and nothing else happens. I repeated the process several times, made several reboots, nothing changed. Can you suggest a solution?

i just received a notice that Firefox features will stop working soon for firefox for Android but now the note has vanished from my phone. None of the search features or help topics can answer my question

I turned my laptop on this morning and Thunderbird disapeared! It looks as though an auto update failed after the .exe file etc had been deleted. How can I re-instal (via my desktop if necessary which I am on here) without losing all my settings. The profile appears to be intact. Having re-installed, how do I connect to the profile which is on a separate disk?