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Gestern hat ALLES noch funktioniert und heute erscheint diese Fehlermeldung Ich habe keine Ahnung, was zu tun ist.

Ich hoffe, dass Ihr mir helfen könnt Dringende E-Mails warten auf Bearbeitung.

Tausend Dank für Eure Unterstützung

I use Firefox for privacy, lack of bloat, and other ethical reasons. For these reasons, I don't want to have the new CEO keep the incorrect idea in his head that the people who use Firefox want AI. Please don't add more AI, if anything--- please remove the AI which has already been added to Firefox which users have to remove themselves. I will dump Firefox if the new CEO continues with this plan.

hi today thunderbird started showing yahoo popup login and after adding credentials i always get "something went wrong.We could not sign you in. Try again from a different device." Also popup once closed it opens instantly.

i can sign in normally from browser. thunderbird version is 147

is there any fix about this?

thanks for any help

regards

How can I prevent Firefox from automatically opening tabs and switching to the tab every time I download a file?

The obvious thing would be to uncheck the box that says "When you open a link, image or media in a new tab, switch to it immediately"

Nice try, but U N F O R T U N A T E L Y, that method does NOT work! With the box unchecked, I still get a new tab that gets switched to.

I'm trying to download 10 years of bank statements. I do not want 120 tabs popping up!

Updating my Address Book in Thunderbird v148. The darned thing does not permit two people to have the same email address or phone number - pain in the "A" to say the least !

My android phone just recently updated my firefox version to 148 (this happened today, February 27, 2026).

Since this happened, I can no longer properly manage my bookmarks. Let me describe in more detail:

I have multiple sub-folders that I use to organize my bookmarks by topic. Previously, when I edited a bookmark, I could move it into one of these sub-folders by navigating to the sub folder on the bookmark editing page. Normal, expected behavior.

• Now* when I try to edit a bookmark, only the top-level "Bookmarks" folder is visible; if I try to expand that folder with the > carat icon, nothing happens. I only have the option to make *new* subfolders, not to navigate to subfolders that already exist.

To be clear: - I can find all my previously existing bookmark subfolders when I want to *open* a bookmark. - The problem is only when I want to *move* a bookmark into one of these existing subfolders. - When I edit a bookmark, I see the > carat icon that normally would expand the Bookmarks top-level folder, but that icon does not function. Therefore I cannot actually select any of my existing folders to move the bookmark into.

Can this function be restored to the normal behavior a.s.a.p.?

I'm attaching two screenshots to show that I have subfolders, but that I cannot access them when I edit a bookmark (pressing the expand button does nothing)

Thank you.

I have rules. Email goes to folders based on rule. I want to reply to an email and have the reply stay in same folder. How do I fix this to work again? What is happening only some out bound emails go into "sent" folder.

Hi,

I need some help! Thunderbird used to have archive settings in which I could choose to save my e-mails locally in my archive folders with 1 file per 1 email and not everything that's in a folder saved to a single file.

How can I get this back? Is there some hidden settings that can be accessed to get it done?

I need every email in one file! I'm going nuts trying to sort years of e-mail duplicates. If I can have a file per message, then I can at least use my PC duplicate file program to compare file content and find the similar ones. But with everything of one folder in the same archive file I'll be cursed to have to manually go through thousands of e-mails by hand! So if there is a way to return the previous archive format (*wdseml files??, it seems?) then I want to know how to set that setting.

Alternatively a local folder duplicate e-mail cleaning tool? There used to be some but I couldn't get it to work now!

My wife's inbox has over 24,000 messages. I'm moving messages whose senders are the most frequent to folders. This ends up having to move over 100 messages at a time, which is taking forever. Has anyone found a faster way to move multiple messages into one folder?

I am using internet server provider www. namespro.ca server settings for my email account set up with Thunderbird mail and the email account will not set up properly. I currently have (1) domain name "realestateX.com with www. namespro.ca and I am attempting to set the email accounts using Thunderbird Mail on a desktop CPU. The email accounts will NOT set up with ThunderBird Mail with this domain name, 'realestatex.com.' On the other hand, the same domain name email account were succcesfully set up on OUTLOOK using the same www. namespro.ca server settings with success, they work properly in and out

Back to the Desktop CPU and my Thunderbird Mail program; I have another email account set in with another domain email account realestatex.net with a completely different internet server provider www. webnames.ca and that email works fine in and out and the set up without an issue

Back to namespro.ca their server settings work fine with MS 365 OUTLOOK email set up on my DELL laptop. However the server setting from namespro.ca will not work on the desktop and laptop, The laptop set up is using a MOZILLA Thunderbird Account Hub and stated their is an "authentication error because of a policy violation relating to the refused connection from the IP" . Would namepro.ca IP connection refusing my thunderbird mail account to syne with namespro.ca? any insight would be helpful, appreciate your time

I am installing Tbird on a Windows 10 instance that I am recovering from backup. There is a default profile that contains a folder for a user in an IMAP domain that no longer exists. Tbird won't start and just spins with a message about a missing IMAP user.

I copied the profile to another backup folder. And then uninstalled and re-installed TB. The "AppData > Roaming > Thunderbird > Profiles" folder(s) are still there but empty. When I start TB it says: "Your Thunderbird profile cannot be loaded. It may be missing or inaccessible." The old email is not important now. Should I delete more folders in AppData, or what should I do next?