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I had to restart my Mac. When TB restarted during relaunch of the Mac, it was like TB starting fresh. It didn't display my email accounts, or my folders with saved emails, etc.

I quit TB and looked for it in my Applications folder - and I found two versions of TB. Inside the Thunderbird folder was version 140.9.0esr. Outside the Thunderbird folder was version 150.0. See attached screen grab.

I thought I should try launching the newer version (which was outside the folder). So I moved the 140.9.0 version to the trash, then launched the newer version – and it had the same problem. It looked like I was starting TB from scratch.

Next I quit TB (the newer version) and moved the older version out of the trash and back into the TB folder and double-clicked on it. A dialog box popped up saying that the file is damaged and can't be launched.

So I tried launching the newer version again, and it still looks like starting from scratch.

I really hope somebody can help me solve this. I can't access any of my email accounts or any of my stored emails. I use email for work (as most of us do), so this is crippling me.

Thanks in advance for any help.

I am a TD Bank customer who uses their Bill Pay feature. A recent FireFox update now prevents me from completing my payment sequence. Please alert me how this can be fixed. I like the FireFox browser but will remove it from my computer if no fix is offered. When I use Google Crome I have no problem completing my payment sequence. Thank you.

Bill Gibbons

[redacted email from public]

Earlier today I was trying to watch Prime video and I kept getting an error saying that Firefox wasn't updated (which it was). I looked up some solutions, one of which suggested turning the DRM setting off and then back on. That was a mistake, because after that, any time I opened Prime or netflix, the error I got was "Firefox is installing components needed to play the audio or video on this page. Please try again later. "

Then, I looked that up and found out that my Widevine was just not installing. So, I found an alternative way to manually install it, which shows that it is installed in the Add-ons Manager, but I keep getting that error and nothing works. Prior to this my Netflix was still fine and working.

I've tried a few other things including closing firefox, refreshing firefox from the troubleshoot settings, and restarting my computer.

I am out of ideas, and I wanted to see if anyone can help me before I have to jump ship to another browser.

Columns in Folder pane vanished on updating to 31.3.0. The pane used to show the folder tree, and then a column for unread messages, and a column for total messages in each folder. That was quite useful. Now, only the number of unread messages in the folders is shown, in parentheses. Is there any way to restore the former format?

The Firefox Linux Systems inappropriately stops to play online videos, the social media videos or display pictures. The system is not manageable by administrators at the public library and is only helped sometimes by government officials. Is there anyway the Library system could be helped to play videos.

Hallo und guten Tag, auf meinem Desktop habe ich seit einigen Tagen einen neuen Ordner mit der Bezeichnung - Alte Firefox-Daten - . Ich kann den Ordner leider nicht löschen. Alle Versuche sind bisher gescheitert.

Habe Mozilla Firefox schon 2-mal deinstalliert etc. Der besagte Ordner lässt sich trotzdem nicht löschen.

Angeblich wegen fehlender Berechtigung. Was kann ich machen?

Mit freundlichen Grüßen

Hermann Wieschebrock

I was following instructions for the problem of some task bar icons showing as grey boxes. Still have that problem plus added the problem that thunderbird launches with the setup accounts dialogue page. The 'help>troubleshooting information>profile file location' reveals the correct profiles that have been updated to the hour before I caused the problem. I have saved the '...roaming/thunderbird folder to an external SSD, and made a new new thunderbird installation following the instructions for moving files to a new computer. Problem persists. Thunderbird will not 'see' the profiles therefore I cannot see my emails.

Ich habe WIN 10 auf meinem PC und kann nicht auf WIN11 upgraden. Hatte Thunderbird schon installiert und problemlos im Betrieb. Leider konnte ich ab ca 19.12.2025 keine Emails mehr schreiben und empfangen. Ich habe mittlerweile zig Stunden versucht das Programm wieder zum Laufen zu bringen, aber erfolglos. Ich habe es 2 mal deinstalliert, aber mittlerweile kann ich es noch nicht einmal wieder richtig installieren (habe alle Thunderbird-Dateien - auch den Cache - auf dem PC gelöscht). In GMX Mail habe ich die Berechtigung Zugriff über POP3 u. IMAP erteilt. Ich kann leider keine jpg Datei mit näherer Beschreibung hinzufügen...

Viele Grüße Gerhard Deist Email: g.deist@gmx.de

After installing the latest Windows 22H2 HOME updates - I cannot run Thunderbird. Blue screen and message - This application will not work on your computer. What to do? MG

Hi there

I have mail servers from a domain xxxxx.is (Iceland) mail servers are of the form mail.xxxx.is

Cannot create email address manually (IMAP) -- even when off line (Windows outlook works !!) as after the email entered it shows looking up configuration provider and endlessly goes on and on (V60 of Thunderbird)

none of the other options work -- advanced config does nothing etc etc.

Surely the whole point of MANUAL config is that is DOESN'T try and find ISP config from a database.

cheers