Thunderbird Community Forum

Hello Folks, We are a team of 15ppl using thunderbird from last few year and it work flolessly in these years but from last 1week i have been facing a serious issue of : INCOMING EMAILS TAKING A LOT OF TIME TO OPEN AND READ, fresh email when received and after clicking it takes a lot of time of open, having a 100mpbs ILL speed, out of 15 / 12 ppl are facing same issue, even after repairing the inbox the issue remains same, mails are getting downloaded very slowly...we are using google imap server for the same, need help to resolve the same...is it the bug in the latest update 153.0.3 (64-bit) Meadow badge

I am encountering a message of "The installation seems to be incomplete. Please check your hardware and disk setup and/or re-install." when trying to run Thunderbird.

This first occurred on a system that had been working for a while. An update may have been installed.

Here's what I've tried. -

Uninstall Thunderbird (along with Firefox and Mozilla Maintenance.) Checked for Program Files/Mozilla folder (all were removed). Run SFC / Scannow Run CHKDSK Installed pending Windows update. Restarted the System Renamed (essentially removed) Profiles folder Turned antivirus software off Downloaded and installed the latest version of Firefox, then Thunderbird. Launched Thunderbird. Still received the same error..

Any ideas on how to resolve the issue?

Thunderbird Message Filters Here are the problems (nothing corrected in newer versions-since forever) Each time the app is closed and reopened, or Shutdown and restarted one or more of the following has occurred : “Message Filters“-main page 1) “Run selected filters on:” (folder dropped or changed) 2) "Enabled" Marks are dropped “Filter Rules” page 1) “Move messages to:” Folders are dropped Help! rb

Your last update included a Yahoo signup splash screen. Please remove it in the next update. It is annoying and does not serve any purpose other than ccnect me to Yahoo web mail. If I wanted to use that service, I sign in for it. I am content with using Thunderbird. Or at least give me the option of removing it myself. Thanks.

SHello Sometimes, on my iMac APPLE (OS Tahoe), THUNDERBIRD stops opening (message system: not responding ("ne répond pas" in French) There is no problem when launching the application, but issues arise later when returning to it after using other applications (Word, Excel, videos, etc.), THUNDERBIRD tourne en rond et ne s'ouvre plus. I have to close the application (via my Mac's system settings) and relaunch it for it to open normally again. I would appreciate any help if someone has experienced the same kind of issue. VAJP

This isn't really about messaging, it's about attachment printing, but I can't find a better topic to file this under.

I get emails with PDF attachments dozens of times a month. When I print the PDF's, I always select "print headers & footers" and never had an issue until this morning. Now if I "print headers & footers" all I get is headers & footers, no portion of the PDF file is visible on the printout. If I unselect that, what I get is a blank page. Changing margins doesn't help. Changing the Scale doesn't help. Saving the files and then printing them from Adobe works fine, but obviously I don't want those extra steps and I DO want the headers & footers from Thunderbird.

Windows 11 home, 25H2 26200.9168 Thunderbird 154.0 64 bit, it auto-updated itself to this version sometime in the last day or two.

After doing the last update when I open a PDF file inside Thunderbird And I try to print I get blank pieces of paper but no print. Have tried re-installing printer but get the same results. Can you assist.

I have two email accounts (one is imap, one is pop3) in my older version of Thunderbird. They have both worked normally until last week. The pop3 account continues functioning normally, but now when I select (in Thunderbird) the imap account, the mouse cursor starts showing the hourglass and the bottom status bar reads "loading message" . I've closed and restarted Thunderbird, but this doesn't make any difference. The imap account is stuck on "loading message" and doesn't download anything. I also checked my imap email account on the ISP's website, there is new email there waiting to be downloaded,. What can I do to troubleshoot this?

ps...a few weeks before this problem surfaced, I had all my email (inThunderbird) disappear, so I renamed the prefs.js file and that fixed the problem. My email worked normally after that, until this current problem occured.

Somehow my account folder has duplicated itself, complete with Inbox, Drafts, Sent and Trash. Going to Settings, I can't see any difference. Both continue to be updated with new mail. How can I delete the duplicate? I see nothing in 'Account Settings' that would let me delete it.

Hello Thunderbird Support, I am experiencing a severe IMAP folder synchronization loop with my Yahoo Mail account ([redacted]@yahoo.fr) inside Thunderbird. Yahoo Support claims the issue is caused by Thunderbird's folder mapping, so I am reaching out to you for a solution.

1. 1. The Problem:

The system-protected folder "Bulk" (Spam) has somehow been moved or mapped as a subfolder inside the "Trash" folder.

• In the Yahoo Mail Web UI (Chrome), the subfolder is invisible, but the Trash directory shows an arrow (^) indicating a child folder exists.
• In Thunderbird, the Bulk folder is clearly visible inside the Trash folder, marked with the flame (Junk) icon.

1. 1. What goes wrong:

When I delete spam messages via Thunderbird, they get trapped inside this nested Trash/Bulk directory. If I try to delete or empty it, the emails disappear but the folder itself cannot be removed.

1. 1. Steps tried so far that failed:

1. Attempting to delete or rename the Bulk folder inside Trash gives the server error: [CANNOT] DELETE failed - Mailbox is reserved. 2. Using Shift + Delete on the folder is rejected by the Yahoo server. 3. Unsubscribing from the folder via "Advanced IMAP settings" -> "Show only subscribed folders" fails; Thunderbird re-downloads the structure on the next sync. 4. I have completely deleted my old Thunderbird profile folder and created a brand new one using thunderbird.exe -P. Upon adding the Yahoo account via OAuth2, Thunderbird immediately pulled the same broken Trash/Bulk structure from the server again.

Since Yahoo refuses to help and claims Thunderbird caused this mapping loop, is there a hidden config setting (about:config) or a database override in Thunderbird that can force the server to release or move this reserved folder back to the root directory? Thank you for your assistance.

Dell Desktop - Windows 10 to Lenovo Laptop Windows 11 I followed the Alternative Manual Transfer between Windows 10/11 Roaming Profile and Local Profile Now on Lenova - Mozilla will not open - Profile Missing - Your Thunderbird profile cannot be loaded. It may be missing or inaccessible. I do not know how to uninstall it or how to start over.

T-Bird's pop-up window requesting password keeps popping-up on my screen every 15 to 30 minutes or so ALL DAY, regardless of whether or not I fill-in the password or cancel the po-up. No idea how to make the sun-on-da-beach stop! PLEASE, anyone that has experience w/this... HELP!!!

I've encountered a stange issue: By default, a quoted reply is indented to the right with a vertical line on the left side. Since some time, this vertical line disappears when composing a reply - i.e., when clicking "reply", the compose window opens where the vertical reply bar shows up on the left for a split second but then disappears, leaving just the quoted text without indentation or reply bar. Compose in HTML is on, but it shouldn't matter for the reply bar display anyway. Reply quoting is also enabled, of course.

I know the reply bar can be toggled in the config by mail.quoted_graphical and mail.quoteasblock, but both values are already set to true. Setting them to false should completely disable the reply bar, but it shows up for a split second and is "auto-removed" in the compose editor. It's also not just a display issue in the editor because a recipient doesn't see the reply bar either.

Is there anything else I can check? Most likely it can be resolved with a clean profile, but I want to save the pain of setting up everything again if possible. The issue occured over the span of multiple recent TB versions on Windows 10.

Hallo,

ich benutze Thunderbird 154.0 unter Windows 11 Pro, aktuelle Updates. Seit geraumer Zeit bekam ich die Meldung, dass Ordner Posteingang nicht komprimiert werden kann, weil er ungültige Daten enthält. Das habe ich heute abgeklemmt, indem ich die automatische Komprimierung abgeschaltet habe. Danach war eigentlich alles gut und ich hätte besser nichts mehr machen sollen. Aber dann entdeckte ich den Button "Ordner reparieren". Nachdem ich den geklickt habe, werden mir im Posteingang keine Mails mehr angezeigt, Anzahl = 0, Größe auf Datenträger jedoch 2,3 GB. Die Daten scheinen noch vorhanden zu sein, nur die Anzeige scheitert. Im Papierkorb sind die vermissten Mails auch nicht zu finden. Alle anderen Ordner sind inhaltlich ok. Ich habe eine 5 Tage alte Sicherung, die ich auf einem anderen Windows-11-Rechner mit frischer Thunderbird-Installation eingespielt habe. Leider zeigt sich dort nun das identische Problem. Hat jemand eine Idee?

Viele Grüße Peter

Hello, T-bird gurus! Hoping someone, or a collective of someones, can help me out, as I just started using T-bird again after an intermission of over a decade, and I'm experiencing several progress-stifling and highly frustrating issues that unless easily overcome, will soon have me doubting my choice and abandoning the attempt (although I'd love not to have to). Whenever a new message is received, T-bird's pop-up notification lets me know that it has arrived, and the new message counter in the taskbar also displays an updated count, yet, more times than not, the inbox simply refuses to display the new message/s. When this happens, even if I switch out of the inbox into another folder and then back to the inbox, the new message/s are displayed (but the counter in the taskbar icon DOES reduce the count, as if read). If I was lucky enough to be looking at my monitor at the same time that the notification popped-up, and I was able to read who it's from before it vanished, and then performed a search for that specific sender, the search itself displays the new message, and I am even able to reply to or forward it from there, but STILL... no new message in the inbox once I return to it! Seems the ONLY way to get it to display in the inbox as it should is to close T-bird and re-open it... Then, there it is, sitting in the inbox, taunting me like a child that knows he's got your number when it comes to playing hide-and-seek (lil' booger!). Between this and my other T-bird issue (which I will put in a separate help request), it's got me ready to just pull the plug on TB and add my account to my company's Outlook... which I'd HATE to have to do, especially because it's setup through an enterprise account along with the rest of Microsoft's now full-subscription suite of programs that command a lifetime of automatic monthly payments in order to use them, so if I ever cut ties with that company, I might run the risk of losing access to my other email accounts. Not to mention the uneasiness that loading my passwords into that type of shared system has me feeling, in general. HELP!!!

My computer had corrupt files on it, so my computer guy had to reinstall windows 11 & all my other folders to my computer. I re-installed Thunderbird with the new version 154.0 & all of my old emails are there but NO email addresses or contact addresses I had saved in there. Please help! Can I download an older version of Thunderbird 139.0.2 from June 17, 2025 for all of my email addresses to be there & contact addresses?

In a prior version of Thunderbird all the folders with new e-mails were grouped together in a separate pane that appeared at the top of the folders list. In the latest version of thunderbird, this feature appears to have disappeared. Is there a way to restore this feature?

Hello. I regularly sign up for online conferences, then when I get the confirmation email with the details I can't transfer it to the calendar. I even tried saving the ical event separately but when I try opening it using Thunderbird I get an error message. The only way I found is to transfer the contents manually and create an event on calendar, which is time consuming. Anyone knows how to fix this? Thank you in advance