Thunderbird Community Forum

The Thunderbird calendar, displayed by the week, Saturday June 27-Friday July 3, 2026 in my computer says today is Monday, Jun 28, whereas it is really Jun 29. Each day in the calendar is off by 1 day. e.g. tomorrow it says Tuesday Jun 29, etc. If I change the view to Multiweek, the dates and days of the week line up as 2 June 29s for Monday and Tuesday!. Wednesday becomes June 30 and Thursday skips July 1 and is July 2! What to do to correct all of these problems? Thanks, [edited email from public]

Hello,

I am experiencing a severe issue with the macOS system print dialog handling in Thunderbird, which started immediately after updating to version 152.

Environment

   * OS: macOS Tahoe 15.5.1 (26.5.1)
   * Hardware: Apple M4 (Silicon)
   * Thunderbird Version: 152 (Issue present) / 151 (Works perfectly)

Description of the problem: When I use the native macOS system print dialog within Thunderbird and select either "Open in Preview", Instead of opening the Preview app Thunderbird bypasses the command and immediately sends the document directly to the default physical printer. The same happens with "Save as PDF", the file-saving dialog is first presented, but after entering the filename the document is also sends to the default physical printer rather than being saved.

Steps to reproduce:

  * Open an email in Thunderbird v152.
  * Select Print...
  * in the Print Dialog window, select "Print using the system dialog" 
  * The system print dialog is opened
  * Click the PDF dropdown and select "Open in Preview" or "Save as PDF".

  Result: The document is instantly printed on the physical printer instead of performing the macOS system action.

Steps taken:

  * Tested with Thunderbird v151: The macOS system print dialog works perfectly as intended.
  * Upgraded to v152: The issue appears immediately and consistently.
  * All other applications (Safari, Chrome, Microsoft products, Apple Mail) work correctly 

This seems to be a serious regression in how Thunderbird v152 handles native macOS print system events and dialog actions on Apple Silicon / macOS Tahoe.

Any help or a fix for this would be greatly appreciated.

Best regards, Michel

MESSAGES IN 'INFOLDER' ARE DELETED AFTER ABOUT 5-7 DAYS, and can't be found I have looked in all settings to try to find the reason, but don't find anything helpful tnx, Al email [edited from public] @ec.rr.com

Ich erhalte die Meldung "Nachrichten konnten nicht in die Mailbox-Datei geschrieben werden. Stellen Sie sicher, dass das Dateisystem Ihnen Schreibrechte einräumt und genügend Speicherplatz zur Verfügung steht, um die Mailbox zu kopieren." Speicherplatz ist genügend vorhanden. Bis jetzt konnte ich meine Emails problemlos abholen. Bin erreichbar über Telefon [edited] oder Handy [edited phone#'s from community support forum]

Previously, when I run a full scan, a box will appear at the bottom of the screen stating that full scan is running and when it's finished, this appears full scan is finished and stayed on until I check Norton. This has not occurred for a long time. How can I fix this? Thank you for your consideration and I look forward to hearing from you.

Dear Support Team,

I am writing to report an issue I am experiencing with Thunderbird. Every time I use Thunderbird, an attached error message keeps appearing. This problem is delaying my work and affecting my daily tasks.

I kindly request your assistance in checking and resolving this issue as soon as possible. Please let me know if you need any additional information or screenshots of the error message.

Your prompt support would be greatly appreciated.

Thank you

My emails were all working (accounts were setup fine). Then, recently, when I opened Thunderbird, the main area (where my messages are displayed) is empty. If I choose another folder, still empty. BUT, the folders all say that there are messages in them (see the attached screenshot)

I have tried the following... 1. Opening Thunderbird in Troublshooting mode: This works, and the messages appear. But I don't want to have to open troubleshooting mode every time. 2. I have ZERO extensions installed, so asking to disable them obviously wont do anything. 3. I have tried to repair the folders (I have tried to repair the default inbox folder, and then tried to repair them all ... nothing worked). 4. I have backed up my thunderbird files, and tried reinstalling Thunderbird. Still didn't work. 5. I tried these three steps ... https://www.mboxtooutlook.org/blog/thunderbird-inbox-missing-emails.html Didn't work either.

Any other suggestions?

I have downloaded Thunderbird on to my desktop but it won't open. Please help me to open and use Thunderbird.

email: [edited] @phonecoop.coop #Tel: [edited email and phone# from public community support forum]

sw

Several times a day, TB pops up a message box with the following...

The folder 'Inbox on email@domain.com could not be compacted because writing to folder failed. Verify that you have enough disk space, and that you have write privileges to the file system, then try again.

I have a few accounts in TB, and it does this for all of them, but at seemingly random times.

Everything seems to work, it's just annoying to have these messages pop up.

I have 0.9Tb free space on the disk, so I don't think it's a lack of space! I also have admin rights to the file system, so that's not it either.

Anyone any idea why I get this? Thanks

Each time I start TB, I get this message: "The folder 'Inbox on redacted@aol.com' could not be compacted because writing to folder failed. Verify that you have enough disk space, and that you have write privileges to the file system, then try again." What does this mean and what can I do to fix it. Thanks. M. Campbell

At startup of Thunderbird, get error related to Outlook which I do not use. Get message - "UserHasNoMailboxandNoLicenseAssignedError"

How do I get rid of this error, has been present since last esr release and expected it to go away with new release - did not. Do I have to reinstall Thunderbird to clear.

Today in two of my accounts I get error message "Unable to open the summary file for Inbox on imapML. Perhaps there was an error on disk, or the full path is too long." Two other accounts work fine so no error on disk, and full path hasn't changed.

Hi, everyone,

I have a strange problem with my TB installation - when I go to repair a folder through it's properies settings, TB deletes BOTH the message (mbox) file and the index (msf) file. There is nothing wrong with either (the folder is fine) - I'm just testing out TB's functionality as I'm moving to it.

The settings are set to always download everything and always keep everything. It's TB version 143. The reason I know the files get deleted is - if I disconnect the Internet connection and click Repair Folder, then go into the profile directory, the mbox file is just gone, while the .msf is sitting at 0Kb waiting for the connection to re-establish. Only the connection is back, TB re-downloads both the index and then ALL the messages in the account...! This is, obviously, highly problematic.

My question is two-fold: - is the expected behavior of the "Repair Folder" button to work offline? Should folder repair be possible even in offline mode? - has anyone else encountered this? I reported this on Bugzilla, along with another fellow who has encountered the same: https://bugzilla.mozilla.org/show_bug.cgi?id=1997845 But it appears the developers have a hard time believing it's actually happening...

Many thanks!

Whenever I want to print an email the print preview doesn't show, it keeps displaying a spinning wheel. Printing also doesn't work (as in, I press Save, enter a filename and press Save; the dialog closes but no file is generated).

I already tried the Troubleshooting information -> Clear saved print settings, but to no avail.

Browser console screenshot attached. I'm using Fedora 41 and Thunderbird 128.11.0esr (flatpak).