Thunderbird Community Forum

My Thunderbird installation (159.0/Windows11) has evidently just updated, and my Calendar tab is suddenly a complete blank space. There's a support article here that appears to discuss exactly this situation, and gives precise steps for getting into "Config Editor" in Advanced Settings, entering a long search string, and issuing a Reset command. (Mail and contacts are just fine.)

Which I tried...

But there is no "Config Editor" button in the dialog I get when clicking Advanced Settings at the bottom of the Settings tab, only a mostly blank screen with no list of settings and a dialog box in which one can enter text (with options for "Boolean", "Number" and "String"). And entering the search string given in the support article produces, with a bit of finagling, a toggle that will change its setting from True to False and back again (and a trash-bin icon that offers to delete it), but neither "True" nor "False" produces any instance of a "Lightning" extension in my list of extensions (which is short and uncomplicated), so (a) I can't delete the extension as instructed, because it's not there, and (b) restarting Thunderbird only continues to give me the unhelpfully blank Calendar tab. (And I do mean "blank" here - there isn't even an empty calendar grid on that tab at this point.)

I *think* the article is probably right that my data is still there (I can see .ics files with current dates in File Explorer), but at this point I can't get at it and can't seem to get the interface unstuck.

Since yesterday , Thursday 29th October. Thunderbird has only been displaying the "Inbox" for my account, no emails are visible in it and all of the directories including the deleted emails directory and spam directory are absent. I have Windows 11 installed. I am using the IMAP server for incoming email and have checked that all the settings are correct. My account displays no incoming emails but can send emails. The directories are still absent when running Trouble shooter and the inbox is still empty. In the Account Settings - Server Settings I tested connection to the server and it said secure connection made - this worked for both outgoing and incoming servers. I have tried uninstalling and reinstalling Thunderbird but the issue persists. Although I do not change any settings the full set of directories will occasionally appear along with some emails and then seconds later disappear again. My email account is working fine on my phone and tablet using gmail.

When I attempt to send an email in Thunderbird I get an extensive string of gibberish that I have to delete before I can send the email. What can I do to get rid of this huge irritation? Thanks

This just started yesterday: When I open thunderbird my inbox does not show up unless there is a new unread email in it. Also my previously set display columns and tool bar all have to be reset each time I open Thunderbird.

My local Thunderbird program (159.0 (64-bit) on Windows 11) is set to auto-install updates. Upon the update completing earlier today, the inbox and other folders were completely empty. They remain so following a program & computer restart, and also opening the program in troubleshooting mode. I have checked the following: - logging into the online mailbox directly works, and shows all emails - sending a new incoming email to the email address does have the email show up in the remote mailbox but not the local mailbox - sending a new outgoing email from Thunderbird does appear in the local Sent folder, as well as on the receiving email account - the local Thunderbird instance is still able to connect to the IMAP Mail Server (mail.talktalk.net) - the following settings are configured, and I believe haven't changed since prior to the update:

 - Check for new messages at startup is **enabled**
 - Check for new messages every 10 minutes is **enabled**
 - Clean up (Expunge) Inbox on Exit is **disabled**
 - Synchronization & Storage: Keep messages in all folders for this account on this computer is **enabled**
 - Synchronize all messages locally regardless of age is **enabled**

I have ~100gb of space available on my hard drive

I'm not sure what other settings might be helpful. Please let me know if there's anything else I should add.

My issue has two parts. The first is that I want new emails to appear in my local email client upon arriving, as they did previously. The second is that I want to have the full set of emails on my remote account available locally, which is currently no longer the case. There is also no sync activity happening, and apart from establishing the initial connection to the mail server I can't see any activity in the bottom left corner.

cannot seem to send emails to multiple people without going thru mail merge. I can no longer type the persons name in to: field and it will not autofill. I tried to go to calendar function and got a blank screen.

Can I go back to a previous version?

Whenever I start my PC, the first time I click on the Thunderbird icon at the bottom of my screen (is that still called the taskbar?) I have to click on it a 2nd time to get it to open. After that I only have to click on it once. Does anyone know I can get it so I only have to click on it once the first time as well as understand what may be causing this problem?

My TB installation got corrupted due to a hardware/disk issue. On restoring it from backup TB keeps trying to download all messages again. I know this is something to do with the popstate.dat file but I can't seem to stop it. What do I need to do?

Also, I had never noticed this before (because I never looked at the TB file system) but TB created multiple folders for the email account.pop.mail.yahoo-1.com up to pop.mail.yaho-4.com. Why does it do this and is there a way to get back to just one file? Is this something to do with TB crashing or what?

Is it using all of these files or just the latest and how do I know? All of these folders have a popstat.dat file and one has multiple following the popstat-1.dat etc.

I've no idea how to recover from this. Any help would be much appreciated.

When I open Thunderbird, the attached error message pops up, three times, and I cannot receive any emails from sa.mcpherson@comcast.net

I am using Thunderbird as an email client. I have the option set to normally send emails as plain text. If I receive an email that is formatted and then reply, the email is composed as unformatted. I wan the reply to be formatted.

Is there anyway Thunderbird can detect formatting and automatically format the reply the same as received?

How can I reply to an already formatted email so that the reply is formatted?

I had to buy a new computer and reinstall my Thunderbird. I'm running version 158.0.1 (64-bit). When I have an email with a bunch of replies, it always opens each reply in a separate tab. In the past, the solution was tools -- preferences -- general but when I got to tools, there's no preferences option and I have clicked on everything possible there and in settings. I need the email to open as a single tab, closing a bunch of tabs is a real pain. I'd appreciate if anyone has a solution they can share.

My e-mail stopped working a week ago. I get as far as "connecting to IMAP but then get a "Login to server imap.orange.fr with username [redacted]@orange.fr failed" message. I have changed the IMAP and SMTP passwords several times but none seems to work. What am I doing wrong?

TB is not downloading pop3 emails again.

What does this mean?

NetworkTimeoutError: a Network error occurred Pop3Client.sys.mjs:380:18 SecurityError info: Pop3Client.sys.mjs:440:20 SecurityError cert chain: legacy.pop.mail.yahoo.com; serial# 07:CF:5F:D8:B7:96:17:C0:9F:C0:58:12:90:5A:41:8F <- DigiCert Global G2 TLS RSA SHA256 2020 CA1; serial# 0C:F5:BD:06:2B:56:02:F4:7A:B8:50:2C:23:CC:F0:66 <- DigiCert Global Root G2; serial# 03:3A:F1:E6:A7:11:A9:A0:BB:28:64:B1:1D:09:FA:E5 Pop3Client.sys.mjs:445:22

I want to connect Thunderbird to an Office 365 calendar. All of the help files I've found point me to TBSync, but when I try to get that using the Add-ons manager it says that it's not supported in version 159. Is there another approach I can use? Thanks!

Hallo,

ich bitte um Hilfe, seit dem letzten Update von Thunderbird auf 159.0 (64-Bit) sind meine Mailaccounts verschwunden. Eins konnte ich wieder einrichten, das von T-Online bringt als Fehler ständig "Fehler bei der Authentifizierung" obwohl alles korrekt ist. Thunderbird kann sich automatisch die Serverdaten für IMAP holen, aber sobald ich das Passwort eingebe kommt der Fehler. Das Passwort habe ich jetzt bereits geändert, dennoch funktioniert es nicht. Was kann ich tun?

I followed the instructions in the aritcle on the search page and it still didn't work. I worked with Geek Squad. They completely did all kinds of different settings and they all failed. When I click the test button, it says it connects successfully.

It tells me to retry or update the password.

I am absolutley typing in the correct password.

I installed the newest update this morning - and since then, the background color in all areas have turned black? I tried to change to white in settings (html selections) - but it does not change. Still black. WHat can be wrong?

For the first time I am trying to add several different email accounts to Thunderbird on my Windows 11 laptop. One worked fine (i.e. second email account). The next, from a different email provider, only has an inbox, no other folders. Local folders now appears below the this last email account, and includes copies of the primary email account Sent folder and my Invoices folder. There are more items in this copy Invoices folder than in the version listed straight under the primary email Inbox.

My aim is to have several different email accounts, each with their own Inbox, Sent, Drafts, Deleted, and the capability to add Folders as I wish. But I am thoroughly confused, having tried and failed to add the usual and any extra folders to this email account. Would be grateful for any advice.