Thunderbird Support Forum

Server disconnects ONLY when attempting to open the"SENT" file. Have two accounts on Thunderbird with identical settings (email1 and email2). One works fine and the other disconnects only when I attempt to open the "SENT" folder. Have several months of sent emails that will not download.

I've just started getting error messages that I need to enter my password to send emails. I've tried that but it still keeps saying unable to connect to the server. This has been happening for about two days now. I've tried updating Thunderbird, restarting Thunderbird and restarting my PC. None of this has worked. I made no changes to my system, software or home network. Any help would be appreciated. Thanks, Dave

If you are one to search around for Thunderbird releases, you may have stumbled onto 127.0 from an unofficial site. I recommend you NOT use it. It is a beta, but not on the beta release channel. It is not intended for general use. Please ONLY use official releases from https://www.thunderbird.net/ If you do install this version, you will be presented with a warning message (see attached).

Company uses office 365, I have my Thunderbird. Since a couple of weeks sync issues appear (i.e.: TB has no right to delete folders in office 365). Finding a solution took several hours in various forums - nothing helps. - the only suggestion I didn'T try so far is asking the office365 helpdesk.

Problem description: When I delete folders they reappear at the old position. empting the trash yields also reappearance in trash. Same for moving folders - a copy is made, but at the old position and empty folder remains. They are gray - so hidden folders. Overwriting obviously does not work, as the folder already exist, but is not accessible. subscribing/unsubscribing does not work. In office365 the folders do not occur. If I create a folder in office 365 (web, outlook) it appears in TB. When I delete it in office 365 (web, outlook) it disappears in office 365 (web, outlook) but reamains - in gray - in TB. By now, the number of gray empty undeleteable folders has grown significantly. Only solution I got sofar is to switch from TB to outlook. :/

In the past I had used Thunderbird for both email and calendar for multiple accounts. I just downloaded Thunderbird onto my laptop (PC running Windows 11) and added all of my accounts and they are all synced. However, I can't edit or delete any event from any of those accounts directly in Thunderbird, although if I make changes on a different device they will sync and update properly. I never had this problem when I used Thunderbird before. I didn't see any permission settings that would allow me to do this so I'm stuck. Any suggestions? Thanks!

I've been using Thunderbird for years with no issues but suddenly this week it froze and although I could send e-mails from my Mac (running on Sonoma 14.5) I couldn't receive any. There was no message error, just nothing happened: it was frozen. So I finally opted to disinstall and then reinstall Thunderbird and now have incoming messages again but everything else I had: all my tags, e-mails older than a day ago, my address book have all gone. I've tried doing "import from profile "default" then choosing to import accounts and settings, address books, and mail messages but just get a message that "import failed unexpectedly, more information may be available in the Error Console" but I've no clue how to find the Error Console in question. Can anyone walk me through how to fix this issue and recuperate my old Thunderbird account without using all sorts of technical terms? I'm not IT-fluent! Many thanks.

I suffered a BSOD on my fully up to date Win10 Pro (v 22H2, build 19045.4474)

Upon rebooting, Thunderbird is failing to open. The error message is:

   Unable to open the folder Inbox on xxx@example.com because it is in use by some other operation. Please wait for that operation to finish and then select the folder again.

There is no other process using the Inbox folder. I have rebooted and the error message persists. It looks to me like the more correct message would be that the Inbox or the profile is corrupted.

I see other threads asking how to restore a corrupted profile, but none of the answers are very useful. They all see to be tips on how to restore a backup of the profile at %APPDATA%\Thunderbird\Profiles.

If I had a backup of that folder, I wouldn't need to ask how to recover a Profile after a crash.

If it helps at all, when I opened the Error Console in Thunderbird, I see the following messages:

``` Uncaught Error: Component returned failure code: 0x8055000a [nsIMsgFolder.updateFolder]

   updateFolderAndNotifyOnLoad resource:///modules/DBViewWrapper.jsm:88
   open resource:///modules/DBViewWrapper.jsm:812
   _onSelect chrome://messenger/content/about3Pane.js:2578
   handleEvent chrome://messenger/content/about3Pane.js:1597
   <anonymous> chrome://messenger/content/about3Pane.js:128
   read resource:///modules/LineReader.jsm:60
   _actionListResponse resource:///modules/Pop3Client.jsm:1033
   _onData resource:///modules/Pop3Client.jsm:356

DBViewWrapper.jsm:88

Component returned failure code: 0x80550005 [nsIMsgFolder.msgDatabase] ext-mail.js:2555

   findNewMessages chrome://messenger/content/parent/ext-mail.js:2555
   onFolderIntPropertyChanged chrome://messenger/content/parent/ext-mail.js:2522
   _actionHandleMessage resource:///modules/Pop3Client.jsm:1245
   _actionRetrResponse resource:///modules/Pop3Client.jsm:1405
   read resource:///modules/LineReader.jsm:65
   _actionRetrResponse resource:///modules/Pop3Client.jsm:1371
   _onData resource:///modules/Pop3Client.jsm:356
   AsyncFunctionNext self-hosted:852

Component returned failure code: 0x80550005 [nsIMsgFolder.msgDatabase] 4 ext-mail.js:2555

```

There must be some tool that validates the Profile independently of Thunderbird.

I'm a freelance writer, and often when querying an agent or publisher, they ask me to send the first "x" pages of in the body of the email (NOT as an attachment), and they want it double-spaced. It's double-spaced in Word, but when I paste it into T'bird, it's single-spaced. I've tried everything I can think of, to no avail. Is there a solution or work-around?

A while ago my long-time hotmail account stopped working on two computer with windows 10 and one with windows 11. Last night, I looked up an article that said I have to use Oauth2 instead of normal pw. I made that change on the windows 11 machine and a popup occurred that wanted the number from the google authenticator on my phone. I gave it that and it checks mail now just fine.

This morning I went to one of the Windows 10 machines and did exactly the same. I tried some different server names online and tried some, but after a while I started getting a little window that asked my email address and pw. I put my hotmail address in and got this message:

Microsoft Accounts or personal email addresses don’t work here. Make sure you enter your work or school account (e.g. user@contoso.com). If you want to reset a Microsoft Account password, click here.

Now this is the very same hotmail email that worked on windows 11 with the same server settings last night. It still works.

Now, on the windows 10 machine with those same settings, I get the blank extra window. The extra window appears, does not populate, and disappeared.

It is: https://login.microsoftonline.com/common/oauth2/v2.0/authorize?response_type=code&client_id=9e5f94bc-e8a4-4e73-b8be-63364c29d753&redirect_uri=https%3A%2F%2Flocalhost&scope=https%3A%2F%2Foutlook.office365.com%2FIMAP.AccessAsUser.All+https%3A%2F%2Foutlook.office365.com%2FPOP.AccessAsUser.All+https%3A%2F%2Foutlook.office365.com%2FSMTP.Send+offline_access&login_hint=redacted@hotmail.com

I had no opportunity to do what worked on the windows 11 machine just last night. I cannot check mail on hotmail on this windows 10 pc. I took all the updates available to Thunderbird and firefox. TB is 115.11.1

I'm stopped. Why would it work on one pc and not another? Oauth2 on the windows 11 asked for authenticator. On the windows 10 it never asks.

Good morning. I have been unable to receive e-mails since 30/05/2024. Has the fact that I received an e-mail message from "Mail@voice" <mboudreaux@firmgroupagency.com> on 31/05/2024, got to do with the problem. I would be grateful could help solve the problem. Thank you. Emyr Davies.

Recently the email display has been changed and not by me. At present I cannot receive emails as previously. Also I wish to revert to the previous display of my emails if possible. I can access email via the email.telstra,com site but I wish to stay with Thunderbird. I also do not get emails to my mobile as before

I would like to customize styling for recurring events in Calendar (115.11.1 on MacOS) without using extensions/add-ons. I enabled userChrome.css (`toolkit.legacyUserProfileCustomizations.stylesheets`) and the “has:” selector (`layout.css.has-selector.enabled`). In my userChrome.css, I added styles:

   li:has([alt*="Recurring"]) { background-color:grey !important; padding:1rem !important; }
   li:has(*[alt*="Recurring"]) { background-color:yellow !important; padding:1rem !important; }

Unfortunately, this seems to have no effect upon restarting Thunderbird. However, when I open Developer Toolbox (`Tools > Developer Toolbox > Developer Toolbox > Inspector` tab) suddenly everything works and the stylesheets are applied, but only until Thunderbird is shut down. Weirdly, other custom styles in userChrome.css work ok.

Is this intended behavior or a bug?

I keep getting this message sporadically: "Sending of the message failed. The message could not be sent because connecting to Outgoing server (SMTP) smtp.hughes.net failed. The server may be unavailable or is refusing SMTP connections. Please verify that your Outgoing server (SMTP) settings are correct and try again."

I sent messages yesterday with no problem!

I can't see any issue with the SMTP settings. I've tried troubleshooting mode.

One of my email accounts (the main one) has stopped downloading to my asus Vivobook 15 laptop. My other two accounts are downloading okay and the account that is not downloading to my laptop is downloading to my Samsung mobile phone okay. Please can you help.

I have a SOGo server that holds my address book. The SOGo web interface allows setting of custom properties, something I have used for a long time without problems. I have accessed the address book with Thunderbird both on Windows and Linux (today Windows 11 and Debian 12).

Lately I have problems with synchronization and now I have tried to understand why. I believe that the problem is connected with the transition to vCard Storage in Thunderbird. (See https://developer.thunderbird.net/thunderbird-development/codebase-overview/address-book)

In the Thunderbird error console (on Debian 12 using Thunderbird 115.11.0(64-bit)) I get for a simple VCARD with one custom property (which I created in SOGo):

09:24:18,136 carddav.sync: Error parsing: BEGIN:VCARD UID:56377-6667FA00-1F-59090880.vcf VERSION:3.0 CLASS:PUBLIC PROFILE:VCARD N:With Custom 1;AAAAAAA FN:AAAAAAA CUSTOM1:My custom value END:VCARD CardDAVDirectory.jsm:595:15

09:24:18,136 NS_ERROR_UNEXPECTED: Unable to set Custom1 as a property, use vCardProperties

   setProperty resource:///modules/AddrBookCard.jsm:394
   vCardToAbCard chrome://sogo-connector/content/messenger/startup-overlay.js:551
   fetchAllFromServer resource:///modules/CardDAVDirectory.jsm:590

CardDAVDirectory.jsm:596:19

It does not matter if the SOGo Connector plugin is activated or not.

Best regards Jan

Hello,

I work in a company and we are using Thunderbird for emails. The way me and my coworkers work is that we solving emails we get. BUT. There are two people always here on emails. One of them is taking ODD emails, the second one EVEN. For example I'm the ODD one, so every email that comes in odd time for example 8:31, 8:43, 8:47 etc., are mine and the other person who is EVEN one have emails like 8:30, 8:40, 8:52 etc. So if I make 2 folders one will be called EVEN and the other one ODD is there some way to filter these emails by time?

Thanks for your help and answers

thunderbird 115.12.0 (64-bit) Operating System: KDE neon 6.0 KDE Plasma Version: 6.0.5 KDE Frameworks Version: 6.2.0 Qt Version: 6.7.0 Kernel Version: 6.5.0-35-generic (64-bit) Graphics Platform: Wayland

Setting themes to an addon - eco theme ( or any other ) , the theme is applied, after restating thunderbird it ignored even though it indicates its enabled. The theme applied is all white

Hi,

I'm trying to automate / batch set the "When getting messages for this account, always check this folder"-setting for a large number of folders so I'm trying to figure how Thunderbird stores the setting(s) of which folders to always check for new mail.

Checking the `global-messages-db.sqlite` it seems like all folders that have the "always check folder"-setting have a `indexingPriority` value of 30 in the `folderLocations` table, but simply setting it to 30 for other folders does not enable the "always check folder"-setting so I guess that is set elsewhere. Where?

Also what other settings are set for the folder when enabling "When getting messages for this account, always check this folder" ?

Thanks in advance /frax

Dear Support,

we want to intergrade Thunderbird to our Microsoft 365 (Exchange Online), but we have massive problems with the authentication of our users.

I have allready configured an the Enterprise Application for Thunderbird in Entra ID and the Clients, excactly as documented in you article: https://support.mozilla.org/en-US/kb/microsoft-oauth-authentication-and-thunderbird-202

We have conditional access policies in out Entra ID, which allow only comliant devices to acess out Exchange Online.

The Thunderbird clients are running on these compliant devices (Windows ans macOS), but it seems that the client is not passing this information through the Oauth authentication (see screenshots 01 to 04 - I uploaded the configuration and all the steps of authentication).

I searched the internet for more then 3 days, but the only thing that I have found about this problem is this: https://bugzilla.mozilla.org/show_bug.cgi?id=1697805

In our Entra ID, we see in the sign-in logs, what excactly is happening with the conditional access (screenshots 05 to 07)

We use the newest client versions of thunderbird.

Can you please help me on this? We realy want to continue to use Thunderbird!

Kind Regards Ioannis Kyriakidis