Thunderbird Community Forum

Hello,

I am using the latest stable release of Thunderbird client on Windows 11 and just today it's been asking me multiple times for a password to my Outlook account. I have kept adding a one time app password through the official Microsoft website under account management but it's been asking a few times that it needs a password.

Do you know if there's been any outages to the Microsoft servers or what this issue could be related to? Is there a way I can send any logs directly to you that might help find the issue?

Thank you for your time.

I want to move Thunderbird local folders to an external drive (Seagate). I am working on a desktop computer with Windows 10. Where are the Thunderbird local folders? The files don't display anywhere in Windows explorer. I am able to transfer all other files such as jpg. and pdf. files from the desk top computer to the external drive by dragging and dropping, but I can't locate the Thunderbird local email files so as to be able to drag and drop.

I just completed changing the storage location for Thunderbird email messages, from AppData/Roaming to a new Thunderbird folder under Documents. This was to ensure that my computer quick-backup utility would save emails. I followed Mozilla instructions and all went well, everything seems still to work just fine, except that one POP email account shows nothing in the appropriate Thunderbird Inbox now. Sent messages show up, and new incoming messages to that account go into the Inbox and show, but all the old ones from before the location change just don't populate the Inbox listing area. The Inbox file at the new location has messages in it, I can see and read them with Notepad, but there's no corresponding Inbox message list for that one account. What could have gone wrong, and is it possible to somehow 'activate' the old messages so they show, or move them again from the original AppData/Roaming location to the new one? Thanks!

Lately I'm having trouble with my connection with outlook. I use a free outlook email address. Sometimes (not always) when starting Thunderbird, I get the "user authenticated but not connected" warning. After a while it's working again.

I have tried several settings but can't figure out what solves this issue.

I'm using port 993 / SSL/TLS and authentication method is set to normal password.

Most of the times this works.

When I switch to OAuth2, I get the Microsoft screen to login to my work / school account which I do not have.

I've search the web to find a solution for this but I can't find it. Hopefully someone can help me out because it drives me "nuts" ;)

Hi. I have used Thunderbird for a long time. I have never had a problem accessing my hotmail account for emails. Overnight Thunderbird now posts error message boxes when trying to login to the hotmail server. It reports incorrect username or password. Neither has been changed by me and comparison with Eset Password Manager shows them to be correct. I can login to Outlook online using the same login credentials an get my emails that way. I have also changed my Outlook hotmail password while logged in in my browser and updated everything on the PC to match of course.

I have massaged the server Settings for hotmail and have had the system working again, for a while. Twice I have reset the settings to a different server and back again and that seems to clear the problem for a while. Then the error messages switch on again consistently. At this moment using "File" -> "Get New Messages For:" -> "Hotmail" works without any problem and the automatic scheduled checking reports "No messages to download" so it appears to be working. But that is after just coming back to my PC to find a string of failed attempts, each with its own error box, which have appeared since I last "fixed" the problem and assumed it was now fine.

My server settings are Type: POP; Name: pop-mail.outlook.com; Port: 995; Username: same as for browser access (which works); Password: As in Thunderbird's stored passwords matching Password Manager and working browser access.

In my paranoia I have even wondered if I am being locked out by Microsoft somehow. Can anyone suggest what is going on here?

I think I see a pattern here, but I really want to understand it:

• If I drag a folder from the synchronizing IMAP account to LOCAL FOLDERS, it is only copied but the originals all remain on the server.

• But if I drag messages from a synchronizing folder to a folder in LOCAL FOLDERS, they are moved and deleted from the server.

• Or anyway, whatever the server really does with deleted e-mails, this is the way it looks in Thunderbird.

Any other guidance about moving/copying/archiving? I really don't want to mess this up.

I had a functioning thunderbird, but do to my host provider I had to change some of the configuration (had (owl) suffix). This left 2 profiles. The new profile wouldn't work until I deleted the original. I did a save so I have all the files, now which ones need to be restored. ( a full file backup prior to adding new profile so all org profile files are available)

A profile directory displays all of the folders, 2 files for each folder a MSF and an MBX. Some also have a file type of File.

Which has to be copied, will the folders be created with the copy or do I need to create them in thunderbird first ?

Hi, I've received the email below from Microsoft today.

I have 15 email accounts linked to Thunderbird mail and use up to 5 of them daily. Sometimes 'instant' communications on one or more of my accounts can be important.

Will Thunderbird mail still function in the same way from 16th September?

I apologise if this question has been answered somewhere else. I searched but could not find it.

"The safety and security of your information is top priority for Microsoft. To help keep your account secure, Microsoft will no longer support the use of third-party email and calendar apps which ask you to sign in with only your Microsoft Account username and password. To keep you safe you will need to use a mail or calendar app which supports Microsoft’s modern authentication methods. If you do not act, your third-party email apps will no longer be able to access your Outlook.com, Hotmail or Live.com email address on September 16th.

What do you need to do?

If you are receiving this email, you are currently using an email or calendar app that uses a less secure authentication method to connect to your Outlook.com email account. You will need to upgrade your third-party mail and calendar app to a version which supports modern authentication methods.

Microsoft provides free versions of Outlook for your PC, Mac, iOS, and Android devices which can be easily downloaded and connect to your email account. Using an updated version of an Outlook application will ensure you are connecting in the most secure way.

How can you set up your Gmail, Apple Mail, or other third-party mail application?

Various non-Microsoft applications will have their own steps for connecting to your Outlook.com email account using modern authentication methods. See our help article - Modern Authentication Methods now needed to continue syncing Outlook Email in non-Microsoft email apps. However, you may need to contact the creators of those applications to provide you with instructions. In many cases, simply removing and re-adding your account with the latest version of that application will configure it to use modern authentication methods."

From the article "Microsoft OAuth Authentication and Thunderbird in 2024" there is a screenshot showing a OAuth2 option for the SMTP server setting with STARTTLS connection security. It does not appear for me. There are only the five options, as shown in the screenshot. How do enable the option to be available in the drop-down list or set it?

The available options are:

No Authentication Normal Password Encrypted Password Kerberos / GSSAPI NTLM

I am on Thunderbird version 115.12.1 (64-bit), Windows 11, version 23H2, build 22631.3737

I have 2 Thunderbird intallations and I want to keep the folder content synchronized, or at least export . The first option I thought of was export messages filters to import them in the other installation, so folders wil be filled in the same way. But ... I only see possibility of exporting the whole profile. (8Gb) In the profile I can't find files that are related to this issue. Is there anything for message filters, like the way you can ex/import mailadresses? And if not, how can I proceed best?

1 of my customers are experiencing ThunderBird not responding, very random when it does not respond, Windows 10 Pro 64 Bit I checked that Mozilla ThunderBird is running latest version (x64 en-US) Version 102.3.3 The fixes I have tried are running the setup exe file I have checked email settings are correct Check task manager to see if anything is overloaded such as RAM Memory Check AVG Firewall and allowed ThunderBird Adjusted Windows power management settings to high power plan

July 2024 - Thunderbird is demanding that I change my Hotmail password, after long trouble -free operation. It will not login. Why? (I have not changed the PW yet, hoping for a solution that will avoid the necessity.) I fear that it may be due to some fault in OAuth. Can anyone please provide any help to overcome this problem? Tom.

The inbox font in the Thunderbird email client on my Mac is super tiny, and it's very hard to read. I can't figure out how to make it larger. Is there a way to do this? I really like Thunderbird so far, but if I can't read it, I can't use it.

Thanks! Mark

For months I was experiencing the problem of "Thunderbird not responding" occasionally. It was a short duration issue (a few seconds to a minute). I reinstalled Thunderbird several times without success. I read almost every comment available online about this problem and I tried many ideas and recommendations I found without success. Most recently the problem became so serious that it was not a nuisance any longer. It was nearly impossble to work waiting for minutes to open an email or to continue typing while preparing a message and being interrupted by the problem I am describing. I ran Thunderbird in safe mode and determined that none of the add-ons is causing the problem. I turned the firewall OFF and determined that firewall was not causing the problem. I then decided to run Thunderbird in Offline mode and found that the program works normally. Then while in Offline mode I decided to download more messages and the program asked me if I wanted to switch to the Online mode. I said yes. New emails were downloaded and without going back to the Offline mode I was able to work normally without any occurrence of the "Thunderbird not responding" problem. I have been using this workaround for several days now. I download a number of eamails. I try working in Online mode and I cannot do it. I switch to Offline and work fine. I switch back to Online mode and I don't see the problem any longer for the whole day. Do you have any idea as to the origin of my proble? I am running Thunderbird 115.10.2 64 bit on Windows 11. I had the problem originally using Lenovo T490s and more recenlt Lenovo X1 Yoga

I am attempting to move Thunderbird to a new computer following the instructions from the website and it is not working.

The original computer is Windows 10 and has had Thunderbird installed for a long time and was recently updated to 102.14.0 (64 bit). The new computer is Windows 11 with a clean install of 102.14.0 (64 bit). When I copy the folders from the old computer to the new one and launch Thunderbird, it is not recognizing that the profile has been copied over, there are no email accounts, etc.

I did note that the folder structure is different - the old one was under Mozilla Thunderbird and the new one is just Thunderbird; the Profile folder on the old one is Profile and the new one is Profiles and some of the files are different.

Any ideas on how to successfully migrate this?

Hi, every now and then, the local folder of my Thunderbird account (C/users/'myuser'/AppData/Roaming/Thunderbird/Profiles) starts growing endlessly. At some point there is no space left in my PC and I have to remove thunderbird and re-configure it from the start. For instance, now it's 43.3 GB large (it can go up to > 150 GB), but the inbox and outbox folders are ca. 14 GB (checked from 'Folder properties' inside Thunderbird). It is apparent that there is something wrong and I am tired of this situation. Could you help me ? Thank you Lorenzo

In thunderbird 115,

I have clicked "hide message list header" and cannot find a way to show it again

how do you unhide it ?

https://support.mozilla.org/en-US/kb/getting-started-thunderbird-main-window-supernova#w_4-message-list-header

I have followed all instructions both thru gmail and Thunderbird. I have tried to use different email/gmail accounts and have triple checked all entries and settings are correct. Am 'normally' reasonably tech savvy but this one had got me. Error message: Unable to log in at server. Probably wrong configuration, username or password.

Please help...at head banging stage :(

It's not true! Clicking on the close thunderbird button in the error message does nothing, I've uninstalled, reinstalled rebooted. I've had this laptop 3 days, do I need to To go back to factory settings on this laptop.