Thunderbird Community Forum

I looked it all up:

Incoming (IMAP) outlook.office365.com 993 SSL/TLS OAuth2

Outgoing (SMTP) smtp-mail.outlook.com 587 STARTTLS OAuth2

Use IMAP not POP

Use OAuth2 not password

Username is my msn email address (username@msn.com)

I have spent all evening and all night trying to set this up and it has failed every single time. I used AI to double check all the info setting. I found nothing on Mozilla or Mozilla Thunderbird to help.

It should work and it is not working. There is no other information I have found that would contribute to solving the problem.

Hello, I'm currently having a problem with Thunderbird version 15.9. I can no longer sign in to my Google-Account after I set new passwords and entered them in Thunderbird. Several attempts were unsuccessful. I then deleted all entries related to my Google account. Adding the existing account again failed. I received two error messages. Error message 1: “Waiting for authorization during sign-in". Error message 2: “The inbox server is already in use.” An other E-Mail Account runs perfect. I urgently need help.

After this last "update" that went backwards in usefulness I can not find folders that I had with a lot of info I want and need, both business and personal. IF this can not be fixed do you have a recommendation for a better free email client system? I have lost needed information.

Your how to find what version I'm using is garbage, try to either make the instructions complete with a step by step for what option to go to or make it an auto fill when coming to this page. I had to guess.

Thank You Mike Gert [redacted]@gmail.com

Is it possible to install Tbird on different filesystem separate form the OS without having symlinks coming from the OS area i.e installing it like a portable?

I checked out a couple of Thunderbird-*.tar.xz packages from the [[Mozzilla Archive.|https://archive.mozilla.org/pub/thunderbird/releases/]] Mozzilla archive. Unpacked them in the target area and discovered that the permissions of the executables were not suitable, not set to execute it was all read/write.

The official only gives you the option of the default, $HOME and no where else. https://support.mozilla.org/en-US/kb/installing-thunderbird-linux ' "Why do this: Putting Tbird and its profile together in a separate area allows me to keep a long term backup of an account before I delete it. It becomes a trivial matter of restoring and access the contents without relying upon an existing tbird installation. This is trivial in Windows with a portable Tbird, it only adds about 350MB to the backup.

It's some weeks since I cannot use TB properly due to some authentication issues with some of my gmail accounts. I do receive the incoming emails but I'm no more able to send. When I try, the send window hangs with no progress and what I need to do is close the current email which I'm not even able to save as draft, restart TB and then wait for the software to open the browser and say that the application is authorized. I've already done this several time per each account. I've tried to delete the saved password and token but it does not help. Another gmail account which is also configured on TB but almost never used to send emails is working perfectly and it has 3 entries in the Password management section of the setting window: two of those seem to be the same and contain the current password while the other entry has the token.

Using TB 153.6.0esr (64 bit) Badge per Thunderbird MeadowThunderbird for Linux Mintmint-001 - 1.0 on Linux Mint 22.3, Kernel: Linux 6.8.0-149-generic, Architecture: x86-64.

The issue has been noted also before the recent update, when running TB 153.4.0esr (64 bit) always on Linux Mint.

I've double checked the account/server settings and those seem to be exactly the same as two years ago when I configured my several Gmail accounts on TB on this laptop. I've also tried to add an exception on the cookies settings, but the problem persists. Actually, I'm obliged to restart TB each time the issue occurs and then it works without any setting/configuration change. This lets me think that all the settings are ok otherwise I would never be able to send/receive any email even after restarting TB.

My email provider - part of Claranet- has recently updated its security certificate which is now not accepted by Thunderbird or Google mail on Android devices. I can access mail by removing SSL/TSL but not send, and thar leaves me with no security so lots of spam getting through. Claranet say this must be down to these platforms ( hope I have the right terminology). Can anyone advise?

Hi,

I'm a bit helpless. Everything was working just fine with Thunderbird, but now it seems like my Outlook account just doesn't connect anymore. I was unable to send any message anymore yesterday. Today, I tried to disconnect and reconnect it, and now, when I try to set it up back again, it just takes forever as you can see on the image.

How come ? What can I do ?

Thanks,

I have tried to fix 1 of 4 Thunderbird email accounts not receiving or sending emails. Been lagging for a few days although other 3 accounts working fine. Followed a YouTube, checked settings, firewalls, virus settings etc. Then on 'Inbox' selected 'New' then 'Properties' then 'Ok' and all my inbox and deleted emails have disappeared! Please help!

For some time Thunderbird has not been displaying email I finally got an error message:

"This message requires formatting features that your email client does not support. To read today's newsletter, use this link: <>"

Nothing was in the suggested "use this link"

What formatting feature am I missing? How did I lose it? I can I discover it and include it again? Is this a Firefox problem or my Windows 11 problem?

I did remover Firefox and then reinstalled it but that didn't change anything. -- Robert Kastigar 5101 N Central Park Ave Chicago IL 60625 773 588 9634 Kastigar@gmail.com

I have just set up a Thunderbird account and linked it to my Google business account which I am going to cancel and close.

can I still view old emails (for the google account I am going to close) in Thunderbird after my google business account has been cancelled

I have recently changed to thunderbird for email because I need a common email client for both Apple and Linux systems mainly because there was no other reasonable option available. That being said it appears that the autocomplete function for addressing a recipient only works if I use an "Company or Network Directory"or a "Directory Server" neither of which I use.

As you can see by the attached screenshot, there are only two options available (Company or Network Directory) or (Directory Server). Is there a way for the autocomplete to use the local address book either in Thunderbird of on the a separate app on MAC. And before someone tells me to press F9 for the address book to appear in the side bar and then search for the desired email address --- that is far to cumbersome and way too many clicks.

Thanks

I exported a Google.com calendar from Thunderbird Calendar as an .ICS file then used the Thunderbird import in the tools menu to import the .ics file into my gmail.co.uk calendar. everything appears as expexted until I select continue the progress bar appears and it remains at 0% so appears to have hung. Any suggestions

I can't add my personal @hotmail.com account to Thunderbird. Every attempt ends with "Authentication error – Unable to log in at server. Probably wrong configuration, username or password." All my other accounts (Gmail and several Microsoft 365 business accounts using outlook.office365.com + OAuth2) work fine in the same profile.

Setup

• Thunderbird 160.0 (64-bit) on Windows (problem also happened on 159.0)
• Settings auto-detected by the Account Hub: IMAP outlook.office365.com:993 SSL/TLS OAuth2; SMTP smtp-mail.outlook.com:587 STARTTLS OAuth2
• POP3 (outlook.office365.com:995 SSL/TLS OAuth2) fails in exactly the same way

What happens

• The Microsoft sign-in opens in my default browser, I sign in with the correct account (2FA), and I get the "You're all set" page.
• With mailnews.oauth.loglevel = All, the Error Console shows a successful token response from login.microsoftonline.com with scopes IMAP.AccessAsUser.All, POP.AccessAsUser.All and SMTP.Send, and "Creating new login for ...@hotmail.com". Microsoft also emails me "New app(s) connected to your account".
• Immediately after that, account setup fails with "Unable to log in at server". The console shows nothing more specific.

What I already tried

• Removed and re-added the account several times; cleared the saved OAuth logins for this address
• Cookies are allowed; mailnews.oauth.useExternalBrowser is back to true (setting it to false made the redirect go to https://127.0.0.1 and fail)
• In Outlook.com: IMAP is enabled (toggled off/on and saved). The address is the primary alias of the Microsoft account. Two-step verification is on. Recent activity shows no blocked or unusual sign-ins, even right after a failed attempt.
• Webmail works normally.
• Microsoft support says nothing is blocked on their side and sent me here.

Is there anything else I can check, or a way to see the actual IMAP server response to find out why it rejects the token?

Today, November 12 2026 I lost all access to Microsoft email accounts (through TB) and calendars (through TbSync). Nothing, neither business or personal email accounts, will send or receive email as of this moment. I have checked behavior of software in troubleshoot mode and nothing changes. I have not located an error log in TB. My only indication of a problem is that the windows error console alerts an error "server graph.microsoft.com responded with an error" No other information. It would be nice if the error logs were easily available in TB.

Is there a general conflict between MS graph server and TB??

Received messages show as tabs - rather than listings and are often repeated .. This only happens in Windows version not in Android (which perforems and displays perfectly - see attached upploaded image.

Hello, I am having trouble syncing my calendar and address book between my phone (Samsung S23) and Thunderbird on my computer. It seems that the 'My Phone Explorer' add-on does not support the latest version of Thunderbird (version 160). Please help me. Best regards, Leif Abrahamson leab9@yahoo.se

I use Thunderbird on my iMac (10.12.6) to access 6 gmail accounts to download them to my computer. Suddenly at about 1500 hours GMT it just stopped working. Please help. Kind regards Paul Partridge