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I got an email from Microsoft saying my Live.com or Outlook.com email accounts won't be supported in Thunderbird UNLESS I change the settings to OAuth2 in incoming and outgoing server settings.

I even REMOVED the email account and re-added it making sure it was OAuth2.

But for my live.com & outlook.com email accounts I continually get prompts for passwords from Thunderbird. Sometimes I can't even click the RED X at the upper right to shut the prompt down. I just happens over and over until I give it what it wants.

I am tempted to shut down all Microsoft email accounts and switch to Gmail.

I have Thunderbird version 115.12.2 (64-bit) I used Windows 11 23H2 build 22631.3810 Windows Feature Experience Pack 1000.22700.1020.0

Any idea how to stop these prompts?

I like Thunderbird much more than any other email program I have ever used, and would like to keep it

Hi there - been using Thunderbird for donkeys (since it was Eudora!). A few weeks back I started to get messages from Microsoft that I needed to change security settings as they were no longer supported on 3rd party email handlers like Thunderbird. So I re-created the three accounts I had there and it seemed to be OK, though SMTP did not have the OAUTH2 option available ... and when I tried to use the new SMTPs they wouldn't work. So I reverted to the old settings there and it worked again.

But this morning, with the big update to Thunderbird Nebula, I can no longer send emails from the MS accounts. My Gmail one is still OK ... but whatever I try, I cannot get the MS ones to send emails - I get a failure connecting.

Login to server smtp-mail.outlook.com with username xxxxx@hotmail.com failed.

I checked on MS and the details shown there:

SMTP server name smtp-mail.outlook.com SMTP port 587 SMTP encryption STARTTLS Authentication Method OAuth2/Modern Auth

Are what I have (I did have a different SMTP Server name came up - smtp.office365.com - but that doesn't work either)

So ... where is the issue? Is this a bug in the new Thunderbird setup? Something else? I don't know where to go ...

David

I use SMTP settings

Description: smtp.office365.com Server Name: smtp.office365.com Port: 587 User Name: mypersonalaccout@hotmail.com Authentication method: OAuth2 Connection Security: STARTTLS

but TB is incapable of sending email. Either I got dialog https://software9119.technology/__other/tb/dialog.png or error https://software9119.technology/__other/tb/timed-out.png.

I tried cleaning cache and made some re+/search with no avail. There seems to exist some Authenticated SMTP but this is only available on Exchange 365 while this is my personal Outlook.com account.

Same question had Bill Swartout at 1/9/24, 2:30 PM with no answer, https://support.mozilla.org/en-US/questions/1423404#answer-1629472.

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 just noticed that the 'Sent Items" folder on one of my accounts in Thunderbird has gone missing. The folder and all messages are still on the outlook.office365.com server when I go to the web mail page. How do I force Thunderbird to recreate the folder and re-download messages from the server?

For what it's worth, my other Office 365 based account in Thunderbird is just fine. No issues.

Thunderbird 102.4.1 on Windows 10.

Thanks.

New Thunderbird Version 115.0 Every time Thunderbird checks for new messages, there is a popup relating to "login to my hotmail account". There is no prompt for an actual password as it is saved in the profile settings. The popup stays on screen for 3 seconds and is very annoying. This never happened with any of the previous versions. It also happens when I click "Get Messages", and it doesn't matter which one of my many inboxes has the focus. Image attached.

Dear support,

I am an Azure AD admin and recently we have been receiving ticket that some users cannot connect with they Thunderbird clients to our Exchange Online mailboxes.

Because MS turn off the basic authentication I had to created/register an Azure app with the normal API permissions for POP,IMAP,offline_access and SMTP. After that in 2023 January I also had to delete and register again the app because of a major change.

Everything fine until now, where I did try it also out and the account is not connecting to the exchange online server.

I followed you article precisely and did all the steps but no success: https://support.mozilla.org/en-US/kb/microsoft-oauth-authentication-and-thunderbird-202

1 - Delete the app and re-registered via the Link and as admin I have granted it to the entire company 2 - I did make a clean install of Thunderbird and deleted all profiles and created a new one.

     Also via Config Editor removed all 4 entries with *auth2.scope at the end.

I've spent 5 hours trying to make it work.

Is the connection to M365 still supported ?

best regards, Mihai

I have tried to change the account settings for my hotmail emails, but for STMP settings Oauth2 was not listed as an available option. Please advise. I am able to access hotmail emails on an Android tablet, but need to reset Thunderbird on my laptop.