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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

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.

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 was able to send emails till July 14. After that day it's been impossible to send or reply to messages from my Outlook account (I receive emails though). I have made no changes to Thunderbird's configuration since then. Basically it's the Oauth2 authentication that fails. I briefly see a browser page for authentication, wait, wait, wait and then the mail is not sent and I get an error message related to servers timeout (attached). Sorry, my interface is in Italian, but anyway the message is something like: "Unable to send email because of a timeout on the connection to the out server (SMTP) smtp.office365.com. Try again." Is this a known bug? Any ideas? It's quite annoying to use the browser interface to send messages while I am able to receive them in Thunderbird :) Thank you in advance, guys!

As of version 115.0 for 64bit, I am unable to send emails to Outlook.com. An error occurs saying:

Send Message Error Sending of the message failed. The message could not be sent because the connection to the Outgoing server (SMTP) smtp.office365.com timed out. Try again.

There are no issues sending emails to Outlook.com using a different mail client.

Server: smtp.office365.com Port: 587 Connection: STARTTLS Authentication: OAuth2

A browser looking window opens up with a long URL in it (https://login.microsoftonline.com/common/oauth2/v2.0/authorize?response_type=code&client_id=xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx&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=xxxxxxxx%40hotmail.com) the windows is just blank and the dialog box for sending opens. The browser window shuts and the sending dialog box just sits there.

It ends up timing out saying it can't connect to the smtp server. I cannot send any e-mails at all. Please help or advise. Thank you!

Using IMAP to outlook.office365.com and I've stopped getting new mail. I can send mail but not receive. It just times out after a couple of minutes. Any help is appreciated. Settings match microsoft's server names etc. Steve

Right then, about a week ago Thunderbird updated from 115.2.2 to 115.2.3.

I use TB to manage my Gmail, Hotmail and business emails. Has worked well, until this new update.

I began immediately receiving a pop-up regarding my Hotmail account. Sometimes the pop-up flashes for a few seconds, other times it stays on the screen.

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=XXXX%40hotmail.com

• The XXXX is my email name removed.

The pop-up is mostly blank except for a text box at the very top with a long string of characters. Above that it states, 'Enter credentials for XXXX@hotmail.com at Outlook.Office365.com'. I can't figure out if it wants me to enter the string of characters somewhere on Outlook or if I am supposed to copy something from Outlook and paste it into the text box. Moreover, I cannot seem to find anything online to assist.

The problem is emails from Outlook are not downloading to TB. My last downloaded email was on 11.09.23 and there are new messages in my Outlook.

Ideas?

I installed Thunderbird 115.0.1 on Windows 11. I configured it for two accounts. One was a custom domain managed by Google, the second an Outlook account with my Office365 subscription.

Both receive mail fine. Neither would send mail. Investigating further I found that Thunderbird never got a firewall exception. I added the exception and now the Google account sends and receives fine. Outlook will still not send.

I've removed and re-added the Outlook account a couple of times now. No joy. I have found a lot of conflicting information on SMTP server settings but currently have the queried (auto configured) smtp.office365.com server on port 587 with my account credentials for login, connection security of 'STARTTLS' and authentication method of 'normal password'.

I've tried a couple of other email clients and they work out of the box. Any help would be appreciated.

-T

Hi there! I am using Thunderbird with an Outlook e-mail account. Due to the slowness and cumbersomeness of the syncing with the Outlook IMAP server I have deleted my IMAP account and created a POP3 account. Now all is well except for one thing: I have two Drafts folders. One of them is named Drafts - Local Folders, the other Drafts - OUTLOOK - Local Folders. They are both sub-folders of my Drafts folders. I am almost certain that the second one is a leftover from my deleted IMAP account. I have found some discussions and “solutions” of this issue online but none of them seem to fit my situation, and the instructions in them do not reflect what happens on my screen. Any assistance you may care to provide will be very much appreciated.

I'm a *long-time* TB user and have recently upgraded to 115.0 (BuildID: 20230711125218) on Linux (Kubuntu 22.04.2 LTS). I have multiple accounts configured to use the unified folders inbox. When in that unified inbox, if I delete an email, it stays in the message list instead of disappearing, although the focus changes (the message entry line was highlighted in blue background with white text, and is now in black text on a gray background). The message pane shows the next message as it should. If i click on the message list entry line for the deleted email, nothing happens in the message pane (it still shows the next email), although the focus does come back to the message list entry line. This does not appear to happen when I am in the inboxes of my individual email accounts, but only happens in the unified folder. When I return to the unified folder inbox from the individual account inbox, the deleted message is gone. Thanks for any help.

Thunderbird stopped communicating with homtail after upgrading to v 115.0 I can send emails using smtp-mail.outlook.com but it fails to retrieve messages from outlook.office365.com There's no error message, it simply fails to connect. (A pop-up window may appear for a few seconds, then it closes, with no new messages downloaded and no errors shown) I'm using the POP setting. Tried to recreate the account as IMAP - it just shows "checking password", would not proceed any further. (No error message, no timeouts. I tried to enter incorrect password on purpose - still no error message, apparently they don't even connect.) Disabling firewall doesn't help. EVERYTHING WORKED FINE BEFORE THE UPGRADE! PLEASE BRING BACK THE WAY IT WAS!!!

I have to use MSN now for my email server since your software no longer works!!! I can't send anything through your software now that you "upgraded" your TB software without my permission. Not sure why, but MSN is now saying that Outlook won't work with TB. So, good luck with that.

While away from my computer for a few days, Thunderbird stopped retrieving new emails. I noticed this when I returned. I'm using imap to download from the server. Logging in to the server via browser shows that there indeed new emails. Quitting Thunderbird and restarting results in showing old emails and a spinner (slider?) on the Inbox tab that never stops. I have not changed configuration recently (I was away when this started). I followed a suggestion to delete cert9.db, key4.db, and logins.json. Doing this and restarting changed nothing. My understanding is that this should have deleted my server password information, but I was not prompted for a password on restart. I have uploaded a snapshot of the "Troubleshooting information" tab to pastebin:

https://pastebin.com/fsB64yiu

I have connected my wifes outlook acc. and my Gmail acc. without issue, one on each of the user profiles, but with the 3rd my Outlook acc, I keep getting the "Unable to log in at server..." error. The Name/email/password are all correct. I have tried connecting my 3rd email account (+New/Existing Mail Account) as the 2nd account on different profiles but I get the same error trying to connect my Outlook acc.. I have verified that Thunderbird is configured to accept cookies. Is there some issue with having 2 outlook accounts linked to the same instance of Thunderbird?? (I hope not!! - that would be a complete deal-breaker!) Is there anything else I can try? Many thanks