Install and use https://addons.thunderbird.net/en-US/thunderbird/addon/account-check/

Tell us whether it helps.

Hi Wayne, Thank you very much for your response, comments noted and actioned. Unfortunately, the Add On didn't work. Dialogue message returned as mail server for [email protected] user "Authenticated but not Connected" So I am still not able to receive email or send via Thunderbird. Any other thoughts on options to resolve would be much appreciated.

This problem I believe has been brought about due to further changes made to Microsoft server. It would seem that they are slowly migrating users over to new IMAP server settings, with a view to getting everybody switched over by 31-12-2024, at the same time they no longer appear to be supporting third party apps such as Thunderbird. No doubt in an attempt to try and persuade people to use their own new Microsoft Outlook App. Any further help or assistance that you are able to provide would be much appreciated.

You need to use the settings that Microsoft state.

Lets start off by you posting info so we know the current status.

In Thunderbird Help > Troubleshooting Information Scroll down to 'Mail and News Accounts' Copy all the data and paste it into this forum question.

AS a heads up Microsoft/outlook/hotmail accounts work perfectly ok in Thunderbird providing you use the correct settings. It's not just server settings Authentication Method that now uses oauth, you also need to check the primary email address is correct.

In Microsoft account - logon to account via a browser. you need to make sure the primary email address is the same one used for the SMTP in Thunderbird otherwise it will not allow sending.

Hi there, thank you for your response. Thunderbirds automatically detected the server settings for my Microsoft email account upon installation, and these have been copy/pasted from Thunderbird troubleshooting section "Mail & New Accounts" for your information.

Mail and News Accounts ID Incoming server Outgoing servers Name Connection security Authentication method Name Connection security Authentication method Default? account2 (none) Local Folders None Normal password account5 (imap) outlook.office365.com:993 SSL/TLS OAuth2 smtp.office365.com:587 STARTTLS OAuth2 true

The above table hasn't reproduced very well but I hope you can make sense of it. Not sure what account2 refers to but the correct server settings appear to be listed under account5 , (why account5 I don't know ??? ).

Comments noted with regard to Microsoft Account and will get back to you more fully on this shortly, but other devices using outlook app for mail, (smart phone, laptop, tablet etc), appear to work OK using the above settings.

Hope this helps.

Many thanks for your help and assistance.

re :donations made at intervals to Monzilla

Please note there is a difference between donating to Mozilla and to Thunderbird. This is for Thunderbird : https://www.thunderbird.net/en-US/donate/ You can always get the link via Thunderbird - eg: Help > About Thunderbird It has a text link 'Make a donation' - click on it to get correct website.

re :why account5 I don't know ??? ) You previously created mail accounts and then deleted them. Account 2 is for the default 'Local Folders' account.

re account5 (imap) outlook.office365.com:993 SSL/TLS OAuth2 smtp.office365.com:587 STARTTLS OAuth2 true

All of that seems correct - I was expecting more than one account because you mentioned btconnect and hotmail.

Also check you have this set up:

• Settings > Privacy & Security
• CHECK “Accept cookies from sites”
• Accept third-party cookies: ALWAYS
• Keep until: THEY EXPIRE

IF account 5 is for the hotmail email addess. When you logon to microsoft account, it must have the same password as when you logon to the hotmail webmail account and in microsoft account the hotmail email address needs to be the primary address.

btconnect was the BT Business account which only offered pop. I believe it got moved over to microsoft office servers. Is account 5 set up for the btconnect address and you do not have anything set up for the hotmail account ?

Are you aware that you can also do this: Access https://outlook.office365.com/mail/ to login to btconnect.com details and then go to settings to divert emails to another email address - then divert them to hotmail account. In Thunderbird set up for the hotmail account.