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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.

Hi - I have TB running on Ubuntu 22.04, accessing a 365 mailbox (using a company tenant account with our own email domain name). As Microsoft now enforce OAuth2, I have changed the security settings accordingly - but whenever TB tries to access the mailbox, the OAuth2 dialog which appears is as shown in the attached screenshot (email address edited), with labels and buttons missing. If I type the password into the dialog, I see the usual star characters appear as I type - but when I press <Enter> nothing happens. So I'm unable to connect to the mailbox. I have the same mailbox set up in TB on another Ubuntu machine (20.04), on the same LAN, and it works fine - the authentication dialog appears with the buttons and text, and allows me to connect to the mailbox. (TB is authorised as a mail client in our tenant account and for my mailbox.) I have removed and re-added the mail account, using all the recommended 365 settings (which are the same on the other, working machine), with the same result - the authentication dialog is missing text and buttons as in the screenshot, and does nothing. Cookies are enabled in TB. I've looked around for any similar reports and can't find anything - does anyone have any ideas? Thanks Nik

thunderbird all of a sudden after many years now unsubscribes me from folders each time it launches

this only does this to my microsoft account and I can re-subscribe but I will have to use another product before I re-subscribe each time I launch. only trash and inbox remain.

your default search on forums does not answer this so don't bother with a link unless it address this specific issue. I am not here to fix your product nor search for fixes with your products issue.

do you know how to resolve this issue?