I am using Thunderbird version 128.14.0esr (64-bit) on a Linux system to access email via IMAP/SMTP and it works just fine. Since Thunderbird doesn't seem to support Exchange calendars (as also per https://support.mozilla.org/en-US/kb/microsoft-oauth-authentication-and-thunderbird-202) I would like to integrate Nextcloud calendars. I have followed the official Nextcloud guide for Thunderbird calendar integration, but it is not working. I suspect it is due to the federation, since Thunderbird "Add a calendar" return me a "You credentials have not been accepted". My question is: does Thunderbird’s "Add a calendar" feature support in some way calendar access with OpenID Connect or OAuth2 federation authentication methods? (or there is a way to configure Thunderbird to do so with calendars?)