I didn't upgrade to Ubuntu 20.10 at all Olivier, I'm still on Ubuntu Mate 20.04.1. Maybe it came with an update? Thunderbird already was a longer time just in English. But as far I know the problem started 27th October, yes indeed.
Maybe also nice to know, when I didn't close the window displaying the error, I got notification of received new mails. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1901829 Title: thunderbird fails to open, xml parse error To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/thunderbird/+bug/1901829/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
