Right, so the trigger for the bug appears to be upgrading from thunderbird 68.x to 78.y, as Joep did by enabling the ubuntu-mozilla- security PPA.
Note that that PPA is not recommended for general use, it is used for preparing and testing updates. This doesn't invalidate this problem though, which I haven't managed to reproduce in various testing scenarios yet. -- 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
