*** This bug is a duplicate of bug 1849542 *** https://bugs.launchpad.net/bugs/1849542
I do not think this is a duplicate. My global-messages-db.sqlite is fine, as all I did on Ubuntu 16.04 was downgrade thunderbird version. Download from https://launchpad.net/ubuntu/+source/thunderbird/1:60.9.1+build1-0ubuntu0.16.04.1/+build/18178755 and then sudo dpkg -i thunderbird_60.9.1+build1-0ubuntu0.16.04.1_amd64.deb thunderbird-gnome-support_60.9.1+build1-0ubuntu0.16.04.1_amd64.deb thunderbird-locale-de_60.9.1+build1-0ubuntu0.16.04.1_amd64.deb thunderbird-locale-en_60.9.1+build1-0ubuntu0.16.04.1_amd64.deb thunderbird-locale-en-us_60.9.1+build1-0ubuntu0.16.04.1_all.deb xul-ext- lightning_60.9.1+build1-0ubuntu0.16.04.1_amd64.deb so the reason is something else. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1859043 Title: thunderbird completely broken after upgrade To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/thunderbird/+bug/1859043/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs