Thank you Luciano. Can you please share the output of the following command?
LANG=C stat /home/luciano/.thunderbird/y528qfof.default/extensions/langpack-*@thunderbird.mozilla.org.xpi Once you have captured the output and shared it here, can you confirm whether deleting those files (with the following command) resolves the issue? rm -f /home/luciano/.thunderbird/y528qfof.default/extensions/langpack-*@thunderbird.mozilla.org.xpi -- 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