Restoring missing Address Book in Thunderbird 140 menu bar 0 ▲ Neil's blog 1 hour ago · Tech · 0 comments For some reason, the Address Book tab/pane on Thunderbird’s menu bar had gone missing, and I struggled to find out how to get it back. So, for future me, what resolved it was: Ctrl + Shift + b No comments yet. Log in to reply on the Fediverse. Comments will appear here.