With Thunderbird 78 the adressbookdata is stored as sqlite database and is no longer connectable.
Database and is no longer connectable.
Database should be connectable
User Profile Reset: No
It is possible to access the database with ODBC. With the address data source wizard I can select the address book as a source, but the field assignments do not match.
*** This bug has been marked as a duplicate of bug 138715 ***