If you have troubles since the update to WordPress 4.5 please read this post before opening a new thread.
For category archives the <?php echo term_description(); ?> in the archive.php file displays the excerpt
How can I get the custom post type descriptions to display on archive pages.
Thank you for your help!
You can read more about that function here: http://codex.wordpress.org/Function_Reference/term_description
For general WordPress questions your best source is the WordPress Codex or WordPress forums.
The topic ‘Description excerpt in custom post types’ is closed to new replies.