Recently (I believe it’s been since the WP 4.0 upgrade), my Jetpack Publicize settings got deactivated and I had to ‘reauthorize my connections’.
What I found is that after the WordPress 4.0 upgrade, you need to follow these steps to fix the Jetpack As always, make a complete backup of your site and database before any changes. If you have any issues beyond that, try adding your thoughts to this thread on the WordPress.org support page. Hopefully this helps you fix the Jetpack [auth_failed] Authorization header was malformed error. Originally posted 2014-11-12 10:15:16.
This worked! Thanks!