Title: Plugin not working on WordPress 4.0
Last modified: August 22, 2016

---

# Plugin not working on WordPress 4.0

 *  [pirulee](https://wordpress.org/support/users/pirulee/)
 * (@pirulee)
 * [11 years, 8 months ago](https://wordpress.org/support/topic/plugin-not-working-on-wordpress-40-41/)
 * I recently updated my client’s development and production sites to wordpress 
   4.0 and found out that YOAST SEO plugin stopped working.
 * The plugin’s form is not displaying at all in the posts’ and pages’ metaboxes,
   although the header/title does.
 * A rectangular box appears titled “WordPress SEO by Yoast” without the form and
   functionality.
 * I turned on debug mode and notifications on both sites, but nothing pumps up 
   either in the site or in the error log, which means I myself cannot track the
   cause of the issue.
 * This happened after wordpress was updated, please advise.
 * [https://wordpress.org/plugins/wordpress-seo/](https://wordpress.org/plugins/wordpress-seo/)

The topic ‘Plugin not working on WordPress 4.0’ is closed to new replies.

 * ![](https://ps.w.org/wordpress-seo/assets/icon-256x256.gif?rev=3419908)
 * [Yoast SEO - Advanced SEO with real-time guidance and built-in AI](https://wordpress.org/plugins/wordpress-seo/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/wordpress-seo/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/wordpress-seo/)
 * [Active Topics](https://wordpress.org/support/plugin/wordpress-seo/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/wordpress-seo/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/wordpress-seo/reviews/)

## Tags

 * [SEO NOT WORKING](https://wordpress.org/support/topic-tag/seo-not-working/)
 * [Yoast not working](https://wordpress.org/support/topic-tag/yoast-not-working/)

 * 0 replies
 * 1 participant
 * Last reply from: [pirulee](https://wordpress.org/support/users/pirulee/)
 * Last activity: [11 years, 8 months ago](https://wordpress.org/support/topic/plugin-not-working-on-wordpress-40-41/)
 * Status: not resolved