Automated Removal
- Go to the admin section of your WordPress site.
 - Select the Plugins menu item.
 - Select the Installed Plugins sub-menu.
 - Scroll down to the "WPSSO Update Manager" plugin (or use the Search field), and click its Deactivate link.
 - Scroll down to the "WPSSO Update Manager" plugin (or use the Search field), and click its Delete link.
 - Click on the Yes, Delete these files and data button.
 
Manual Removal
- Remove the wordpress/wp-content/plugins/wpsso-um/ folder from your website.