![](https://www.uv.mx/personal/gvera/files/2010/11/sso-150x150.jpg)
This was actually intented for a Multi-Network-Multi-Site Word Press installation. But I can work with single separated Word Press installations. You only require that the users have the same username and password among sites. Single Sign-On between different WP installations Find this part in your root or parent wp-config.php (/).