This solution was last tested on WordPress 4.1.1 in March 2015. This solution was tested on WordPress 3.1 running on IIS7 and IIS 7.5. It will work on WordPress 3.1.1, on 3.2.1, and on 3.5.1. This solution was just tested on WordPress 3.8.1 and works very well. This solution adds a new column to your admin user page, and makes it sortable (optional). Here are the steps. -01- Find wp-admin\includes\class-wp-users-list-table.php and make a backup copy of the file. Call it class-wp-users-list-tableORIG.php. -02- Open wp-admin\includes\class-wp-users-list-table.php in your favorite editor. -03- Find line function get_columns() { -04- Add a new line of code ‘user_registered’ => __(‘Date’), after…
