How to Enable WordPress MultiSite
Step 1) Confirm that your WordPress install can use Pretty Permalinks
Step 2) Open the directory WordPress is installed in and locate config.php
Step 3) Open config.php in a text editor and locate the line that reads /* That’s all, stop editing! Happy blogging. */
Step 4) Above this line, add define( ‘WP_ALLOW_MULTISITE’, true ); as shown below.
/** * For developers: WordPress debugging mode. * * Change this to true to enable the display of notices during development. * It is strongly recommended that plugin and theme developers use WP_DEBUG * in their development environments. */ define('WP_DEBUG', false); define('FS_METHOD', 'direct'); define( 'WP_ALLOW_MULTISITE', true ); /* That's all, stop editing! Happy blogging. */
Step 5) Save config.php, log in to the Dashboard, head to Tools » Network Setup, and start building your network.