Fatal error or white screen when activating

Activation produces a fatal error, a blank white screen, or a memory-limit message. The usual cause is a PHP memory limit below 256 MB (or an environment under the minimums).

Fix

1. Check WooCommerce → Status → Server environment for PHP Memory Limit and PHP Version.
2. Confirm you meet the Requirements.
3. Raise the memory limit (or ask your host). If you edit wp-config.php:

   define( 'WP_MEMORY_LIMIT', '256M' );
   
4. Retry activation.

Related: Requirements · Before you open a ticket