WP_Query multiple value not working

This is waaaay after the fact, but maybe it’ll help someone else. You’re looking for an IN comparison here – where the value is IN a group of values.

Here’s what it’d look like:

$args['meta_query'][] = [
    'key' => 'antivirus_antivirus_featured_scaning',
    'value' => ['scheduled_scan','anti_spyware','anti_worm'],
    'compare' => 'IN'
];

Read more about it here: https://developer.wordpress.org/reference/classes/wp_query/#custom-field-post-meta-parameters =]