Step 1: Copy the code below & paste it to your 'wp-config.php' file your WordPress website directory
define('ALLOW_UNFILTERED_UPLOADS', true);
Step 2: Copy the code below & paste it to your theme's 'functions.php' file
function my_custom_mime_types( $mimes ) {
$mimes['csv'] = 'text/csv';
unset( $mimes['exe'] );
return $mimes;
}
add_filter( 'upload_mimes', 'my_custom_mime_types' );
