diff --git a/wp-includes/rest-api/endpoints/class-wp-rest-users-controller.php b/wp-includes/rest-api/endpoints/class-wp-rest-users-controller.php
index 802eb649c3..c762ed41d7 100644
--- a/wp-includes/rest-api/endpoints/class-wp-rest-users-controller.php
+++ b/wp-includes/rest-api/endpoints/class-wp-rest-users-controller.php
@@ -351,6 +351,10 @@ class WP_REST_Users_Controller extends WP_REST_Controller {
 			return $error;
 		}
 
+		if ( is_multisite() && ! is_user_member_of_blog( $user->ID ) ) {
+			return $error;
+		}
+
 		return $user;
 	}
 
@@ -639,10 +643,6 @@ class WP_REST_Users_Controller extends WP_REST_Controller {
 		/** This action is documented in wp-includes/rest-api/endpoints/class-wp-rest-users-controller.php */
 		do_action( 'rest_insert_user', $user, $request, false );
 
-		if ( is_multisite() && ! is_user_member_of_blog( $id ) ) {
-			add_user_to_blog( get_current_blog_id(), $id, '' );
-		}
-
 		if ( ! empty( $request['roles'] ) ) {
 			array_map( array( $user, 'add_role' ), $request['roles'] );
 		}
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 58d3ee09dc..e24e47d8f5 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.8-alpha-40105';
+$wp_version = '4.8-alpha-40106';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.