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 c81d092efe..01542a9b6b 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
@@ -701,6 +701,11 @@ class WP_REST_Users_Controller extends WP_REST_Controller {
 	 * @return WP_REST_Response|WP_Error Response object on success, or WP_Error object on failure.
 	 */
 	public function delete_item( $request ) {
+		// We don't support delete requests in multisite.
+		if ( is_multisite() ) {
+			return new WP_Error( 'rest_cannot_delete', __( 'The user cannot be deleted.' ), array( 'status' => 501 ) );
+		}
+
 		$id       = (int) $request['id'];
 		$reassign = false === $request['reassign'] ? null : absint( $request['reassign'] );
 		$force    = isset( $request['force'] ) ? (bool) $request['force'] : false;
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 00b67c159e..2e69856fab 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.8-alpha-39436';
+$wp_version = '4.8-alpha-39438';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.