diff --git a/app/models/wds_server.rb b/app/models/wds_server.rb
index cc96cec171672f97ada07ab76b46ab0b161c71c0..5abf7934bf5bb15b8077159eb6fda24530accbe5 100644
--- a/app/models/wds_server.rb
+++ b/app/models/wds_server.rb
@@ -44,7 +44,7 @@ class WdsServer < ApplicationRecord
   end
 
   def clients
-    objects = connection.run_wql('SELECT * FROM MSFT_WdsClient')[:msft_wdsclient]
+    objects = connection.run_wql('SELECT * FROM MSFT_WdsClient')[:msft_wdsclient] rescue nil
     objects = nil if objects.empty?
     objects ||= begin
       data = connection.shell(:powershell) do |s|