title: Umbraco Content Syncing Issue - Error refreshing a node in the distributed list
body: <p>Having followed the <a href="http://our.umbraco.org/Documentation/Installation/load-balancing" rel="nofollow">official docs</a> on how to set up load balancing for Umbraco on IIS i went for the recommended option of File Storage with File Replication.</p>
  
  <p>I set up the distributedCall element in config/umbracoSettings.config....</p>
  
  <pre><code>&lt;distributedCall enable="true"&gt;
      &lt;user&gt;0&lt;/user&gt;
      &lt;servers&gt;
          &lt;server&gt;ourserver-node1&lt;/server&gt;
          &lt;server&gt;ourserver-node2&lt;/server&gt;
      &lt;/servers&gt;
  &lt;/distributedCall&gt;
  </code></pre>
  
  <p>but whenever i publish content it fails, and i get the following in the logs...</p>
  
  <pre><code>2013-10-01 17:42:34,054 [12] INFO  Umbraco.Core.Publishing.PublishingStrategy - [Thread 23] Content 'testing page' with Id '1215' has been published.
  
  2013-10-01 17:42:34,101 [12] INFO  Umbraco.Core.Sync.DefaultServerMessenger - [Thread 23] Submitting calls to distributed servers
  
  2013-10-01 17:42:34,179 [12] ERROR Umbraco.Core.Sync.DefaultServerMessenger - [Thread 23] Error refreshing a node in the distributed list, URI attempted: http://ourserver-node1/umbraco/webservices/cacheRefresher.asmx
  
  System.Net.WebException: The request failed with HTTP status 401: Unauthorized.
  
     at System.Web.Services.Protocols.SoapHttpClientProtocol.ReadResponse(SoapClientMessage message, WebResponse response, Stream responseStream, Boolean asyncCall)
  
     at System.Web.Services.Protocols.SoapHttpClientProtocol.EndInvoke(IAsyncResult asyncResult)
  
     at Umbraco.Core.Sync.DefaultServerMessenger.PerformDistributedCall(IEnumerable`1 servers, ICacheRefresher refresher, MessageType dispatchType, IEnumerable`1 ids, Type idArrayType, String jsonPayload)
  </code></pre>
  
  <p>There are 2 nodes configured, and i get an entry for each.  We are using the same App Pool Identity for both servers.  </p>
  
  <p>The entire umbraco website is configured to use Windows Authentication, as its an intranet app that identifies article comments via their active directory account.</p>
  
  <p>If i remove windows authentication on the webservices directory and allow anonymous it causes the entire umbraco backend cms to fail (all calls to services within the webservices directory fail, such as the node content loader etc..)</p>
  
  <p>From the stack trace it would seem that the user cannot be authenticated.  </p>
  
  <p>I checked the machine key and it is the same for both.</p>
  
  <p>Why would i still getting a 401 unauthorised?</p>
  
  <p>I can hit the cacheRefresher.asmx via my browser, but it fails via fiddler with the same 401.  So i gather its using my windows creds when going via the browser.</p>