title: The plug-in execution failed because the Sandbox Client encountered an error during initialization
body: <p>My Dynamics CRM instance refuses to run plugins. Unfortunately I don't have physical access to the environment, I cannot debug or investigate. Only guess and instruct system administrator to try another approach.</p>
  
  <p>I started from compiling sample plugins from MS CRM SDK and registering it. On the server it's possible to register in <code>sandbox</code> mode only. I don't have Deployment Administrator privileges.</p>
  
  <p>Plugin is registered on <code>Create</code> message on <code>account</code> entity — in the way SDK asks to do. But following run time error blocks execution:</p>
  
  <pre class="lang-xml prettyprint-override"><code>Unhandled Exception: System.ServiceModel.FaultException`1[[Microsoft.Xrm.Sdk.OrganizationServiceFault, Microsoft.Xrm.Sdk, Version=5.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35]]: The plug-in execution failed because the Sandbox Client encountered an error during initialization.Detail: 
  &lt;OrganizationServiceFault xmlns:i="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://schemas.microsoft.com/xrm/2011/Contracts"&gt;
    &lt;ErrorCode&gt;-2147204748&lt;/ErrorCode&gt;
    &lt;ErrorDetails xmlns:d2p1="http://schemas.datacontract.org/2004/07/System.Collections.Generic" /&gt;
    &lt;Message&gt;The plug-in execution failed because the Sandbox Client encountered an error during initialization.&lt;/Message&gt;
    &lt;Timestamp&gt;2013-04-10T07:53:37.9238143Z&lt;/Timestamp&gt;
    &lt;InnerFault i:nil="true" /&gt;
    &lt;TraceText&gt;
  
  [SamplePlugins: Microsoft.Crm.Sdk.Samples.FollowupPlugin]
  [0a47eeb7-b3a1-e211-8ab3-00155d008717: Microsoft.Crm.Sdk.Samples.FollowupPlugin: Create of account]
  </code></pre>
  
  <p>
  </p>
  
  <ul>
  <li>I tried different types of plugins, either custom or samples from Microsoft, all the same — they fail on remote server. </li>
  <li>I tried the same plugins on local development server — they all succeeded. </li>
  <li>I tried to run Sandbox service on local development server under minimal privileges to reproduce the error locally, but it doesn't show up.</li>
  <li>I asked to run Sandbox service on remote development server under maximum privileges to resolve issue remotely, but in vain.</li>
  </ul>
  
  <p>Could you please give me an clue, what I could try next, to fix the issue?</p>