title: Client authentication error when starting Visual Studio 2015 SP3
body: <p>I just performed a clean install of Visual Studio 2015 SP3, and I'm getting this in the Output window at startup:</p>
  <blockquote>
  <p>We were unable to automatically populate your Visual Studio Team Services accounts.</p>
  <p>The following error was encountered: TF400813: Resource not available for anonymous access. Client authentication required.</p>
  </blockquote>
  <p>I'm not using VSTS at all, nor have I configured any connections to it. (I do, however, have a connection configured to an on-premises TFS instance.)</p>
  <p>How may I dispense with this error message? I'd like to instruct Visual Studio to never attempt a connection to VSTS at startup.</p>