title: Auth on servicestack works locally and on iis7 , but fails on iis6
body: <p>I have </p>
  
  <ol>
  <li>implemented a basic servicestack-service</li>
  <li>decorated it with the [Authenticate(ApplyTo.All)] </li>
  <li>setup the minimum configuration needed to get Basic Authentication (<a href="https://github.com/ServiceStack/ServiceStack/wiki/Authentication-and-authorization" rel="nofollow">see this</a>)</li>
  </ol>
  
  <p>The service is protected fine when running locally, and similar on IIS7-server - but when deployed to a IIS6 I can't get access to the service. It keeps asking for username/password - but it won't accept the correct combination.</p>
  
  <p>So far I have tried the following without any luck</p>
  
  <ol>
  <li>examined the servers eventlogs for errors (no errors/warnings)</li>
  <li>changed the customlocation from /api to /api.ashx (no change)</li>
  <li>changed the username/password to a more complicated combination (no change)</li>
  <li>implemented a custom credentials auth provider (based on BasicAuthProvider) ( no change)</li>
  </ol>
  
  <p>Can anyone suggest what I can do next ?</p>