SharePoint Intranet “Pass through” Authentication

For pass through (also referred to as Challenge/Response) authentication to work, you need to configure Internet Explorer to put those sites in the ‘Intranet’ zone. This also assumes that the Windows client machine (XP Pro or Vista Business) is a member of a ‘domain’.

You can accomplish a ‘trusted’ SharePoint login via the following:




  1. Double click the ‘Internet’ icon at the bottom of the browser. If it says ‘Intranet’, this step is already done.
  2. Then select the Local Intranet icon, click on ‘sites’, Choose ‘Advanced’ and then add your SharePoint Site URL (for example: to the list and click Add.
  3. That should be it!