Configuring IIS to authenticate OWA users

IIS must be configured to authenticate before users will be able to log onto Outlook Web Access. Here are step-by-step instructions on how to do it.

I can't access Outlook Web Access. I've set up and configured my domain controller running Windows Server 2003 and Exchange Server 2003, but Outlook Web Access isn't working. I thought by default it's supposed to work.

IIS must be configured to authenticate users before they are able to access the Outlook Web Access Web site:

  1. Open IIS Manager.
  2. Expand the server name, then expand Web sites.
  3. Right click the Web site and then click Properties.
  4. Click Directory Security -> Edit under Anonymous and Access Control.
  5. Select Integrated Windows authentication. 6. For testing purposes, you may select Basic authentication.
  6. Now go to the IP address and domain name restrictions and click Edit.
  7. Click Add under Granted Access and add the domain to the list.
  8. Close IIS and test Outlook Web Access.


This advice is excellent - short and to the point. Thank you very much.
— Macharia K.


After these steps, what would my URL now be?
— Santiago M.

Do you have comments on this Ask the Expert Q&A? Let us know.

Related information from SearchExchange.com:

  • Tip: Is IIS to blame for OWA problems?
  • Tip: Troubleshooting IIS
  • Step-by-Step Guide: How to use ISA Server as an SMTP filter
  • This was first published in November 2005

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