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ADFS authentication issues with Chrome and Firefox

May 30, 2013

When using Google Chrome or Mozilla Firefox to access MSOL services such as OWA webmail, users may be continually prompted for credentials and unable to logon


Authentication Required
The server https://{sts_fqdn}:443 requires a username and password.

In order to resolve, you must disable Extended Protection in IIS on your ADFS server(s)

  1. Open IIS Manager on your ADFS Server(s)
  2. Expand your ADFS Server
  3. Expand Sites
  4. Expand Default Web Site
  5. Expand adfs
  6. Left-click to select ls
  7. Double-click Authentication


  8. Right-click Windows Authentication and choose Advanced Settings…


  9. Change Extended Protection to Off


  10. Restart IIS or perform an iisreset

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