How Outlook Autodiscover Works

How Outlook Autodiscover Works

Outlook 2007/2010/2013 uses the autodiscover function for the following list of information

  • The user’s display name
  • Separate connection settings for internal and external connectivity
  • The location of the user’s Mailbox server
  • The URLs for various Outlook features that govern functionality such as free/busy information, Unified Messaging, and the offline address book
  • Outlook Anywhere server settings

All the above information is taken in XML file and provided to the Outlook client by using the following method

  • SCP lookup
  • HTTPS root domain query
  • HTTPS Autodiscover domain query
  • HTTP redirect method
  • SRV record query
  • Local XML file
  • cached URL in the Outlook profile (new for Outlook 2013)

To disable the autodiscover functionality of the Outlook add the key and make it as 1 under the following registry path


  • PreferLocalXML
  • ExcludeHttpRedirect
  • ExcludeHttpsAutoDiscoverDomain
  • ExcludeHttpsRootDomain
  • ExcludeScpLookup
  • ExcludeSrvRecord
  • ExcludeLastKnownGoodURL (only applies to Outlook 2013)

Enable Logging in Outlook and you trace the file OlkDisc.log located in %temp% folder to understand on how Outlook Autodiscover works


About Raji Subramanian

Nothing great to say about me...Just want to share my knowledge for others that will be useful at any moment of time when they stuck in critical issue....
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One Response to How Outlook Autodiscover Works

  1. Aakash Shah says:

    olkdisc.log doesn’t appear to get created in Outlook 2013 when advanced logging is enabled. How can we obtain AutoDiscover information from Outlook 2013?


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