If it fails too, Outlook will try to use the SRV record lookup method. If it fails, Outlook will try the HTTP redirect method. For example, in a scenario with a machine not joined to a domain, Outlook will try to connect to the predefined URLs (such as ) by using DNS. 2017 and later versions)īy default, Outlook will try one or more of these methods if it can't reach Autodiscover. Direct Connect to Office 365 (new for Outlook 2016 version.Cached URL in the Outlook profile (new for Outlook 2010 version.The currently implemented methods used by Outlook are: When Outlook tries to contact the Autodiscover service on the Exchange server with the Client Access Server (CAS) role, it can use several different methods to reach the service, depending on the client-server topology. When Microsoft Outlook tries to retrieve Autodiscover information from a server that's running Microsoft Exchange Server, you may experience unexpected results if you're using one or more of the available registry values that can be used to control Autodiscover. Applies to: Outlook 2019, Outlook 2016, Outlook 2013, Outlook 2010, Office Outlook 2007.Unexpected Autodiscover behavior when you have registry settings under the \Autodiscover key
