As a temporary solution (quick fix) you can modify the HOSTS file on the workstation adding a line for the autodiscover service location.Read the Knowledge Base article on What Is An Autodiscover Record And Why Do I Need It? for more information. Contact a DNS hosting provider for your domain and create a CNAME record for the autodiscover hostname.A special DNS record has to be configured for your domain. Outlook 2016/2019 can be set up to connect to Exchange only if there is a valid Autodiscover information for your domain. There is no Autodiscover record created for your Domain There is no Autodiscover record for your Domain.Possible reasons for Outlook 2016/2019 issues with connecting to Exchange are: This article describes possible causes for issues with Outlook 2016/2019 when connecting to an Exchange mailbox and ways to solve them.