Autodiscover in Outlook is a big improvement when creating our account settings. If  your company’s DNS settings for Autodiscover is not set correctly, Autodiscover will reset your custom settings under Advanced Settings. When this happens Outlook will fail to connect.

For example, a user reported the following:

I set the Exchange Server to be: https://mail.microautomation.com and after it connects, the URL changes to: https://mail.microaut.com/EWS/Exchange.asmx

The fact that this is happening implies that the Autodiscover response for this user’s server . . .

Continue Reading: Exchange Autodiscover workaround for Advanced Settings