We have a customer with Office 2007 and needed to set up an Office 365 account. Auto Discover was looking for the server, so I put in “outlook.office.com”

The following web link gave great detailed instructions for manually configuring the mail server.

https://oit.colorado.edu/tutorial/office-365-outlook-windows-manual-exchange-configuration

The real ticket was manually configuring the email server.

Let us know if this helped you…