If you have any issue to configure Office 365 in Microsoft Outlook or issue with Autodiscover, try with the tool ,

Microsoft Support and Recovery Assistant for Office 365

URL: https://diagnostics.outlook.com/#/

Issue & Resolution: Can’t configure the Office 365 Email in the Outlook.

When your autodiscover is directing to the web url / domain, the issue here is that cPanel is getting in the way of Autodiscover.

Login into cPanel and set the Mail Routing on their domains, specifically to ‘Remote Mail Exchange’. Once you set, you should be able to configure your Office365 email in the Outlook.