So no matter what you do Office 365 exchange won’t connect to outlook.

Here are a few tips that have helped us.

Using Outlook 2007? Forget it move them to a newer version.

Outlook 2010 ? You just need a service pack.

 
Service Pack 2 for Microsoft Office 2010 (KB2687455) 32-Bit Edition
https://www.microsoft.com/en-us/download/details.aspx?id=39667

This will fix 90% of issue with outlook 2010 […]