“Sorry, we’are having server problems, so we can’t add Office 365 SharePoint right now. Please try again later.“
User was trying to add another Office 365 Mailbox in same Outlook profile. Same thing worked fine on other Mac machine and Windows machine, also the same account could be configured in default Mail App on Mac.
Issue: Mac User Profile
Resolution: Create new Mac User Profile with Admin rights
Created the new Mac profile with admin rights and logged into Mac with new profile. Configured both the Office 365 Mailbox in same Outlook profile and it worked just fine.
Note: The error message has nothing to do with SharePoint, its just confusing message. There is no other solution available @ this point of time from Microsoft.