MSN Live Calendar does not appear in outlook 2103 desktop

The office team reloaded my office 365 and upon doing so I lost my MSN live Calendar desktop sync.

I cannot get it to sync, but my contacts and emails from my msn account sync.

Unfortunately, when I get a calendar invite its to that calendar and impossible to accept into the other two icloud calendars that sync.

I need to know what support staff is best to figure out why the server is syncing the mail and contacts, but not the calendar with Microsoft.