Can't see the Calendar folder of an online archive mailbox by using Microsoft Outlook Web App


Office 365 ProPlus is being renamed to Microsoft 365 Apps for enterprise. For more information about this change, read this blog post.

Original KB number: 4341449


Assume that you have a cloud mailbox, and Exchange Online Archiving is enabled for the mailbox. In Outlook Web App (Microsoft Outlook Web App), you can't see the Calendar folder of the online-archive mailbox.


The behavior is by design.


Use the Outlook client to access calendar items in the online-archive mailbox.