calendar retention

The calendar retention tag covers Microsoft 365 guidance on viewing calendars stored in Online Archive mailboxes, including the planned Outlook for Mac update targeted for June 2027. The available coverage emphasizes that an archived calendar is not automatically an active scheduling calendar or a replacement for the primary calendar. Administrators should distinguish calendar visibility from meeting creation, delegation, free/busy lookup, invitations, and mobile scheduling. Current guidance says archived calendars cannot be viewed in Outlook on the web by design, with Outlook desktop serving as the stated workaround. The tag follows how Microsoft’s roadmap may expand archive-calendar access while leaving the broader scheduling role unchanged.