![(Updated) Auto upgrade of shared calendars from legacy MAPI model to modern REST model [MC1287370]](https://mwpro.co.uk/wp-content/uploads/2024/08/pexels-steve-27366415-1024x683.webp "(Updated) Auto upgrade of shared calendars from legacy MAPI model to modern REST model [MC1287370] 1")
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(Updated) Auto upgrade of shared calendars from legacy MAPI model to modern REST model [MC1287370]
Message ID: MC1287370 (Updated) Updated April 29, 2026: We have updated the content. Thank you for your patience. [Introduction]Microsoft is introducing an automatic upgrade for shared calendars in Outlook and Exchange Online, transitioning from the legacy MAPI-based model to the modern…
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