![(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-bess-hamiti-83687-36487-1024x683.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 21, 2026: We have updated the timeline. 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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![(Updated) Microsoft Teams: Rule-based enablement of Microsoft 365 third-party apps in the Teams admin center [MC1085133]](https://mwpro.co.uk/wp-content/uploads/2024/08/pexels-pachon-in-motion-426015731-16931380-1024x683.webp "(Updated) Microsoft Teams: Rule-based enablement of Microsoft 365 third-party apps in the Teams admin center [MC1085133] 4")
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