Upgrade from 365 Basic to 365 Premium and Outlook Calendars won't Sync - Microsoft Q&A

Upgrading from Microsoft 365 Basic to Premium may cause Outlook Calendar synchronization issues between Outlook New and Outlook Classic, requiring user support to resolve.

“I have a service request : [Moderator Note: Personal Info Removed]. Need to speak with an actual individual. My calendar won't sync from Outlook New to Outlook Classic when I upgraded from Basic to Premium. Moved from Microsoft 365 and Office | Install, redeem, activate | For home | Windows”

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Audience

end_usersupport

Environment

cloud

Classification confidence: 85%

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