Information
This policy setting controls whether Outlook can automatically upload calendar updates to Office.com.
The recommended state for this setting is: Enabled
When users publish their calendar to Microsoft Office.com using the Microsoft Office Outlook Calendar Sharing Service, Outlook updates the calendars online at regular intervals unless they click Advanced and select Single Upload: Updates will not be uploaded from the Published Calendar Settings dialog box. Allowing this could inadvertently expose data that was not meant to be shared.
Solution
To establish the recommended state via configuration profiles, set the following Settings Catalog path to Enabled :
Microsoft Outlook 2016\Outlook Options\Preferences\Calendar Options\Office.com Sharing Service\Restrict upload method
Impact:
This setting could cause disruptions for users who publish their calendars to the Microsoft Office Outlook Calendar Sharing Service. These users will have to use the Single Upload option to manually update their calendars. If users do not publish regularly, their online calendars could become significantly out of date.