Upload method for publishing calendars to Office Online must be restricted.

From Microsoft Outlook 2013 STIG

SV-53873r1_rule Upload method for publishing calendars to Office Online must be restricted.

Vulnerability discussion

When users publish their calendar to Microsoft Office Online 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. When an organization has policies that govern the use of external resources such as Microsoft Office Online, allowing Outlook to publish calendar updates automatically might violate those policies.

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Fix text

Set the policy value for User Configuration -> Administrative Templates -> Microsoft Outlook 2013 -> Outlook Options -> Preferences -> Calendar Options -> Office.com Sharing Service "Restrict upload method" to "Enabled".

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