Information
This policy setting allows backup and restore of cellular text messages to Microsoft's cloud services.
The recommended state for this setting is: Disabled
In a high security environment, data should never be sent to any third-party since this data could contain sensitive information.
Solution
To establish the recommended configuration via GP, set the following UI path to Disabled:
Computer Configuration\Policies\Administrative Templates\Windows Components\Messaging\Allow Message Service Cloud Sync
Note: This Group Policy path may not exist by default. It is provided by the Group Policy template Messaging.admx/adml that is included with the Microsoft Windows 10 Release 1709 Administrative Templates (or newer).
Impact:
Cellular text messages will not be backed up to (or restored from) Microsoft's cloud services.