The use of personal accounts for OneDrive synchronization must be disabled.

OneDrive provides access to external services for data storage, which must be restricted to authorized instances. Enabling this setting will prevent the use of personal OneDrive accounts for synchronization.

If the following registry value does not exist or is not configured as specified, this is a finding.

Registry Hive: HKEY_CURRENT_USER Registry Path: \Software\Policies\Microsoft\OneDrive\

Value Name: DisablePersonalSync

Value Type: REG_DWORD Value: 0x00000001 (1)

Configure the policy value for User Configuration >> Administrative Templates >> OneDrive >> "Prevent users from syncing personal OneDrive accounts" to "Enabled".

Group policy files for OneDrive are located on a system with OneDrive in "%localappdata%\Microsoft\OneDrive\BuildNumber\adm\".

Copy the OneDrive.admx and .adml files to the \Windows\PolicyDefinitions and \Windows\PolicyDefinitions\en-US directories respectively.