Backstage launch system apps and settings by deep link URI

We cannot open settings windows, or open system apps by their deep link URI:

For example, running the command "start ms-settings:about" will open the System > About page in the active user session (not in back stage).

Ideally, I would like to enroll all computers by going Backstage and running the enrollment app via deep link
ms-device-enrollment:?mode=mdm

See: https://learn.microsoft.com/en-us/windows/client-management/mdm-enrollment-of-windows-devices#connect-to-mdm-using-a-deep-link

Instead, I get this error.

Running "start ms-device-enrollment:?mode=mdm" gives an error:

start : This command cannot be run due to the error: The operation attempted is not supported.

At line:1 char:1

+ start ms-device-enrollment:?mode=mdm

+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

+ CategoryInfo : InvalidOperation: (:) [Start-Process], InvalidOperationException

+ FullyQualifiedErrorId : InvalidOperationException,Microsoft.PowerShell.Commands.StartProcessCommand