How to change the primary user for an Intune managed device
Recently released in preview, Intune now supports changing the primary user of Windows 10 devices! The process is fairly simple. In the MEM portal (https://devicemanagement.microsoft.com), select Devices > All Devices (or Windows) > and any Windows 10 device.
Under Properties, select Change primary user:
Select a user from the popout and that’s it! Just be sure that the user you select is licensed, or it won’t accept the input: