Hi Goatberg,
Thanks for your post in Microsoft Community.
It sounds like you cannot use device manager remotely on a Windows 10 target. That's because the connection to Device Manager remotely is no longer supported on Windows 10 system. You must log in to the computer locally to use Device Manager.
This link | Errors connecting to Device Manager remotely - Windows Server | Microsoft Docs for your easy reference.
Feel free to post back if you need further assistance.
Best Regards,
Lynn Sun | Microsoft Community Support Specialist
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