@Maranya, Damon Thanks for posting in our Q&A.
To clarify this issue, we appreciate your help to collect some information:
- Please make sure the AD-joined PCs are running Windows 10, version 1709 or later.
- From your description, did you mean that you want to use GPO enrollment for a group of devices, not a single PC? If yes, this situation that we don't see this policy may occur because we don't have the ADMX. Please try to refer to the following article:
If there is anything update or anything misunderstanding, feel free to let us know.
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@Maranya, Damon Any problem is worth discussing. I'm glad that my answer is helpful to you.
Thanks and have a nice day. : )