@Madscientist Thanks for posting in our Q&A.
To clarify this issue, we appreciate your help to collect some information:
- What version of ConfigMgr are you running?
- Please check if the device shows the same device name in Azure AD portal.
- Please try to click "sync" in Settings > Accounts > Access work or school in the affected device and check if the device name shows correct.
If there is anything update, feel free to let us know.
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