@Md Nasir Uddin, Thanks for posting in Q&A. Based as I know, windows Core is not included in Intune operating system supported list. We can't manage such device in Intune. So you will see some abnormal in company portal on such device.
https://learn.microsoft.com/en-us/mem/intune/fundamentals/supported-devices-browsers#microsoft
If you want to manage the device in Intune, please change to a supported operating system.
Hope the above information can help.
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