Hi,
Thanks for posting in Microsoft MECM Q&A forum.
A similar thread for your reference: SCCM Collection based on AD group having inconsistent results
If the device does NOT have CM client on it, it will be populated by AD Group discovery or AD system discovery.
If the device HAS CM client on it, it will be populated by Heartbeat discovery. AND the device need to know that it belongs to the group (aka logon (reboot)).
Please restart the problematic computer and check the InventoryAgent.log and InventoryProvider.log on the computer. And we can monitor the adsgdis.log and adsysdis.log on the site server.
Hope it helps. Have a nice day!
Best regards,
Simon
If the response is helpful, please click "Accept Answer" and upvote it.
Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.