Hi,
Thank you for posting in Microsoft Q&A forum.
1,Similar thread for your reference. The solution is to update the Azure AD web app with the latest Configuration Manager settings.
[https://learn.microsoft.com/en-us/answers/questions/1164434/sccm-collection-cloud-sync-to-azure-ad-group-(co-m](https://learn.microsoft.com/en-us/answers/questions/1164434/sccm-collection-cloud-sync-to-azure-ad-group-(co-m)
2,For those machines that have failed to sync, we can run the command dsregcmd.exe /status to check if they are AAD joined. We can also consult ClientIDManagerStartup.log and ADALOperationProvider.log on the client side to see if there is any further information.
3,Also please check the CollectionAADGroupSyncWorker.log on the server, it is the log file for synchronization of collection membership results to Azure Active Directory.
Here is a good article to troubleshoot SCCM collection sync to AAD group for your reference:
Troubleshooting: Endpoint Configuration Manager Device Collection Membership Synchronization
Thanks for your time. Have a nice day!
Best regards,
Simon
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