Hi,
Thank you for posting in Microsoft Q&A forum.
1,Are your Azure App's setup correctly? Refer to the official article:
https://docs.microsoft.com/en-us/mem/configmgr/cloud-attach/enable
2,Ensure Grant admin consent for Tenant is selected for the Microsoft Entra application. For more information, see Grant admin consent in App registrations
3,If possible, we could disable cloud attach, remove the app registration, and then re-enable cloud attach to have a try.
Thanks for your time. 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.