Hi, @Praveenraj Thyagarajan
Thank you for posting in Microsoft Q&A forum.
Do we have subscription to the Microsoft Defender Advanced Threat Protection online service?
Have we followed the guidance to create a Microsoft Defender ATP Policy?
https://learn.microsoft.com/en-us/mem/configmgr/protect/deploy-use/defender-advanced-threat-protection
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.