getMailboxUsageDetails returning a ID instead of UserprincipalName and DisplayName

Question

Hi,

Very recently this query has started to output a ID instead of actual users UPN and DisplayName. This used to output the proper UPN and DisplayName.
Anybody know what this ID is and if it's able to query Exchange/Azure/M365 to get the actual UPN and DisplayName?
https://graph.microsoft.com/beta/reports/getMailboxUsageDetail(period='D7')?$format=application/json

The same result shows for different tenants.

Thanks

Answer 1

This is because of Privacy changes to Microsoft 365 Usage Analytics that hide properties that identify the user. You need to disable the anonymize user data feature. Follow the steps in the screenshot below from Admin Portal.

Answer 2

Thank you, this solved the issue!