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OneDrive usage reports and Graph API endpoints /reports/getOneDriveUsageAccountDetail started returning GUIDs for ownerDisplayName, ownerPrincipalName, and siteURL instead of the actual data values that had previously been returned.
The removal of user-identifiable information in Admin Center reports was announced via the following Message Center post MC275344 .
This is an expected behavior, which was implemented starting Sep 1st, 2021. Please see article https://docs.microsoft.com/en-US/microsoft-365/admin/activity-reports/activity-reports?WT.mc_id=365AdminCSH_inproduct&view=o365-worldwide.
Note: The article needs to be updated, with right settings to change.
To revert to default you will need to take following steps:
Global administrators can revert this change for their tenant and show identifiable user information if their organization’s privacy practices allow it. It can be achieved in the Microsoft 365 admin center by following these steps:
In the admin center, go to the Settings > Org Settings > Services page.
Uncheck “In all reports, display de-identified names for users, groups, and sites.”
It’ll take a few minutes for these changes to take effect on the reports in the report’s dashboard. This setting also applies to the reports API. Showing identifiable user information is a logged event in the Microsoft 365 compliance center audit log.
Brought to you by Dr. Ware, Microsoft Office 365 Silver Partner, Charleston SC.