Find your Microsoft 365 tenant ID
Your Microsoft 365 tenant ID is a globally unique identifier (GUID) that is different than your organization name or domain. You can use this identifier when configuring OneDrive policies.
Find your Microsoft 365 tenant ID in the Microsoft Entra admin center
Your tenant ID can be found in the Tenant ID box on the Overview page.
Note
For info about finding your tenant ID by using PowerShell instead, first read Microsoft Graph PowerShell and then use Get-MgOrganization.