Hi @Michael Deacon ,
Currently the ability to add multiple tenants in Azure Sentinel has been deprecated.
Quote from Microsft:
If you had previously connected multiple tenants to Azure Sentinel, using an older version of the Office 365 connector which supported this, you will be able to view and modify which logs you collect from each tenant. You will not be able to add additional tenants, but you can remove previously added tenants.
For better data privacy and security, it' s necessary to use Azure Lighthouse for cross- and multi-tenant management.
Thank you for your understanding.
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