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Hello,
Please see the following documentation:
Delete an Azure Active Directory Domain Services managed domain using the Azure portal
https://learn.microsoft.com/en-us/azure/active-directory-domain-services/delete-aadds
Please make sure you are certain:
Deletion is permanent and can't be reversed.
When you delete a managed domain, the following steps occur:
- Domain controllers for the managed domain are de-provisioned and removed from the virtual network.
- Data on the managed domain is deleted permanently. This data includes custom OUs, GPOs, custom DNS records, service principals, GMSAs, etc. that you created.
- Machines joined to the managed domain lose their trust relationship with the domain and need to be unjoined from the domain.
- You can't sign in to these machines using corporate AD credentials. Instead, you must use the local administrator credentials for the machine.
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