Perform these steps to check whether all federated DNS domain names have successfully migrated to PTA:
- Navigate a browser to portal.azure.com.
- Log in with an account in Azure Active Directory that has the Global administrator role assigned.
- Perform multi-factor authentication when prompted.
- In the left navigation pane, click Azure Active Directory.
- In the Azure AD pane, click Azure AD Connect.
- In the main pane for Azure AD Connect, under User sign-in, you should see that 0 domains use Federation, that all custom DNS domain names use Seamless single sign-on, and that there is one Pass-through Authentication agent.