Direct users to sign in
With the steps completed to onboard the directory, you can direct Fabrikam users to sign in. Fabrikam users (users with the fabrikam.onmicrosoft.com suffix) sign in by visiting https://portal.local.azurestack.external.
You'll direct foreign principals in the Fabrikam directory (without suffix fabrikam.onmicrosoft.com) to sign in using https://portal.local.azurestack.external/fabrikam.onmicrosoft.com.
Important
If users don't use this URL, they're sent to their default directory (Fabrikam) and receive an error that says their administrator hasn't consented.