Azure Lighthouse doesn't fully support managing Azure Virtual Desktop environments. Since Lighthouse doesn't currently support cross-Microsoft Entra ID tenant user management, Lighthouse customers still need to sign in to the Microsoft Entra ID that customers use to manage users.
You also can't use CSP sandbox subscriptions with the Azure Virtual Desktop service. To learn more, see Integration sandbox account.
Finally, if you enabled the resource provider from the CSP owner account, the CSP customer accounts aren't able to modify the resource provider.