A Microsoft desktop and app virtualization service that runs on Azure. Previously known as Windows Virtual Desktop.
B2B users showing as Members and having RBAC roles doesn't automatically make AVD resources visible. Check that the users are assigned to the Desktop Application Group (DAG), that the DAG is linked to a workspace, and that SSO is enabled. Also, are your session hosts Entra joined or hybrid joined? Cross-tenant AVD access requires Entra-joined hosts. Try signing into Windows App under the AVD resource tenant's organization rather than the user's home tenant.