Directory Service Support for MSIX App Attach
You have an Azure Virtual Desktop deployment. You plan to deploy a host pool named Pool1 that will contain 10 session hosts. The session hosts will use MSIX app attach. Which directory service supports MSIX app attach?
Community Votes
100% of anonymous learners picked answer B. Votes are pick records left by other test-takers — they are not the verified answer.
Community Insight
MSIX app attach requires traditional Active Directory domain join; assuming cloud-only identity providers like Microsoft Entra ID are supported is the common trap.
MSIX app attach in Azure Virtual Desktop has specific identity provider requirements. This page establishes that Active Directory Domain Services (AD DS) is the only supported directory service for this feature.
Choosing Microsoft Entra ID or Microsoft Entra Domain Services because they are commonly used for Azure Virtual Desktop, failing to recognize MSIX app attach's strict AD DS requirement.
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Expert Analysis
Why the Answer Is Correct
MSIX app attach relies on Active Directory computer objects and specific Group Policy extensions to mount and register MSIX packages dynamically. Because of these deep dependencies on traditional domain features, it currently only supports Active Directory Domain Services (AD DS) as the identity provider.Why the Other Options Are Wrong
Options including Microsoft Entra ID or Microsoft Entra Domain Services are incorrect because MSIX app attach does not support cloud-only or managed domain environments for app package registration. Microsoft Entra ID lacks the required computer object attributes and Group Policy support, while Microsoft Entra Domain Services does not support the necessary schema extensions.Community Comment Notes
The community strongly agrees on AD DS only, frequently citing the official documentation. As jeff1988 noted, "MSIX app attach is supported only with Active Directory Domain Services (AD DS)" directly from the Microsoft overview. Multiple other users referenced the same documentation pivot to confirm the restriction.Official Reference
Exam Strategy
For Azure Virtual Desktop feature questions, pay close attention to identity provider prerequisites. Features involving complex host-level integrations, like MSIX app attach, often strictly require AD DS rather than cloud-based identity solutions.
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