A team plans App Attach on Entra-joined session hosts with Azure Files. The SMB image share is already in the hosts’ Azure region. Which two additional conditions follow the documented Azure Files procedure for this join model?

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A.Assign Reader and Data Access to both the AVD and AVD ARM Provider service principals on the app storage account.
B.Use an NFS-only share so the host can bypass SMB image mounting.
C.Use a storage account in the same subscription as the session-host VMs.
D.Grant only each end user Storage File Data SMB Share Contributor and treat that as complete app-image access.

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Assign Reader and Data Access to both the AVD and AVD ARM Provider service principals on the app storage account.
Use a storage account in the same subscription as the session-host VMs.

The Entra-joined Azure Files App Attach procedure requires the same VM subscription and the documented access for both AVD service principals. These are not the ordinary user-profile share permissions. Option explanations: A. Assign Reader and Data Access to both the AVD and AVD ARM Provider service principals on the app storage account.: Both service principals require this role under the documented current procedure. B. Use an NFS-only share so the host can bypass SMB image mounting.: App Attach images use an accessible SMB share; an NFS-only share does not meet this requirement. C. Use a storage account in the same subscription as the session-host VMs.: The setup prerequisites explicitly require the storage account and session-host VMs to share a subscription. D. Grant only each end user Storage File Data SMB Share Contributor and treat that as complete app-image access.: User-profile share rights are not a replacement for the documented host/service app-image access path. Sources: App Attach in Azure Virtual Desktop — https://learn.microsoft.com/azure/virtual-desktop/app-attach-overview; Add and manage App Attach applications — https://learn.microsoft.com/azure/virtual-desktop/app-attach-setup

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