Error Attaching Application to App Attach

Question

Error encountered while attempting to attach an application to App Attach. The error details are included below.

Answer 1

Hi Jesus Vazquez,

Welcome to the Microsoft Q&A Platform. Thank you for posting your query here.

I understand that you are facing issue with accessing the storage account keys necessary for the MSIX app attach process in Azure Virtual Desktop (AVD).

This article shows you how to add and manage applications with app attach in Azure Virtual Desktop using the Azure portal and Azure PowerShell. I suggest you verify if you have followed the prerequisites mentioned in the document.
https://learn.microsoft.com/en-us/azure/virtual-desktop/app-attach-setup?tabs=portal&pivots=app-attach#prerequisites

In case, the storage account where the MSIX package is stored is not in the same region as the session host. Please try to move the storage account to the same region as the session host and check if that helps.

https://learn.microsoft.com/en-us/troubleshoot/azure/virtual-desktop/troubleshoot-app-attach

The following article provide some guidance on the permissions, performance, and availability required for the file share. https://learn.microsoft.com/en-us/azure/virtual-desktop/app-attach-overview?utm_source=chatgpt.com&pivots=app-attach#permissions

Note: When creating an MSIX image, you convert an MSIX package to a VHD, VHDX, or CIM disk image using the MSIXMGR tool. We recommend using CIM for best performance, particularly with Windows 11, as it consumes less CPU and memory, with improved mounting and unmounting times. We don't recommend using VHD; use VHDX instead.
https://learn.microsoft.com/en-us/azure/virtual-desktop/app-attach-create-msix-image?tabs=vhdx#create-an-app-attach-disk-image

Hope this helps!

Let me know if you have any further queries!

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Answer 2

Hi!,

We were able to resolve the issues by applying the permissions by assigning the Reader and Data Access Azure role-based access control (RBAC) role to both the Azure Virtual Desktop and Azure Virtual Desktop ARM Provider service principals.

Thank you!