Personal assignments guarantee session persistence for long-running tasks. Compute-optimized VMs (like the Dv5/Ev5 series) provide the required CPU performance. The shutdown-on-disconnect with time-based autoscale ensures the VMs are only running (and incurring cost) during the required business hours, while preserving the user’s session state when shut down. This balances performance, user experience, and cost.

The scenario describes an application-specific graphics issue, which is a classic symptom of compression artifacts. RemoteFX policies (specifically ‘Configure RemoteFX Adaptive Graphics’ and ‘Configure compression for RemoteFX data’) allow you to control compression algorithms per application. Adjusting these for the problematic engineering app to use a less lossy compression is the targeted fix, rather than changing global settings or client types.

The Az.DesktopVirtualization module is the current, Azure Resource Manager (ARM)-based PowerShell module for managing all core AVD objects like host pools, application groups, workspaces, and session hosts. While Microsoft.RDInfra.RDPowershell is an older module, Az.DesktopVirtualization is the recommended and actively developed module for modern deployments and should be used for new administrative setups.

The standard MSIX app attach process involves: 1) Placing the package in storage, 2) Creating the app attach manifest, 3) Configuring the host pool, 4) **Staging** the package on the host (which extracts it), and 5) **Registering** the package for a user at sign-in. The registration step (`Register-AppxPackage`) is what makes the app visible and executable in the user context. Staging alone is not sufficient.

For a generalized image to work correctly with the AVD agent, you must prevent the agent from trying to update itself on first boot (which can fail before networking is fully initialized) and run registration commands. Placing an empty file named `agentupdate.disabled` in the Sysprep directory blocks the self-update. The `FirstLogonCommands.xml` file contains the PowerShell commands to register the VM with the AVD service, which is executed during the specialize phase of Sysprep.

SMB Multichannel is a key feature for Azure Files performance, especially for FSLogix scenarios. It allows a single SMB session to use multiple network connections simultaneously, significantly increasing throughput and reducing latency. This is a configuration change on the storage account and requires supported OS versions on the session hosts. It is more directly impactful for SMB performance issues than just upgrading the tier (Premium already supports it) or changing caching settings.

Azure Policy is the governance tool designed specifically for enforcing organizational standards and compliance at scale. You can create a policy definition with the ‘allowedLocations’ condition and assign it with a ‘Deny’ effect. This will prevent the creation of any new storage accounts (and thus file shares) outside the specified list of compliant regions, which is a proactive control. Resource locks protect against deletion but not creation in the wrong place, and network features like endpoints don’t control geography.

The ‘Capacity threshold’ is the percentage of available sessions that triggers scaling out. If it’s set very high (like 90%), the plan will wait until hosts are almost full before adding more. Conversely, the scaling-in logic will try to maintain buffer. If the threshold is high and the minimum percentage of hosts (80%) still provides more total sessions than the current user load requires, the plan will deallocate the ‘excess’ VMs to meet the 80% floor, even during peak hours. A lower capacity threshold (e.g., 60%) would trigger scale-out earlier and maintain more buffer, making scale-in less aggressive during defined peak times.

COM port redirection is supported in AVD. The correct method is to enable it at the host pool level by modifying the RDP Properties. Adding `redirectcomports:i:1` to the default RDP properties of the host pool allows the setting for all connections. This setting, combined with the user having the necessary local permissions and the driver being available on the session host OS, will allow the published RemoteApp (or desktop) to access the COM port on the user’s physical device.

Personal assignments guarantee session persistence for long-running tasks. Compute-optimized VMs (like the Dv5/Ev5 series) provide the required CPU performance. The shutdown-on-disconnect with time-based autoscale ensures the VMs are only running (and incurring cost) during the required business hours, while preserving the user’s session state when shut down. This balances performance, user experience, and cost.0