Azure Virtual Desktop (AVD) Advanced Interview Questions (2026)

What is a host pool, and pooled vs personal?

A host pool is a collection of session hosts. Pooled = many users share hosts (cost-efficient, non-persistent); personal = one dedicated host per user (persistent desktops).

Why is FSLogix essential in AVD?

FSLogix roams the user profile as a container (VHD/X on Azure Files/NetApp), so in a pooled, non-persistent environment users get their profile, settings and OneDrive cache on any host — fast sign-in, consistent experience.

How do scaling plans save cost?

Scaling plans ramp session hosts up/down on a schedule and load, deallocating VMs off-peak so you only pay for compute you need, while honouring drain and ramp settings.

How do users connect and what's the control plane?

Microsoft manages the AVD control plane (brokering, gateway, diagnostics). Users connect via the Windows App/web client; authentication is Entra ID, often with Conditional Access and MFA.

How do you secure AVD?

Entra ID Conditional Access + MFA, no public RDP (reverse-connect via the gateway), network isolation, Microsoft Defender, and least-privilege RBAC. Session hosts can be Entra-joined and managed by Intune.

How does Intune fit with AVD?

Intune manages pooled/personal session hosts as endpoints — policies, updates, security baselines and app deployment — unifying desktop and AVD management.

What networking does AVD need?

Session hosts sit in a VNet with outbound access to required Azure service tags/URLs; often ExpressRoute/VPN to on-prem, and private connectivity to FSLogix storage.

How do you deliver applications?

Full desktops or RemoteApp (individual apps), with MSIX app attach to layer apps onto hosts without baking them into the image.

How do you troubleshoot slow logons?

Usually FSLogix profile size/latency, storage IOPS, or GPO processing. Check FSLogix logs, storage performance, and profile container size.