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  2. ›Microsoft Azure
  3. ›Virtual Machine Scale Sets
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Preview•Jun 2, 2026

Public Preview: Automatic OS Image Upgrades for VMSS Flex

Virtual Machine Scale SetsAzure · Compute

Automatic OS Image Upgrades for Virtual Machine Scale Sets (VMSS) using Flexible Orchestration are now in public preview, enabling consistent, fleet-wide OS updates with reduced manual effort. This capability extends automated image upgrades to VMSS Flex, helping customers maintain secure, compliant, and up-to-date infrastructure at scale while lowering operational overhead.

With this release, Azure shifts from per-VM patching to platform-driven, orchestrated updates applied across the entire scale set. Updates are rolled out using health-based progression, ensuring upgrades continue only when instances remain healthy, improving reliability and reducing risk.

Learn more.

Read the original announcement↗

More from Virtual Machine Scale Sets

All Virtual Machine Scale Sets updates →

  1. Generally Available: Trusted Launch as Default

    Trusted Launch as Default (TLaD) is now generally available for new Azure Gen2 virtual machines and virtual machine scale sets.

    Virtual Machine Scale Sets•Generally available•Aug 3, 2026

  2. Public Preview: Ephemeral OS Disk with full caching for VM/VMSS

    Ephemeral OS Disk with full caching is now available in public preview for Azure VM/VMSS, bringing significantly faster and more reliable OS disk performance to your workloads.

    Virtual Machine Scale Sets•Preview•Mar 30, 2026