Azure AKS (changelog)

azure/aks last check 111 releases today
Notes
Release notes
vAppNet 2026-08-19 · today
view on github

AppNet Release Notes - 2026-08-19

> Azure Kubernetes Application Network (AppNet) — initial release notes covering changes since March 2026. AppNet is in public preview.

Announcements and retirements

  • The following AppNet versions have been retired and are no longer supported. If using self-managed upgrade mode, upgrade to a currently supported version (see Component updates) following the AppNet upgrade guide.
  • AppNet is now available in public preview in additional Azure regions, including Central US, East US, East US 2, Japan East, North Central US, North Europe, South India, Southeast Asia, West Central US, West US 2, and West US 3.

Bug fixes

  • AppNet now validates cluster prerequisites at member-join time and returns a clear, actionable error when a cluster is missing a required add-on (Microsoft Entra / AAD or the Managed Gateway API) or is running an AKS Kubernetes version below the minimum supported version, instead of failing opaquely later.
  • Clusters using AKS managed Gateway API no longer hit a CRD ownership conflict when joining a mesh; AppNet defers to the add-on-provided Gateway API CRDs.
  • Moving AppNet resources across resource groups or subscriptions is now blocked, as these move operations are not supported for AppNet.
  • Fixed an issue where the AppNet Managed Control Plane could fail to start after an intermediate certificate authority rotation, which could disrupt the entire mesh. Certificate rotation is now handled reliably.
  • Fixed an issue where multicluster east-west gateways were missing a required network label, causing cross-cluster traffic to fail.
  • Fixed an issue where member clusters using Microsoft Entra (managed identity) authentication were rejected on update, which had blocked member updates and version upgrades.
  • Fixed leftover mesh resources being orphaned on a member cluster after it left the mesh; these are now cleaned up.
  • Fixed member deletion being stuck in a retry loop when the underlying cluster had already been removed; already-deleted resources are now treated as a success.
  • Fixed an issue where AppNet Managed Control Plane diagnostic logs were missing from customer Log Analytics workspaces.
  • Fixed an issue where member join would retry when the cluster had a customer-fixable configuration error; it now fails fast and returns the validation error so it can be corrected.
  • Fixed an issue where failed AppLink and member operations returned a generic error instead of the specific reason; actionable failures, such as joining a cluster already connected to another AppLink, now explain what went wrong and how to resolve it.

Component updates