---
ms.topic: include
ms.service: azure-kubernetes-fleet-manager
ms.date: 04/30/2026
author: sjwaight
ms.author: simonwaight
---

> [!IMPORTANT]
> Node image versions are only valid for 90 days from their original publish date. If the target node image version selected by an update run exceeds the 90-day window by the time a member cluster is upgraded, the upgrade for that member cluster might fail.
