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AKS patch version upgrade failed

Mahantesh Hiremath 0 Reputation points
2025-09-25T13:37:27.24+00:00

I upgraded AKS patch version to 1.33.1 from the console and the console shows 1.33.1 , while on the terminal the nodes are showing up still with old version.

here is the session info which i could obtain and Can someone support with this query?

{ "shellProps": { "sessionId": "b5df9603b7a94b36b59de42e240e5bb6", "extName": "HubsExtension", "contentName": "ResourceMenuBlade" }, "error": { "message": "An unknown error occurred.", "error": { "message": "ajaxExtended call failed", "name": "AjaxError", "stack": "AjaxError: ajaxExtended call failed\n at n.t (https://portal.azure.com/Content/Dynamic/orGwOI0pWnf6.js:27:815)\n at new n (https://portal.azure.com/Content/Dynamic/Td_hDNww9KZs.js:1:46683)\n at F.reject (https://portal.azure.com/Content/Dynamic/Td_hDNww9KZs.js:1:142180)\n at Object.<anonymous> (https://portal.azure.com/Content/Dynamic/Td_hDNww9KZs.js:1:141963)\n at u (https://portal.azure.com/Content/Dynamic/orGwOI0pWnf6.js:13:26722)\n at c (https://portal.azure.com/Content/Dynamic/orGwOI0pWnf6.js:13:27024)", "extension": "Microsoft_Azure_ContainerService", "type": "MsPortalFx.Errors.AjaxError", "baseTypes": [ "MsPortalFx.Errors.AjaxError", "MsPortalFx.Errors.Error" ], "data": { "uri": "https://management.azure.com/subscriptions/53fd3d27-4fc7-4ef7-8c6c-22a1b2487200/resourceGroups/k8s-westeurope/providers/Microsoft.ContainerService/managedClusters/k8s-westeurope?api-version=2024-03-02-preview", "type": "GET", "pathAndQuery": "", "requestId": "79c6b67b-c591-4a6d-959a-afe124a4400d", "failureCause": "", "sessionId": "b5df9603b7a94b36b59de42e240e5bb6", "commandName": "Microsoft_Azure_ContainerService.", "status": 401, "statusText": "error", "duration": 379 }, "errorLevel": 1, "timestamp": 29687.10000000149, "innerErrors": [], "textStatus": "error", "errorThrown": "", "jqXHR": {} }, "code": null }}

Azure Kubernetes Service
Azure Kubernetes Service

An Azure service that provides serverless Kubernetes, an integrated continuous integration and continuous delivery experience, and enterprise-grade security and governance.

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  1. Mahantesh Hiremath 0 Reputation points
    2025-09-30T15:17:26.87+00:00

    @Nikhil Duserla Can you tell me when you be able to reach out to me on this topic ?

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  2. Mahantesh Hiremath 0 Reputation points
    2025-09-25T19:38:43.17+00:00

    We were able to upgrade directly both control plane + all node pools directly from the console using this option for other clusters. however now i wont be able to do anything from console and also the control plane node alone from console is graded out as you see.User's image

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  3. Nikhil Duserla 9,940 Reputation points Microsoft External Staff Moderator
    2025-09-25T18:39:25.6333333+00:00

    Hello Mahantesh Hiremath,

    In AKS, the control plane and node pools are upgraded separately after initiating the control plane upgrade in the console, you need to explicitly upgrade each node pool using the Azure CLI or portal to apply the patch version to the nodes.

    To resolve this, run the following command for each node pool-

    az aks nodepool upgrade \
  --resource-group <your-resource-group> \
  --cluster-name <your-cluster-name> \
  --name <node-pool-name> \
  --kubernetes-version 1.33.1

    If you have any further queries, do let us know.

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