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RequestDisallowedByPolicy error when deploying an AKS cluster

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This article discusses how to identify and resolve the RequestDisallowedByPolicy error that occurs when you try to create and deploy a Microsoft Azure Kubernetes Service (AKS) cluster.

Symptoms

When you try to deploy an AKS cluster, you receive the following error message:

Resource request failed due to RequestDisallowedByPolicy. Please see https://aka.ms/aks-requestdisallowedbypolicy for more details. The detailed error message: Code="RequestDisallowedByPolicy"

Message="Resource 'MC_clustername' was disallowed by policy.

Cause

For security or compliance, your subscription administrators might assign policies that limit how resources are deployed. For example, your subscription might have a policy that prevents creating public IP addresses, network security groups, user-defined routes, or route tables. The error message includes the specific reason why the cluster creation was blocked. Only you can manage the policies in your environment. Microsoft can't disable or bypass those policies.

Solution

To fix this issue, follow these steps:

  1. Find the policy that blocks the action. These policies are listed in the error message. The name of a policy assignment or definition is the last segment of the id string shown in the error message.

  2. If possible, change your deployment to meet the limitations of the policy, and then retry the deploy operation.

  3. Add an exception to the policy.

  4. Disable the policy.

To get details about the policy that blocked your cluster deployment operation, see RequestDisallowedByPolicy error with Azure resource policy.

Note

After fixing the policy that blocks the AKS cluster creation, run the az aks update -g MyResourceGroup -n MyManagedCluster command to change the cluster from a failed to a success state. This will reconcile the cluster and retry the last failed operation. For more information about clusters in a failed state, see Troubleshoot Azure Kubernetes Service clusters or nodes in a failed state.

More information

General troubleshooting of AKS cluster creation issues

Contact us for help

If you have questions or need help, create a support request, or ask Azure community support. You can also submit product feedback to Azure feedback community.