Azure Red Hat OpenShift cluster creation is failing with InternalServerError during provisioning.

Ashi Veerman 20 Reputation points Microsoft Employee
2026-04-08T12:06:44.75+00:00

Error details
{

    "status": "Failed",

    "error": {

        "code": "InternalServerError",

        "message": "Internal server error."

    }

}
After deployment is submitted within two minutes it fails with this error, we have sufficient cores for deploying ARO still this error is coming. I followed instructions from https://learn.microsoft.com/en-us/azure/openshift/howto-create-openshift-cluster?pivots=aro-deploy-az-cli.
Thanks,
Ashi

Azure Red Hat OpenShift
Azure Red Hat OpenShift

An Azure service that provides a flexible, self-service deployment of fully managed OpenShift clusters.

0 comments No comments

Answer accepted by question author
Anonymous
2026-04-08T12:40:17.9833333+00:00

Hello Ashi,

Thank you very much for your cooperation and for taking the time to work with us offline during the troubleshooting. We truly appreciate your patience while we coordinated with the ARO team to better understand the cause of the issue.

From the investigation, it was found that the issue is related to a subscription-level policy that is currently blocking the resource creation request. Specifically, the policy restricts Managed Identity Federated Credentials based on approved issuer types, and as a result, the request is being denied. At the moment, the issuer eastus2.oic.aro.azure.com and westus3.oic.aro.azure.com is not included in the list of allowed issuers, which is preventing the ARO cluster creation from completing successfully.

To help move forward, you may consider either using a subscription that is not governed by this policy or updating the policy to include a wildcard entry such as *.oic.aro.azure.com, if that aligns with the guidelines.

Was this answer helpful?

0 comments No comments

0 additional answers

Sort by: Oldest

Your answer

Answers can be marked as 'Accepted' by the question author and 'Recommended' by moderators, which helps users know the answer solved the author's problem.