An Azure service that provides serverless Kubernetes, an integrated continuous integration and continuous delivery experience, and enterprise-grade security and governance.
It looks like your subscription was moved from tenant to tenant. Unfortunately, AKS clusters cannot currently be used after a tenant move operation. Moving your AKS cluster between tenants is currently unsupported.
Your options are to move the subscription back to the original tenant to try and restore tenant association or delete the cluster and recreate in the new subscription
See: AKS frequently asked questions
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Regards,
Abiola