Rancher 2.3.1 - AKS - Kubeconfig no certificate

Hi all,

we created a AKS Cluster using Rancher 2.3.1.

The creation wsa succesfully about when we donwload the kubbeconfig file from UI, in the configuration the CA of Cluster is missing so when we tried to launch some commands using kubectl (both if use the shell UI or the shell in a server) we received this error:

Unable to connect to the server: x509: certificate signed by unknown authority

Anyone can help me?