Hello @Handian Sudianto ,
That error usually means the Azure Connected Machine Agent is trying to register under a subscription or tenant that doesn’t match your current login context.
az login,az show account,az account set --subscription "<YourSubscriptionNameOrID>",azcmagent connect --resource-group <YourResourceGroup> --tenant-id <YourTenantID> --location <AzureRegion>
Also, please ensure that your Arc agent status is showing as Connected-https://dori-uw-1.kuma-moon.com/en-us/azure/azure-arc/servers/quick-enable-hybrid-vm
If you have any further queries, do let us know.