I have just build a VM in my ESXi 6 server and when I want to power it on, it's throwing error as 'A general system error occurred: connection refused'
Please see attached screenshot.
Help is appreciated.
Hope you have access to vCenter Appliance, Try restarting this "VMware vCenter workflow manager service"
To resolve this issue, start the VMware vCenter workflow manager service.
VMware Knowledge Base
Thank you Raj that worked for me.