OK!
I want to convert via esxi host (not a vSphere Management Site). So when I 'm trying to connect to esxi infrastructure host I get "The access to the host resource settings is restricted to the server 'xx.xx.xx.xx' that is managing the host. Use the management server as a destination". Where 'xx.xx.xx.xx' is vSphere Management Site.
I have no firewalls and run client through "Run as Administrator".