I was trying to join ESXi host to Active Directory using PowerCli ( Get-vmhost <vmhost> | Get-VMHostAuthentication | Set-VMHostAuthentication -JoinDomain -Domain “domain.com/Servers/ESXi” -User “<username>” -Password “<password>” ) and I was getting an error:
“Active directory authentication store is not supported for VMHost <hostname>”
Tried to join it via old C client – that failed also.
AD join finally worked via VMware Host Client running on the host. VMWare Host Client can be accessed via web browser – https://<hostname>/ui/#/login.