Change ESXi root password using esxcli through PowerShell

In my lab I discovered a host that had a root user password something else that I usually use. I was not able to figure it out. Since the host was connected to the vCenter  I used a PowerShell script to change it. NB! Make sure the new password meets the complexity requirements.

The script is following:

$esx_hosts = Get-VMHost my_host

foreach ($esx_host in $esx_hosts) {
  $esxcli = Get-EsxCli -VMhost $esx_host -V2
  $arguments = $esxcli.system.account.set.CreateArgs()
  $arguments.id = ‘root’
  $arguments.password = ‘Password123’
  $arguments.passwordconfirmation = ‘Password123’
  $arguments

  $esxcli.system.account.set.Invoke($arguments)
}

This script can be used to change root or any other local user password on all ESXi hosts connected to vCenter.

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