Renaming a Domain Computer with PowerShell

Hi all,

I am trying to rename a computer with PowerShell. The script seems to work find when using a workgroup computer, but does not rename a member of a domain.

I am doing:

$ComputerInfo = Get-WmiObject -Class Win32_ComputerSystem -Authentication 6
Write-Host "This computer is a member of a domain, and a domain administrator username and password is required"
$domainUsername = Read-Host "Please enter the domain administrator username (in the form DOMAIN\username or username@domain.com"
$domainPassword = Read-Host "Please enter the domain administrator password"
Write-Host "Renaming machine to $newSrvName (member of a domain) ..."
$renameReturn = $ComputerInfo.Rename($newSrvName,$domainPassword,$domainUsername)

However, it is returning error code 1356 (I think that was it from memory) (i.e. $renameReturn = 1356) rather than zero. Renaming from Computer properities is possible with the same credentials.

I think 1356 relates to:

1355 The specified domain either does not exist or could not be contacted.

From: http://www.hiteksoftware.com/knowledge/articles/049.htm

Any help much appreciated.

Regards,

Ben