Let’s go through some steps that may prove helpful in speeding up your processes in joining machines to a domain, or helping you to migrate machines to a new domain at scale. We will utilize some pretty simple PowerShell to accomplish this task. So without further ado, grab a drink, sit back, and let’s do this!
Checking Domain Membership
We need some logic to see if the machine is currently a member of a domain. That’s pretty simple with PowerShell. The code looks like this (and will return a true/false value):
(Get-WMIObject win32_computersystem).partofdomainRemoving a Machine from a Domain
This also is going to return to us a true/false value. Given that we want to put the machine on a new domain, let’s use some logic to automate removing the machine from its current domain membership.
If ( (Get-WMIObject win32_computersystem).partofdomain 
