How to find if the local computer is in a domain?

Question

Is there an easy and fast way to find out if the local computer is joined to a domain with PowerShell?

I find lots of stuff about getting the current workgroup OR domain but no clear indications on how to know if it really is a workgroup or domain. Just want to find this out before calling some Active Directory related stuff that only gives a timeout after a long wait on workgroup computers.

The [System.DirectoryServices.ActiveDirectory.Domain]::GetCurrentDomain() method takes a long time before failing on workgroup computers and the WMI class Win32_ComputerSystem shows the name but not if it is a real domain.

Answer 1

Win32_ComputerSystem has a PartOfDomain property that indicates whether the computer is domain joined or not. There is also a workgroup property - that should be blank if the computer is on a domain.

Example:

if ((gwmi win32_computersystem).partofdomain -eq $true) {     write-host -fore green "I am domain joined!" } else {     write-host -fore red "Ooops, workgroup!" }