If you want to list all members of the local computer group IIS_IUSRS with PowerShell, use this script:
[Script]
"Set execution policy to [Unrestricted]"
Set-ExecutionPolicy Unrestricted
$iisIUSRS = [ADSI]"WinNT://L014/IIS_IUSRS,group"
"Loop members"
foreach ($member in $iisIUSRS.Invoke("Members", $null))
{
# Cast object to type DirectoryEntry
$de = New-Object System.DirectoryServices.DirectoryEntry($member)
# Determine username
$userName = $de.Name
# Show the username
"Member is $userName"
}
[Result]
PS C:\Temp> C:\Temp\Test.ps1
Set execution policy to [Unrestricted]
Loop members
Member is SQLServerReportServerUser$L001$MSRS10.MSSQLSERVER
Member is Administrator
Member is saAsaWeb