Creating a “Hyper-V Administrators” local group through PowerShell

$myWindowsID=[System.Security.Principal.WindowsIdentity]::GetCurrent()

$myWindowsPrincipal=new-object System.Security.Principal.WindowsPrincipal($myWindowsID)

# Get the security principal for the Administrator role

$adminRole=[System.Security.Principal.WindowsBuiltInRole]::Administrator

# Check to see if we are currently running "as Administrator"

if ($myWindowsPrincipal.IsInRole($adminRole))

   {

   # We are running "as Administrator" - so change the title and background color to indicate this

   $Host.UI.RawUI.WindowTitle = $myInvocation.MyCommand.Definition + "(Elevated)"

   $Host.UI.RawUI.BackgroundColor = "DarkBlue"

   clear-host

   }

else

   {

   # We are not running "as Administrator" - so relaunch as administrator

   # Create a new process object that starts PowerShell

   $newProcess = new-object System.Diagnostics.ProcessStartInfo "PowerShell";

   # Specify the current script path and name as a parameter

   $newProcess.Arguments = $myInvocation.MyCommand.Definition;

   # Indicate that the process should be elevated

   $newProcess.Verb = "runas";

   # Start the new process

   [System.Diagnostics.Process]::Start($newProcess);

   # Exit from the current, unelevated, process

   exit

   }

# Create "Hyper-V Administrators" group

$LocalComputer = [ADSI] "WinNT://$env:computername"

$HvAdminGroup = $LocalComputer.create("Group", "Hyper-V Administrators")

$HvAdminGroup.setinfo()

# Get the SID for the newly created group

$HvAdminGroupSID = (gwmi Win32_Group | ?{$_.Name -eq "Hyper-V Administrators"}).sid

# Add current user to Hyper-V Administrators group

$fixedUserName = $myWindowsID.Name -replace "\\","/"

$HvAdminGroup.add("WinNT://$env:computername/$fixedUserName")

# Get the current AzMan store location from the registry

$AzManStoreLocation = (Get-ItemProperty -path "HKLM:\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Virtualization").StoreLocation

# Open the AzMan store

$AzManStore = new-object -ComObject "AzRoles.AzAuthorizationStore"

$AzManStore.Initialize(2, $AzManStoreLocation)

# Handle the default Hyper-V AzMan store and the SCVMM AzMan store

if (@($AzManStore.Applications | ? {$_.Name -contains "Hyper-V services"}).count -eq 1)

   {

   $HyperVAzManStore = $AzManStore.OpenApplication("Hyper-V services")

   }

elseif (@($AzManStore.Applications | ? {$_.Name -contains "Virtual Machine Manager"}).count -eq 1)

   {

   $HyperVAzManStore = $AzManStore.OpenApplication("Virtual Machine Manager")

   }

else

   {

   Write-Host "Unable to find AzMan application group."

   Write-Host -NoNewLine "Press any key to continue..."

   $null = $Host.UI.RawUI.ReadKey("NoEcho,IncludeKeyDown")

   exit

   }

# Get the administrator role from the Hyper-V service in the AzMan store

$HyperVAdministratorsRole = $HyperVAzManStore.OpenRoleAssignment("Administrator")

# Add the Hyper-V Admin group to the AzMan store

$HyperVAdministratorsRole.AddMember($HvAdminGroupSID)

$HyperVAdministratorsRole.Submit()