Script to Rename Computer without Reboot

Rename.ps1

<#
.Synopsis
   Set Computer Name (HOSTNAME) and Description without rebooting. Author M Quick  Date.24/06/2021 Ver. 20210624
.DESCRIPTION
   Script sets environment variables and other needed values to change the hostname on a Windows 10 Workstation. The 
   script also sets the 'description' of the system. The result of the function calls return boolean results. The script
   prints out HOSTNAME-DESCRIPTION-CONFIG-SUCCESSFUL if both values were set correctly. This is done so the text can be 
   captures by the AutoIT script running it and determine pass or fail (easier than getting the exit value).
.EXAMPLE
   Rename.ps1 -CN NEWHOSTNAME -DS 'The host description goes here'
.INPUTS
   -DN HOSTNAME  and -DS DESCRIPTION
.OUTPUTS
    Result :HOSTNAME-DESCRIPTION-CONFIG-FAILED
     Detail: (failure on Changing ComputerName)
   -ex. success-
    Result :HOSTNAME-DESCRIPTION-CONFIG-SUCCESSFUL
     Detail: (finished Success!)
#>

Param (
    $CN = $arg[0],
    $DS = $arg[1]
)

function RenameComputer
{   
   param($ComputerName)
     
   Remove-ItemProperty -path "HKLM:\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters" -name "Hostname"
   Remove-ItemProperty -path "HKLM:\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters" -name "NV Hostname"
   
   New-PSDrive -name HKU -PSProvider "Registry" -Root "HKEY_USERS"
   
   Set-ItemProperty -path "HKLM:\SYSTEM\CurrentControlSet\Control\Computername\Computername" -name "Computername" -value $ComputerName
   Set-ItemProperty -path "HKLM:\SYSTEM\CurrentControlSet\Control\Computername\ActiveComputername" -name "Computername" -value $ComputerName
   Set-ItemProperty -path "HKLM:\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters" -name "Hostname" -value $ComputerName
   Set-ItemProperty -path "HKLM:\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters" -name "NV Hostname" -value  $ComputerName
   Set-ItemProperty -path "HKLM:\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon" -name "AltDefaultDomainName" -value $ComputerName
   Set-ItemProperty -path "HKLM:\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon" -name "DefaultDomainName" -value $ComputerName
   Set-ItemProperty -path "HKCU:\Volatile Environment" -name "LOGONSERVER" -value $ComputerName
   [Environment]::SetEnvironmentVariable("COMPUTERNAME", "$ComputerName", "User")
   
   $CurrentName = [System.Net.Dns]::GetHostName()
   If ($CurrentName -NotMatch $ComputerName) {
        Return $false
   }
   Return $true 
}

Function SetDescription
{
    Param($adDescription)
    Get-CimInstance -ClassName Win32_OperatingSystem | Set-CimInstance -Property @{
        'Description' = $adDescription;
    }

    $CurrentDescription = (Get-WmiObject -Class Win32_OperatingSystem).Description
    If ($CurrentDescription -NotMatch $DS) {
        Return $false
    }
    return $true
}


#$CN = $CN.trim()
$CN = ($CN -replace '\s', '')
$DS = $DS.trim()
$Status = "FAILED"

$Step = '(failure on Changing ComputerName)'
$Result = RenameComputer -ComputerName $CN
if ($Result -eq $true) {
   $Step = '(failure on Changing Description)'
   $Result = SetDescription -adDescription $DS
   if ($Result -eq $true) {
        $Status = "SUCCESSFUL"
        $Step = '(finished Success!)'
   }
}

Write-Host("Result :HOSTNAME-DESCRIPTION-CONFIG-"+$Status+"`n Detail: "+$Step)