Re-register WSUS Client with Powershell

I went ahead and coded this using PowerShell. But I find that using WMI in PowerShell I think I seem to have more failures. But I did not take the time to confirm that suspicion.

$server = 'MACHINE-NAME'
 
#net stop wuauserv
$svc = Get-WmiObject Win32_Service -ComputerName $server -Filter "name='wuauserv'"
    if ($svc.started -eq $true) {
        write-host $server "stopping wuauserv"
        $svc.StopService()
    }
    if ($svc.started -eq $false) {
        write-host $server "wuauserv stopped"
    }
 
#Backup Registry
$result=([WmiClass]"\\$server\ROOT\CIMV2:Win32_Process").create("c:\windows\regedit /e c:\WSUS.REG HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\WindowsUpdate")
write-host $server "Backup Registry RESULT=" $result.returnvalue
 
#Cleanup Registry
$reg = [Microsoft.Win32.RegistryKey]::OpenRemoteBaseKey('LocalMachine', $server)
$regKey = $reg.OpenSubKey('SOFTWARE\Microsoft\Windows\CurrentVersion\WindowsUpdate', $true)
$regKey.DeleteSubKey('AccountDomainSid')
$regKey.DeleteSubKey('PingID')
$regKey.DeleteSubKey('SusClientId')
$regKey = $reg.OpenSubKey('SOFTWARE\Microsoft\Windows\CurrentVersion\WindowsUpdate\Auto Update', $true)
$regKey.DeleteSubKey('LastWaitTimeout')
$regKey.DeleteSubKey('DetectionStartTime')
$regKey.DeleteSubKey('NextDetectionTime')
$regKey.DeleteSubKey('AUState')
 
write-host $server "WSUS Reg Clean Completed"
 
#net start wuauserv
$svc = Get-WmiObject Win32_Service -ComputerName $server -Filter "name='wuauserv'"
$svc.StartService()
    if ($svc.started -eq $true) {
        write-host $server "wuauserv started"
    }
 
#RESET WUAUCLT
$result=([WmiClass]"\\$server\ROOT\CIMV2:Win32_Process").create("wuauclt /resetauthorization /detectnow")
write-host $server "wuauclt reset RESULT=" $result.returnvalue