Powershell - Loop Install of Available Software Updates (SCCM) - windows

Question

I have the below script which I am using to run on critical desktop clients to install all available updates (quarterly) that have been deployed by SCCM.
As some deployed updates only become available when other dependent updates have been installed the script is stopping before the reboot.
I ideally want it to loop and continue to install all available updates until all have installed and then proceed to automatically reboot.
Any ideas?
Add-Type -AssemblyName PresentationCore, PresentationFramework
switch (
[System.Windows.MessageBox]::Show(
'This action will download and install critical Microsoft updates and may invoke an automatic reboot. Do you want to continue?',
'WARNING',
'YesNo',
'Warning'
)
) {
'Yes'
{
Start-Process -FilePath "C:\Windows\CCM\ClientUX\scclient.exe" "softwarecenter:Page=InstallationStatus"
$installUpdateParam = #{
NameSpace = 'root/ccm/ClientSDK'
ClassName = 'CCM_SoftwareUpdatesManager'
MethodName = 'InstallUpdates'
}
$getUpdateParam = #{
NameSpace = 'root/ccm/ClientSDK'
ClassName = 'CCM_SoftwareUpdate'
Filter = 'EvaluationState < 8'
}
[ciminstance[]]$updates = Get-CimInstance #getUpdateParam
if ($updates) {
Invoke-CimMethod #installUpdateParam -Arguments #{ CCMUpdates = $updates }
while(Get-CimInstance #getUpdateParam){
Start-Sleep -Seconds 30
}
}
$rebootPending = Invoke-CimMethod -Namespace root/ccm/ClientSDK -ClassName CCM_ClientUtilities -MethodName DetermineIfRebootPending
if ($rebootPending.RebootPending){
Invoke-CimMethod -Namespace root/ccm/ClientSDK -ClassName CCM_ClientUtilities -MethodName RestartComputer
}
'No'
# Exit-PSSession
}
}

Answer 1

You may loop indefinitely to start the process and stop only when $updates is $null or empty.
while($true) {
Start-Process ...
[ciminstance[]]$updates = Get-CimInstance #getUpdateParam
if ($updates) {
Invoke-CimMethod #installUpdateParam -Arguments #{ CCMUpdates = $updates }
while(Get-CimInstance #getUpdateParam){
Start-Sleep -Seconds 30
}
}
else {
break;
}
}