Using Scripts to trigger software updates remotely from the software center

The following is the PowerShell script which will check for the windows updates (it can be Microsoft or 3rd party), and trigger the installation. Doing this action, will ignore the maintenance window ONLY (if you have any) and follow the reboot schedule as per the assignment.

$MissingUpdates = Get-WmiObject -Class CCM_SoftwareUpdate -Filter ComplianceState=0 -Namespace root\CCM\ClientSDK
$MissingUpdatesReformatted = @($MissingUpdates | ForEach-Object {if($_.ComplianceState -eq 0){[WMI]$_.__PATH}})
if ( $MissingUpdatesReformatted)
{
$InstallReturn = Invoke-WmiMethod -ComputerName $env:computername -Class CCM_SoftwareUpdatesManager -Name InstallUpdates -ArgumentList (,$MissingUpdatesReformatted) -Namespace root\ccm\clientsdk
write-host "Updates found, initiated"
}
else
{
write-host "No updates found"
}

http://eskonr.com/2021/05/using-scripts-to-trigger-software-updates-remotely-from-the-sccm-console/