Esegui PowerShell come Administrator

 Install-Module PSWindowsUpdate 
 Set-ExecutionPolicy RemoteSigned 
 Import-Module PSWindowsUpdate 
 Get-WUList MicrosoftUpdate 
 Get-WUInstall MicrosoftUpdate AcceptAll AutoReboot -Verbose 
 Get-WindowsUpdate -MicrosoftUpdate -KBArticleID KB4503308 -Verbose 

Esempio:

 Help Get-WUInstall -full