It appears that Microsoft removed this registry key in Server 2016.
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\WindowsUpdate\Auto Update\Results\Install
Does anyone know of an equivalent registry key that has the last Windows Update install success date/time? Or perhaps a different method of querying this value?
I've spent hours googling, but have found nothing. Closest registry key I can find is:
HKLM\SOFTWARE\Policies\Microsoft\Windows\WindowsUpdate\AU
However, it has no key for last successful install date/time.