I've a VM running Win 2012R2 and Exchange 2016 CU20.
I would like to upgrade to Exchange 2016 CU22.
Upgrade failed with this error : KB2999226 isn't installed on this computer and needs to be installed before Exchange Setup can begin.
But this KB is installed. I tried to uninstall the KB, reboot Windows, install the KB again, the error persists...
Any ideas would be very nice :)