Hello Nino ( Nino_Bilic ),
thank you for your fast response.
@Rocky567 You need to run it using the files from the Exchange installation directory. Those files get updated after SU is installed.
One more question:
The Exchange Servers are belonging to / are member of our production domain, which is a child domain of our root domain.
So the Exchange installation directory with the updated setup.exe is located in the production domain.
As far as i know und as we always did so far, we have to run Prepare... inside the root domain.
But how can we do that if the updated setup.exe is in the production domain.
Just copy the Exchange installation directory?
Thanks & Greetings Roland