So, you decided to start with an Raspberry Pi. For example for a small Nagios monitoring server. This short howto will explain you how to start with Raspberry Pi.
Once you installed Exchange 2016 Cumulative Update 5 you might find out that the server is half broken now:
Abstract: This short article explains how to find out which .net Framework version is installed.
Today Microsoft released the .NET Framework 4.7. But please keep noted that its not yet supported on MS Exchange 2016, so you should block that so that it isn´t installed via Windows update.