Hi Steve;
This was a feature of the PB Packager up to PB version 12.6 as it was designed to also deploy PB.Net based Apps / components. However, the .Net deployment feature was removed from the PB Packager in PB 2017 as PB.Net is no longer supported.
However, you can still find the .NET run-time DLL deployment MSI in your PB 2017 installation. It should be located at ... C:\Program Files (x86)\Appeon\PowerBuilder 17.0\DotNET\pbiu\BootStrapper\Packages\1-PBRuntime
HTH
Regards ... Chris
The folder specified by Chris contains indeed configuration.xml and pbruntime.msi too.
Best,
Marco