There is an option to use a .json file for the ConfigurationData-block.

The problem is that this conversion returns a [PSCustomObject] instead of [Hashtable] which result in Start-DscConfiguration fails when it tries to convert [PSCustomObject] to [Hashtable] for the parameter ConfigurationData.

There is a solution in PowerShell 6.2 where ConvertFrom-Json has a parameter -AsHashtable. It does not help us so much. So work around this I think we need to convert the .json file to hashtable, or use a .psd1 file instead if that can be imported as a hashtable. Not looked in to any solution, just figure I submit an issue will memory is fresh. 🙂