Symptom: Access to Main ("index") Page Denied for Owner's WebID When Setting Up a Solid Server on a Windows Machine

Which cmdlets exactly do you mean?

As far as I do not understand, there is one and only one (Windows) command, an npm command line client cmdlet with the parameter test and, insofar as apparent, with input from a correctly located JSON file, for (self)testing the Solid server installation as a PODS instance; for Node Solid Server (NSS) 4.2.0-rc.0 cf. this reference post, crashing with 12 info lifecycle solid-server@4.2.0-rc.0~standard: Failed to exec standard script, cf. ibidem.