What I I need is a reliable method of opening a website using EDGE 'InPrivate' Mode. It would have been nice to have a simple single command-line method but apparently this cannot be done.

On a system with a brand new install of Windows 10 that has been in use for only a few days (The only change being to make Chrome the default Browser) I can get the suggested "Microsoft-edge:" to work from Win+R but not from CLI so not sure how to accomplish this from a script.

I was able to get Chrome to open a specific website using Incognito Mode from a single line command but have had no luck at all using Edge. The last post I could find was on a Microsoft forum and perhaps indicates that there is no way to accomplish this.

Failing a simple method , is there any way to create a script in batch,PS or VBS that would accomplish the same thing?