In message snipped-for-privacy@brightview.co.uk>, John Rumm snipped-for-privacy@nowhere.null writes
At this stage, it asks for Username and Password. Enter them and it says "Cannot Sign In. Your Apple ID must be used to setup iCloud on an iOS or OSX device before you can use iCloud for Windows." I have tested what happens if I enter the wrong password here. It says Incorrect Password as expected.
This is basically where I have got to many times, and why I gave up.
I only revisited it because I know John is trying to help.
In both the real and virtual machines' Start Menu I now have an iCloud Photos option. Clicking this brings up a Download and Upload icon in what appears to be a subfolder of This PC. I can drag and drop into either of these folders, but can't make head or tail of whether the file has gone anywhere.
I really must stop wasting any more time on this!