however - I just had an idea and it seemed to work
I had previously installed Node-RED Desktop
(a packaged up version of Node-RED) on my win10 machine.
I found the folder it was installed to
and copied the node-red-desktop folder to another folder, then ran the unistaller inside the old location
Simply launching the .exe from the new location launched it fine
I need to test it out on a completely clean machine but I think it should work
Here is a zipped copy of the folder - if you have a win machine - try it out and see what happens