I've rebooted the PC, explorer itself runs as I have the desktop etc fine. If I type C:\ in the search bar it opens. It's just Win + E or opening File Explorer directly when I get the error

Thanks

Please help, I've just run this on 2 Windows 10 machines and now when I try to start explorer either from shortcut or Win+E I get the following error - Windows cannot find ". Make sure you typed the...