This is nothing to to with my earlier post, but I have had a phone call purporting to be from Windows about a potential virus. The caller informed me that my computer was under threat and that he would 'talk me' through a quick procedure to prevent this.
I asked him the name of his company. He mumbled, I asked for their phone number and he replied "sit at your computer and just quickly answer these questions". Whereupon I hung up.
I immediately dialed 1471 but the number had been withheld.
I then went upstairs and turned my computer off at the mains for an hour.
Over cautious, maybe, maybe but this I am sure is a scam.
Apart from anything else, windows updates remotely and requires no input from users.
Don't get caught!