I got one too, they CLAIM they are from Windows and that your computer is corrupted. He asked for a "serial number" at least that what I think he said, couldn't really understand him.  Informed I wasn't near my computer, so he said he would call back and was persistent on a specific time.  Guessing it's a scam.

Just received a call from this number.  Claimed he was calling from Windows and that my computer was corrupted.  I asked him where he was calling me from and was told Manchester, UK....I live in Ontario, Canada.  I told him I thought he was full of poop and he hung up on me.

Received a call from today, I didn't answer it. I don't know anyone from the 217 exchange. I don't run windows.

Just got a call from this phone number and all they asked me was " do you speak Spanish?"
I said " no" and they hung up..... Strange..

I just received a call from this number 1-217-398-9544 and it was a payphone did not answer don't know anyone that would call me from a payphone.