don't call it. If you do, a man with a heavy accent will ask you to go to a website called Support88.com, then ask to you click one of three buttons on that site. Doing so will download software that gives the friendly foreign gentleman total control of your PC.
Let's be clear: Microsoft will NEVER call you at home to tell you that your Windows software is out of date. Anyone who phones your house out of the blue and pretends to represent Microsoft is a scammer, and you should hang up on them right away.
(833) 800-6777 is still working using 10000000000 as my phone# and I dont think they can block it. lol just keep breathing on the phone. it is really pissing them off haha
If they ask you what you see, say "Establish Support Connection", and there's 2 input boxes.
one for your first name, one for support key
scammer will give you a support key, ask you to hit "continue"
you'll then be downloading the file gotoopener.dmg