Usual "Microsoft Support Tech" imposter call: they want you to allow them remote access to your computer so that they can install ransomware.
Are there still people around who aren't wise to that scam? Really?
I strung him along for about 10 minutes, playing dumb, but since I run a Chromebox instead of Windows, he never got past square one! Dumbass couldn't figure out why I didn't have a "control panel"!