Microsoft's latest distribution technique smells a lot like malware
Friday afternoon I started hearing about a mysterious message from
Microsoft that warned Windows Live Mail users their systems wouldn't
work "in a few weeks." They were exhorted to download and install a
patch -- there's a link to KB 3093594 -- or upgrade to Windows 10 and
use the new Universal Mail app (which is almost universally panned).
The sign-up message looks exactly like malware. The patch
crashes many systems in many different ways, with the Calendar app
taking particular credit. It's a mess, and you should avoid it.