KB3146449 is another update one should avoid installing.
From its own description:
Updated Internet Explorer 11 capabilities to upgrade Windows 8.1 and Windows 7
This update adds functionality to Internet Explorer 11 on some computers that lets users learn about Windows 10 or start an upgrade to Windows 10.
Continue reading Ad for Windows 10 camouflaged as a security update, how low can one sink?
Yeah sure enough, Windows 8/8.1 and IE 10/11 has its own builtin Flash player. This highly potent combination outright refuses you to download the real Adobe Flash Player from Adobe’s website. It hasn’t occured at all to Microsoft that we, the users, might need the real Adobe Flash Player for software other than IE, say Adobe Acrobat Pro. Way to go Micro$oft! Continue reading Adobe Flash Player, MS Windows 8/8.1, and MS IE 10/11