Just over nine years ago, Microsoft provided a first look at Windows 8.1. And almost to this day nine years earlier, it rolled out a preview, timed with the start of its Build conference. If you ended up upgrading and never looked back (or forward), brace yourself for nag screens imploring you once again to upgrade your operating system.

Mainstream

Source: Hot Hardware – Still Running Windows 8.1? Get Ready For Upgrade Nag Screens