Some users are adventurous, and seek to be the first to use new Windows 10 features via Microsoft’s Windows Insider program. Others aren’t, and just want a stable system to use on day-to-day basis.
If you’re one of the latter, don’t go clicking Windows Update’s “Check for updates” button willy-nilly, or you may unwittingly join the ranks of the Windows pioneers—even if you were simply hoping for a patch to fix a problem with your operating system.
In a blog post this week, Microsoft revealed that those users who click the “Check for updates” button (Settings > Update & Security > Windows Update) are opted in to testing new Windows features on a one-time basis, if they happen to click the button during the third and fourth week of the month. Microsoft calls those updates “C” and “D” releases, and issues them to those who are “seeking” them when they click the update button.