Keep Your Surface Current via Windows Update
Part of the Microsoft Surface For Dummies Cheat Sheet
Your Microsoft Surface automatically downloads waiting updates from Windows Update, but it doesn't always install them until you restart your Surface. To be on the safe side, follow these steps to download the latest updates and restart your Surface.
From any screen, slide your finger inward from the screen's right edge to fetch the Charms bar, and then tap the Settings icon.
When the Settings pane appears, tap Change PC Settings.
At the PC Settings' screen's bottom left edge, tap Windows Update.
Tap Check for Updates now, install all waiting updates, and restart your Surface, if requested by Windows Update.