Get security updates automatically
Turn on automatic updating in Control Panel
Swipe in from the right edge of the screen, and then tap Search. If you're using a mouse, point to the lower-right corner of the screen, and then click Search.
Type Windows Update in the search box, tap or click Settings, and then tap or click Turn automatic updating on or off.
In Windows Update, choose the settings that you want.
Open Windows Update by clicking the Start button, clicking All Programs, and then clicking Windows Update.
In the left pane, click Change settings.
Under Important updates, choose the option that you want.
Under Recommended updates, select the Give me recommended updates the same way I receive important updates check box, and then click OK. If you are prompted for an administrator password or confirmation, type the password or provide confirmation.
After you set up automatic updating, all the latest security and performance improvements will be installed on your PC quickly and reliably.
Pay attention to Windows Update warnings
When you turn on automatic updating, most updates will download and install on their own. Sometimes Windows Update will need your input during an installation. In this case, you'll see an alert in the notification area at the far right of the taskbar—be sure to click it.
Other steps you can take to help protect your computer
End of support for Windows XP
Support is ending for some versions of Windows, and security updates will no longer be available for those versions. Find out what you need to do.
Technical information about security updates
If you are an IT professional or a system administrator, or if you’d like additional information about security updates, go to Security TechCenter or read the Microsoft Security Response Center Blog.