To update your Windows 7, 8, 8.1, and 10 Operating System:
- Open Windows Update by clicking the Start button in the lower left corner. In the search box, type Update, and then, in the list of results, click Windows Update.
- Click Check for updates, and then wait while Windows looks for the latest updates for your computer.
- If you see a message telling you that important updates are available, or telling you to review important updates, click the message to view and select the important updates to install.
- In the list, click the important updates for more information. Select the check boxes for any updates that you want to install, and then click OK.
- Click Install updates.
For information on Microsoft Windows Automatic Updates, visit Microsoft's Update site.
To update your Mac OS, go to the Mac App Store and select Updates and follow the instructions. You may have to restart your computer after the updates have installed.
For information about scheduling Mac OS software updates, visit the Apple Support site.