Dear Sony® VAIO® Customers,
Microsoft has released Windows® 8.1, a free update to Windows 8. If you're running Windows 8, we encourage you to update.
However, to avoid potential complications running Windows 8.1 on your VAIO computer, it is critical that you run VAIO Update at the proper times when installing Windows 8.1. VAIO Update will install important updates necessary to keep your computer running smoothly with Windows 8.1.
To get started, read and follow the Windows 8.1 Update Instructions.